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NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

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Old 08-29-2008, 10:09 PM
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NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Me and my buddy are to rice burners that went to the dark side. I wanted something old school so I got a 1986 Iroc (orig 305 5spd) with a 96 (one of the 300hp stock) LT1 and 4l60e (85k) tranny in it. It's got the ram air and chips. All in all it's pretty quick, chirps 2nd with an auto. My buddy got his 98 gt 5spd (60k) stock same day. It's only been a couple days so we havn't got the chance to race ((too worried about gas)). My ? is what kind of rwhp can I expect and who would win? Also what is my car worth (roughly) considdering it needs paint. we Will be racing sometime soon so will let know. BTW my names Chris .
----------
Oh and my iroc also has long tube headers, no cats, and a flowmaster. Sounds perfect.

Last edited by 4sythe_86IrocLt; 08-29-2008 at 10:12 PM. Reason: Automerged Doublepost
Old 08-29-2008, 10:26 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

'

Last edited by 4sythe_86IrocLt; 08-29-2008 at 10:27 PM. Reason: mess up
Old 08-30-2008, 08:57 AM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

youll destroy him those stangs are poop. from what i hear my 305 could beat one(even tho i doubt thats true)
Old 08-30-2008, 09:30 AM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

285rwhp and it should put a few buslengths on a 98gt.
Old 08-30-2008, 12:01 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

yeah you'll CRUSH him, i have about 305rwhp, and my sister has a 98 gt auto, not even close, i can not launch and granny shift and still have 8 car lengths or so, those 98's are VERY slow
Old 08-30-2008, 02:41 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Stock non ram air auto LT1s put down 230-240whp. With ram air and a chip you should be around 250-260whp.

When my car was stock, auto/non ram air, Mustang GTs weren't much threat. I raced a 2006 5spd and we were dead even all the way to 95mph.

Have fun with the car. Post up some pics.
Old 08-30-2008, 04:18 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

You don't have a chip, it's a PCM so it's flashed with different settings.

Anyway, unless you're a complete 'tard when it comes to racing you're going to stomp him so bad it's not even funny.
Old 08-30-2008, 08:02 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by BigWhiteGTP
Stock non ram air auto LT1s put down 230-240whp. With ram air and a chip you should be around 250-260whp.

When my car was stock, auto/non ram air, Mustang GTs weren't much threat. I raced a 2006 5spd and we were dead even all the way to 95mph.

Have fun with the car. Post up some pics.
hes got longtubes, too.
my stock '93 with chip, cai, and flowmaster put down 265rwhp.
Old 08-31-2008, 07:55 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by DIGGLER
hes got longtubes, too.
my stock '93 with chip, cai, and flowmaster put down 265rwhp.
I remember the drive home after installing my LTs, it was awesome. Night and day. So put on another 20hp. So 270-280hp. Diggler was your car a 6spd or auto?
Old 08-31-2008, 08:31 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by BigWhiteGTP
I remember the drive home after installing my LTs, it was awesome. Night and day. So put on another 20hp. So 270-280hp. Diggler was your car a 6spd or auto?

Stock auto LT1's made 275 not 230-240 (no lT1 made less than 260 stock, i can promise you that)... if they did why would they replace the L98? And your starting crank at 275ish. you should be pushin over 300hp in the lightest Camaro gen, the third gens!!!
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Originally Posted by BigWhiteGTP
Stock non ram air auto LT1s put down 230-240whp. With ram air and a chip you should be around 250-260whp.

When my car was stock, auto/non ram air, Mustang GTs weren't much threat. I raced a 2006 5spd and we were dead even all the way to 95mph.

Have fun with the car. Post up some pics.

and just to let you know i'm pretty sure there's no such thing as a STOCK ram air Lt1, I have NEVER seen one, on a 98+ yes but 97 down no. Correct me if i'm wrong but i have never seen a stock ram air LT1....

Last edited by v10viper04; 08-31-2008 at 08:35 PM. Reason: Automerged Doublepost
Old 09-01-2008, 10:31 AM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by v10viper04
Stock auto LT1's made 275 not 230-240 (no lT1 made less than 260 stock, i can promise you that)... if they did why would they replace the L98? And your starting crank at 275ish. you should be pushin over 300hp in the lightest Camaro gen, the third gens!!!
----------



and just to let you know i'm pretty sure there's no such thing as a STOCK ram air Lt1, I have NEVER seen one, on a 98+ yes but 97 down no. Correct me if i'm wrong but i have never seen a stock ram air LT1....


the 230-240 number is RWHP, after drivetrain loss. and how does weight affect hp?
The LT1 ss's had ram air factory.
Old 09-01-2008, 11:43 AM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by BigWhiteGTP
I remember the drive home after installing my LTs, it was awesome. Night and day. So put on another 20hp. So 270-280hp. Diggler was your car a 6spd or auto?
my car was a 6 speed with 2.73's stock. changed them up to 3.42's shortly after i got the car.
later on, i ported the heads and did a cam swap. and then put an LS1 in it. the LT1 now resides in my gta, and the camaro is a weekend cruiser.

