OK i have sold my 84 and bought a 95 ta bone stock.just like the z was when i bought it.it was a 11.80-12.00s easy.My goal with the ta is high 10s-low11s.Need advice what i need 2 do it.Needs 2 be streetable (weekends mainly).This is what i come up with 2 opitions.Ethier stroke it 2 a 396 or 408 and spray it with a 200 shot or 355 with a turbo kit i found think its a t-70.i know this isnt the right site.But if you guys have any advice or know some1 thats been there done it.It would help.Its a lt1 and want 2 keep the fuel injecton and 4L60e

 

Ditch/sell the LT1 and instakk a carbed small block chevy, 1 piece rear seal 396 with big heads and cam with a 200 hit and you got it. Or a Lsx 408 ither carbed or EFI with a 200 hit. Just my opinion, the LT1 is not worth your time when you have a SBC that makes the same power for cheaper or a GEN III LSX that makes a tiny bit more.

 

imo, a sbc will NOT make more power than an LT1 for cheaper. sbc's will have lower compression and worse heads. LT1's are just a sbc with nicer heads, compression, roller cam, and good fuel injected intake stock.
my stock shortblock LT1 almost went 9's with a 135 shot. it should go 9's with the new heads and the same 135 shot.
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my advise is to put a cam in it, nitrous kit, fuel pump, tune, and spend the rest on the chassis setup if your just looking for high 10's.

 

Not being a *** but who the hell was talking about stock? Not me, when the aftermarket is involved, the SBC will make more power cheaper. Other than that, the LTx is the middle child, nothing more and not worth spending the cash on if you want maximum power. But as i said, thats just me.

 

well, i was basing my earlier post on 408's goals. and what im trying to get at, is why build a motor to go low 11's/high 10's? wont have to build an LT1 to get there....
i dont think a 350 out of a '76 truck will get it done without rods/pistons/heads/intake/carb. or a big fogger for one pass. lol

 

Yea, i understand, i am speaking of a full build. I had my LT1 crap out and it had only a few bolt ons, they are all different. I have seen a bone stock long block 350 from a 76 malibu take several hitd from a 325 shot of bottle, not bad at all for a old smog motor, a 425 shot finally blew a ring land on 2 slugs, so no matter what year chevy you cannot under estimate. Personally, i will not use a block made before 87 due to me loving factory roller blocks and 1 piecer rear mains.

 

Dude thats wicked your running 10s on a stock bottem end and stock aluminan heads?Is ita 6speed or auto? what stall?
Heres the deal,I always had a hard time getting the 84 inspected were i live they do a visal cheak for the smog BS p.pump cat egr all that good stuff.And the cops are real dicks around here lol.So i sold it and got the TA.So the gen1 sbc and carb are not gna happen.I wanted somthing fuel injected and "streetable"that i could drive .The camaro realy didnt like the street haha.So thats were im gettn at.
The gen 1 and the gen 2,stock the gen 2 will kick the gen1 *** every day of the week.The again with both of them built?My old 84 z28 was built eagle rotator dart 215s 525 lift cam.The only thing on the motor that was gm was the block and was 408ci.Built 700r4,4.10s.It was fast but wasnt faster than 11.50s.Never ran it but buddy has a notch stang the runs 11.80s on spray and beat him by 3 car if that!

 

i did a little bit of work on my heads so i cant say they are stock. but, i cant say i knew what i was doing with the porting so who knows how good they are? lol
it went 6.50's with a xe230/236 cam. now im running a 236/248 nitrous cam. same 135 shot. i am putting a set of Advanced induction heads on it in the coming weeks, and will be bumping the shot up to 200.
th400 trans, 3600ish converter, and 9" with 3.89 gears. 28" hoosiers.

if i was to build another LT1 car this is exactly what i would do all over again. spend all your money on the suspension and the rest of the car.

 

money on the chassis first, I know a guy who runs like 8.4 in the eighth stock engine, with the exception of hooker super comp headers and 4.10 gears in the rear. All the money was on the suspension. got UMI stuff and it runs pretty well. I know that's fairly much slower than your goal, but around here most LT1 guys run like 9,2 so thats .8 in suspension alone, and then you don't have to worry about the power.
i'd do the 236/248 nitrous cam
3500 stall lockup converter
good tune
headers
as much suspension as you can

 

Ya my 84 had new springs and shocks,boxed lowers,poly torque arm mount,other than that it was all stock and it spun till the end of 2d gear haha

 

I actually disagree, when my old 355 blower motor took out a piston, I threw in a bone stock 70s 350 short block that came right out of fathers junked truck, but still ran very strong, placed in the same cam, intake, darts 200cc heads.. ect. and a 150 plate, the car got me threw the rest of the year running 10.8-10.7s.. Probably 30 or more passes and driving to track.. surprised the hell outa me, was just playing to see how long it would last. Then I put in my 87 ta's short block with those same heads, cam and my blow through charger with 9 psi, 10:1 compression and an N/A cam with 106 lsa. Had a nast bog due to no engine vacuum, needed 50cc accelerators and larger squiters, but trapped 130! only hitting 10.9s though. Played with that on the street till placing in the BBC, that motor is now going actually in a 95 firebird..