Originally Posted by v10viper04
Stock auto LT1's made 275 not 230-240 (no lT1 made less than 260 stock, i can promise you that)... if they did why would they replace the L98? And your starting crank at 275ish. you should be pushin over 300hp in the lightest Camaro gen, the third gens!!!
your going to have a hard time finding a stock LT1 putting 275 to the ground. most likely wont find one.
and weight has nothing to do with power....


Originally Posted by v10viper04
and just to let you know i'm pretty sure there's no such thing as a STOCK ram air Lt1, I have NEVER seen one, on a 98+ yes but 97 down no. Correct me if i'm wrong but i have never seen a stock ram air LT1....
there was ram-air trans ams as well as ss camaros that came stock with ram air. thousands and thousands of them were made.

Last edited by DIGGLER; 09-01-2008 at 11:50 AM. Reason: Automerged Doublepost
Old 09-01-2008, 01:22 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by DIGGLER
my car was a 6 speed with 2.73's stock. changed them up to 3.42's shortly after i got the car.
later on, i ported the heads and did a cam swap. and then put an LS1 in it. the LT1 now resides in my gta, and the camaro is a weekend cruiser.


your going to have a hard time finding a stock LT1 putting 275 to the ground. most likely wont find one.
and weight has nothing to do with power....



there was ram-air trans ams as well as ss camaros that came stock with ram air. thousands and thousands of them were made.
Did you also see that i wrote 98+? i know they made those! I've never seen a stock ram air LT1... also i DID state that i said they were making 275 at the crank, i didn't say to the ground and that other kid didn't specify either... and i said everything WAS AT THE CRANK! read a little more. also waht you run in the 1/4 with your LS1 third gen camaro?
Old 09-01-2008, 03:04 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by v10viper04
Did you also see that i wrote 98+? i know they made those! I've never seen a stock ram air LT1... also i DID state that i said they were making 275 at the crank, i didn't say to the ground and that other kid didn't specify either... and i said everything WAS AT THE CRANK! read a little more. also waht you run in the 1/4 with your LS1 third gen camaro?
they made thousands of LT1 ws6 and ss cars with ram air stock. '96-97.
they actually made more than 275 crank. 275 was just the factory rating.

the LS1 is now in my '93 camaro. it went 7.43 in the 1/8, never ran the 1/4.
the LT1 is now in my thirdgen gta. it went 10.14@131 in the 1/4.
Old 09-01-2008, 04:55 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by DIGGLER
they made thousands of LT1 ws6 and ss cars with ram air stock. '96-97.
they actually made more than 275 crank. 275 was just the factory rating.

the LS1 is now in my '93 camaro. it went 7.43 in the 1/8, never ran the 1/4.
the LT1 is now in my thirdgen gta. it went 10.14@131 in the 1/4.
Ok well i never knew that, i knew they have 97' SS's but i didn't know they had a stock ram air one. they rare?
Old 09-01-2008, 05:08 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by v10viper04
Ok well i never knew that, i knew they have 97' SS's but i didn't know they had a stock ram air one. they rare?
Since when is a SS not stock?
Old 09-01-2008, 05:39 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by fly89gta
Since when is a SS not stock?

wow read!! I mean i know that there ARE 1997' SS's!! and i didn't know that there were STOCK(FROM THE FACTORY) FIREBIRDS WITH RAM AIR from 1998 and down!
Old 09-01-2008, 06:26 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by v10viper04
wow read!! I mean i know that there ARE 1997' SS's!! and i didn't know that there were STOCK(FROM THE FACTORY) FIREBIRDS WITH RAM AIR from 1998 and down!
Don't get snippy with me, go read the post I quoted again...it certainly makes it sound like you were also talking about the SS's in your "stock" comment. Don't forget about '96 SS's too
Old 09-01-2008, 07:32 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by fly89gta
Don't get snippy with me, go read the post I quoted again...it certainly makes it sound like you were also talking about the SS's in your "stock" comment. Don't forget about '96 SS's too

basically what i meant, started the SS's with the later Lt1's and you must have just read it wrong idk cause it makes sense to me, but idk maybe its b/c i know what i'm trying to say. whatever who cares. lol
Old 09-01-2008, 08:29 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

As long as you know what you meant...or something...
Old 09-01-2008, 08:52 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by fly89gta
As long as you know what you meant...or something...

What can i say, i'm a college student! hahahaha
Old 09-02-2008, 06:48 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

So are you clear now on Ram Air LT1s now V10Viper04? HAHA!! Jesus.
Old 09-03-2008, 08:49 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Thanks guys, here's some picks... granted its not much to at now but give me a min.. The guy I bought it from told me the car that he got it out of was one of the rare 300hp stock camaros. Possible?? It's got a K&N so I don't think it was the stock ram or they might have just changed the filter. Take a look and let me know what you guys think its worth. J/W if i got a good deal or not??NewB/ 86 iroc LT1 vs 98 mustang gt 5spd-img_1704.jpg
Old 09-03-2008, 10:34 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

ifs it rare is not an LS1 or LT1 which rules those out and no L98 ever made 300hp stock.... so idk what bs he's feeding you.... no 300hp camaro engine was "rare" they only made 300+ from 98' and up and the LS1's were mass produced...
Old 09-04-2008, 03:06 AM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

I remember a friend of mine had a 1997 LT1 WS6 Trans Am, it had a ram air setup and even said "Ram Air" on the hood. The Dealer he bought it from said the 97 made more power than the 96's and he had a HECK of a time finding parts for that car, alot of stuff was specific to 97. As for the 98 Mustang, yes a 305 TPI car will beat one I've seen it happen a few times. Those cars had alot of bottlenecks from the factory and it takes some serious work to iron them all out.
Old 09-04-2008, 08:12 AM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by v10viper04
they only made 300+ from 98' and up and the LS1's were mass produced...


All About The 1996 Camaro

After a 24 year absence the Camaro SS returns as a limited production car built by SLP under contract to GM. Rated at 305 hp (315 hp w/optional exhaust), compared to 285 hp of the Z28.

RPO R7T (SS Package) was available through dealers, but was a non-Chevy modification by SLP Engineering. It included 305hp engine, special hood with functional scoop and forced induction, restyled decklid spoiler, revised suspension (coupes), 17x9" Corvette-style ZR-1 wheels with P275-40-ZR17 tires (coupes), and special badging. Other items available separately. Limited to White, Polo Green, Teal, Black, and Red.

It weighed in at 3,565 lbs. which was not exactly a lightweight, it did however manage to come out with a 0-60 mph acceleration of 5.3 seconds. It could also handle the 1/4 mile in 13.8 seconds at 101.4 mph.



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Old 09-04-2008, 08:26 AM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Found this for the Mustang

Ford Mustang GT 1998
225hp 290tq
0-60 6.4sec
1/4 mile 15.1sec
Old 09-04-2008, 11:56 AM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

There are 5 hp levels for the LT1.

Fbody had 3, 93-95 was rated at 275hp. In 1996, it went up to 285hp due to the dual cats. And also in 1996, the ram air cars came out and power went up to 305hp. The LT1 vettes were always rated at 300hp. And the Impalla SS/Caprice and 9C1 cop cars were rated at 260hp.

There were actual differences in the motors, the vettes had 4 bolt mains, and slightly better stock exhaust, and the LT1 in the caprices had iron heads, slightly lower compression, and a more torquey cam profile to move it's 4000lb car.

The 330hp LT4 came out in the 1996 Corvette Grand Sports and was put in a few Firehawks (26 or so actually) and Camaro SS.
Old 09-04-2008, 08:32 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

and as far as tranny. The 4l60 is a lot better than most autos wrong/right?? Also is it worth doing the swap to the t56?? Thanks for your help and opinions guys.
Old 09-04-2008, 08:41 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by 4sythe_86IrocLt
and as far as tranny. The 4l60 is a lot better than most autos wrong/right??
It's really nothing more than a computer controlled fancy 700r4...so no, it's not that great lol. It shares the same flaws as the 700.
Old 09-05-2008, 01:11 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by fly89gta
It's really nothing more than a computer controlled fancy 700r4...so no, it's not that great lol. It shares the same flaws as the 700.
A nice trans-go shift kit will fix that right up.

I loved my 700r4 after I did the transgo kit, boost valve, and vette servo.
Old 09-06-2008, 12:25 AM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by fly89gta
It's really nothing more than a computer controlled fancy 700r4...so no, it's not that great lol. It shares the same flaws as the 700.
Actually the 4l60 is the exact same thing as a 700r4. The 4l60E had the computer.
Old 09-06-2008, 07:57 AM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by z28z34man
Actually the 4l60 is the exact same thing as a 700r4. The 4l60E had the computer.
I thought he said 4L60E since he had a LT1.