I like the 396 idea though to answer the question, conservative cam, afr heads and 150 should easily get you 10s

 

so what are you disagreeing about? lol (you had dart 200cc heads on it)

 

You said that an old sbc would not last more than a pass without internal mods... I lasted 30 and still did not brake it!
Not really disagreeing with the logic, I have always been one to stretch the limits and have been lucky with.. Like running my 10 bolt for years 60ft'ing low 1.40s and high 1.30s on spray And still kicking behind a 6spd now... Figured I would throw the limits to a stock used shortblock, pulling gear at 6500 FOR 10 Sec ET's and it lived to and still is.. Though it has since been sitting in a moist garage, sure that has killed it..

 

well, its not so much the shortblock isnt strong enough, its just that a stock sbc has low compression, crappy heads, and most have a not-so-good intake. so youll typically need to change some stuff around to make one work. such as pistons to raise the compression, and/or aftermarket heads. good heads on a stock shortblock makes a great blower motor, provided you keep it from detonating and shattering the cast pistons.

i am running a stock LT1 shortblock in my car right now, which is pretty much the same thing as a stock sbc shortblock. hope to be in the 9's here in another month or so.

 

Well most truck blocks came with 76cc heads, so with a head swap you'll get the compression, but agree easily that long block for long block LT1 is better choice.. But if gonna engine swap, I would go LSX now, no comparrison with either 23° set-ups. Actully thinking of pulling my long tried and trued 400 in sig and starting over with LS..

 

LT4 head,cam,intake kit. Good rear and suspension and nitrous. Ive seen it work.

 

LT4 heads are good but that dinky "hoy" cam is not enough to get SOLID depth into the 10s on gas.

 

LSx is probably where i will go to in another year or 2 in my car as well. but you know, i think the LT1 factory head castings are actually capable of making more power ported vs. ported LS1 factory castings...
any of you guys seen an LS1 car make over 500rwhp with ported factory castings and ported stock intake? stock displacement... (i know of an LT1 car that did)

 

You are correct, the 5.3 liter casting make more power than the LS1 head, pretty fu8nny considering it is a truck head that is better. I will go with the LSx conversion eventually, i will be using the 5.3 short blocks, 6.0 also, they are so damn cheap that once i have the car set up it is all down hill from there, blow one up and pick up another short block for 4-600$.

 

get rid of the opti spark , it is ****

 

my 383 with traction and abit more gear SHOULD go 11.30's at near 120 on a good air day. has done 11.47 at 118.5 on a 1.55 60 foot when it could touch high 1.4x's i think

very rich 150 shot went 10.90's with traction problems, 1.65 60 foot. I wasnt spraying off the line but just before the 60 foot mark i think. trapped 125. Once i lean it out and keep bottle pressure up, i should touch 128mph traps and mid high 10's

extremely streetable


For an LT1, i'd build a 383 all forged and get one of AI's top packages. hell even AFR 210's with nice cam will be streetable and make 425whp or more and run low 11's all day long. Add 100-150 shot for high 10's

 

There are quite a few actually. My brother in laws car, with stock intake unported, reverse split cam 236/234 made over 400 at wheels unported heads, factory throttle body, stock compression.. There are many strong 23° engines out there, but really you compare apples and oranges with the 2.
Ported LS1 casting are flowing 300's+

We are lucky to pull 280 cfm out of LT1 or many other 23° heads, ls1 casting flow 270s stock! My cnc ported AFR's flow 280.. And they can do so and still keep great port velocity! Not really a comparison..
Not knocking your or any other LT1's or 23° head combo's. but its hard to compete with that. Look at any of those LT1 vs LS1 shoot outs in GMHT and such, never even comparable. Don't get me wrong, I love my combo and its a huge performer in my opinion with little invested, driving my car to 10.8 on footbrake, pump gas and very streetable, I drove it 300 miles to Maryland, sprayed it with a 125 shot to 10.0s, also on pump gas and drove it home same day. With more gas, I would have been 9s easy.. But I get angry seing LSX cars get it so much easier than we can!
Although, I can say, many of them perform on the dyno awesome, but don't see many pulling the times I do.

 

Well Ive seen it do 10.50's-10.60s all day long. The guy bought the car with the swap already done and he added the nitrous. Either way lt1 is capable with out going 383 or what not.

 

500+rwhp LT1 with stock head castings....
http://videos.streetfire.net/video/9...tion_83098.htm

later, he wound up making 505rwhp. it runs on pump gas, and its a street car.
im looking for a 500+rwhp LS1 car with stock head castings now...

 

i've seen a few 500whp LT1's using solid roller. I havent seen any combos in the lsx world using solid rollers they tend to stick with hydraulic rollers

i THINK the cam only record was 450whp thru stock castings. I'd have to double check but a ported lsx head 346 should pull 500whp with soild roller

 

Ok, you win!
LT1 is a far greater engine than LS1!
Very impressive car! Not argueing that.. Just saying LS1's flow 270 stock, its hard to mess with that.. Here are some impressive cam only LS1's
http://ls1tech.com/forums/showthread...ht=cam+fastest

 

ah, im not trying to win or anything like that... i put an LS1 in my '93 z28, and put that LT1 into my GTA.
im really not biased, although it probably sounds like i am. lol