Regardless, the 4L60 and "e" internally are pretty much 700r4's..which means they suck lol
Old 09-06-2008, 11:00 AM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by fly89gta
I thought he said 4L60E since he had a LT1.

Regardless, the 4L60 and "e" internally are pretty much 700r4's..which means they suck lol
Not necessarily, The 700r4 are not bad trannies at all, if you want to say something sucks bring up the T-5. haha the 700r4's last A LOT longer than the T-5's AND last alot longer than Dodge Auto's of the 90's hahaha. on the other hand Dodge 5 spds are pretty strong, my friend has a 95' Ram, 5.2 5 spd, 210,000 (beats on it HARD) engine+ Tranny still doing good. I'm just waiting for the day when he dumps it and all he sees afterwords is his tranny on the pavement under him! HAHAHA

But back on topic the 700's arn't bad trannies until you get higher than 350-400hp then you gotta start worrying, but do some upgrades to it and it'll hold 500hp easy.
Old 09-06-2008, 11:05 AM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

I've owned now 5 cars with a 700r4/4L60E...in stock form they're junk. Like I said, once you start making some real power they don't like it.
Old 09-06-2008, 11:27 AM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by fly89gta
I've owned now 5 cars with a 700r4/4L60E...in stock form they're junk. Like I said, once you start making some real power they don't like it.

well like i said the are FINE until around 350hp give or take some but anymore than that and the vehicle starts turning into a strip car only anyways, or a weekend crusier, so the tranny should be upgraded anyways. the Stock 700r4 is not bad for how many there are and how cheap you can get them.
Old 09-08-2008, 10:18 AM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

To the original poster, can you post pictures of the engine compartment? It sounds like the seller may have been talking the car up a bit and it'd be good to atleast confirm that the car really had an LT1 swap.
Old 09-08-2008, 11:10 AM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by v10viper04
well like i said the are FINE until around 350hp give or take some but anymore than that and the vehicle starts turning into a strip car only anyways, or a weekend crusier, so the tranny should be upgraded anyways. the Stock 700r4 is not bad for how many there are and how cheap you can get them.
You call 350hp a street/strip car? Your expectations are really low. What about all those street driven LS1s mid 20s for milage, and still putting over 500hp out at the crank?

Its true that a 700r4 with miles on it is not going to like a 350hp engine, however add a shift kit, trans cooler, and it will last a long time to come. Heat is what kills these transmissions. The stock cooler in the radiator isn't good enough, and the stock valve body doesn't help with its butter smooth shifts.

A trans cooler and shift kit help the 700r4 will easily handle a L98 for a long time to come without issues.

I don't know how much power my engine was making, however it would do 0-60 in about 5 seconds flat. Which I rebuilt myself with a friend, took a few tries but we got it right in the end. All I had was a stock rebuild with transgo shift kit, .500 tv boost valve, and vette servo. Had a stock torque converter as well. The trans had no trouble handling it.
Old 09-08-2008, 12:18 PM
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Re: NewB/ 86 iroc LT1 vs 98 mustang gt 5spd

Originally Posted by Thirdgen89GTA
You call 350hp a street/strip car? Your expectations are really low. What about all those street driven LS1s mid 20s for milage, and still putting over 500hp out at the crank?

Its true that a 700r4 with miles on it is not going to like a 350hp engine, however add a shift kit, trans cooler, and it will last a long time to come. Heat is what kills these transmissions. The stock cooler in the radiator isn't good enough, and the stock valve body doesn't help with its butter smooth shifts.

A trans cooler and shift kit help the 700r4 will easily handle a L98 for a long time to come without issues.

I don't know how much power my engine was making, however it would do 0-60 in about 5 seconds flat. Which I rebuilt myself with a friend, took a few tries but we got it right in the end. All I had was a stock rebuild with transgo shift kit, .500 tv boost valve, and vette servo. Had a stock torque converter as well. The trans had no trouble handling it.

I agree with you, thats one reason i added the extra cooler for mine too, also i have a shift kit but its not in yet, i want a shop to do it cause i hear of ppl ruining their trannies trying to install the kit. (TransGO shift kit is what i have.) For every vehicle i have ever owned/driven (except an 04' silverado) has been under 200hp or just over. so 350 is A LOT to me. and 350-400hp on a carbed motor isn't gonna get **** for milage, LS1's are a different story, they are A LOT i repeat A LOT more streetable if setup right.
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