TPI go fast tips and tricks?
#151
Re: TPI go fast tips and tricks?
Originally Posted by Black00SS
I had an uncle, who's buddy was clicking off 10.69s at 476 in a stock Berlinetta. Only mods were the air cleaner lid was flipped upside down.
- Rob
#152
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Car: 1992 Trans Am
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPI go fast tips and tricks?
Dang it, you are right. But I KNEW there would be verification witnesses!!!! It was out at "P-Diddy industries" drag strip.
#153
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: TPI go fast tips and tricks?
#155
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Car: 89 Firebird
Engine: 355 TBI
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Axle/Gears: 10 Bolt.Posi-3.73s
Re: TPI go fast tips and tricks?
My uncles nephews IROC GTA had the copcar Corvette motor with a superchip and ran 10s
#156
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Car: 1992 Trans Am
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPI go fast tips and tricks?
I remember I couldn't get mine out of the 17s until I de-burred the y-pipe. Once I smoothed that out, 10.89s at 146 like clockwork.
Of course, this was at "Happy Gilmore" raceway, where G92s run 12.89s, with the coil unplugged, on 2 flats.
Had lots of buddies win the Vince Lombardi trophy up at "Sharon Peters" dragway as well with G92 5 speeds.
#157
Re: TPI go fast tips and tricks?
We used to ice our TPI plenums at the track before runs and I doubt it helped any. We would gut the filter boxes, delete cats, run aftermarket chips. My 305 auto ran a best of 14.76 which I thought wasn't bad for a 305 with 2.73 gears. It would barely shift into 3rd as I crossed finish line. Lol. I love the TPI systems on these cars they look so good.
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Car: 1988 IROC Z Convertible
Engine: 305 TPI (LB9)
Transmission: 700 R4
Axle/Gears: G80 GU2
Re: TPI go fast tips and tricks?
A roll cage is more weight.. that’s a no-no..
you ever turn a gutted IROC into a remote controlled car?!
Get rid of the driver weight and watch that TPI do its thing!
you ever turn a gutted IROC into a remote controlled car?!
Get rid of the driver weight and watch that TPI do its thing!
#161
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Re: TPI go fast tips and tricks?
Been on vacation and away... this has been a fun read.
What is so magical about SLP's 1-3/4" headers versus the rest?
Why do some people after all these years not understand torque multiplication through gears?
I guess that is why some get paid to use their knowledge and others type away at they keyboards. Remember folks, Carbs make more power
What is so magical about SLP's 1-3/4" headers versus the rest?
Why do some people after all these years not understand torque multiplication through gears?
I guess that is why some get paid to use their knowledge and others type away at they keyboards. Remember folks, Carbs make more power
#162
Re: TPI go fast tips and tricks?
Originally Posted by KyleF
Why do some people after all these years not understand torque multiplication through gears?
- Rob
#163
Senior Member
Re: TPI go fast tips and tricks?
Simple facts... less parasitic loss in a manual of this era. Better Gear multiplication, and I said nothing in those statements about being faster in a 1/4 mile or 0-60, 0-100 or anything.
#165
Re: TPI go fast tips and tricks?
Originally Posted by KyleF
Nice... will remember this. And that is not true. The G92 L98 car was quicker.
Simple facts... less parasitic loss in a manual of this era. Better Gear multiplication, and I said nothing in those statements about being faster in a 1/4 mile or 0-60, 0-100 or anything.
Simple facts... less parasitic loss in a manual of this era. Better Gear multiplication, and I said nothing in those statements about being faster in a 1/4 mile or 0-60, 0-100 or anything.
- Rob
Last edited by Street Lethal; 07-30-2018 at 04:47 PM.
#166
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Car: 1990 G92 IROC Z Miniram
Engine: 388cu 6.4 Liters
Transmission: G-Force T5
Axle/Gears: 3.73 Gears
Re: TPI go fast tips and tricks?
SLP 1 3/4 Headers are the only large tube headers that were on the market in that era. The construction of the headers had the best performance exhaust flow than all other shorty headers. They made overall more power. They were very expensive $650 while all others were around $400. I bought mine for $450 when the price came down from SummitRacing in 1999. If you look at my picture of my headers I posted above, they are modified with 2 3/4 ball-n-socket flange. Stock s 2 1/4in. Dyno Dons Headers are 2 1/2in but he will put 3in flange apron request at no additional cost but you will need to have a custom 3in piping from headers back. So in short, I have a lot more smoother exhaust flow. None of my pipes were never in a bender. The bender restricts exhaust flow in the bends. Track proven!
#167
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Car: 1992 Trans Am
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPI go fast tips and tricks?
The answer is that we seen it on the Dyno. We seen what these cars can do. For instance, we dynoed an 89 GTA TA with just Dyno Don Headers(which are 1 3/4in tubes), dual 2 1/2in cats and Magnaflow 3in cat -back. Before the tune it made 241whp, after tune it made 251whp. The owner of the car is ItsMikey on TGO. The fact is we Dyno and we test.
#169
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Re: TPI go fast tips and tricks?
The answer is that we seen it on the Dyno. We seen what these cars can do. For instance, we dynoed an 89 GTA TA with just Dyno Don Headers(which are 1 3/4in tubes), dual 2 1/2in cats and Magnaflow 3in cat -back. Before the tune it made 241whp, after tune it made 251whp. The owner of the car is ItsMikey on TGO. The fact is we Dyno and we test.
. Track proven!
#171
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#172
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Re: TPI go fast tips and tricks?
You didn't have to say anything specific, the statement about the overall affect of torque multiplication somehow being the gospel truth did, This is one of the reasons I tend to stay away from these arguments, because they are parroted over and over again. Gear change whether trans of rear, tire size, stall speed, shift points, everything has a cause and effect. There is a reason why 1/4 mile calculators only really factor weight and horsepower to determine an approximate et and trap speed without getting into gearing, the assumption is that they are already where they need to be. A 305 with a five speed, an L98 from an F-Body without a Corvette servo, an L98 from a Y-Body with a Corvette servo, you see they are all balanced to meet the GM objective. To argue about them and compare is a waste of time. By the way you also inferred carbs as being detrimental, you didn't say it, you implied it. Carbs w/power-glides still hold their own, and yes they may not make any more power over fuel injection.... but they certainly don't make any less..
- Rob
- Rob
A LB9 G92 car is not quicker or faster than an L98 G92 car though.
Dynos take engine RPM and Drum (Wheel) RPM to factor out gearing. Although it has been proven a lower gear (Higher numerically) will actually increase parasitic loss. So, on a dyno going from a 2.73 to a 3.73 will show small net decrease in WHP. However, you will have a faster car after the change due to mechanical advantage,
Not sure what argument you have, I hope it's not that the LB9 5-speed is faster than an L98. I also hope your not in the camp that an L98 is running with an LS1.
#173
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Car: 1990 G92 IROC Z Miniram
Engine: 388cu 6.4 Liters
Transmission: G-Force T5
Axle/Gears: 3.73 Gears
Re: TPI go fast tips and tricks?
Well considering that stock 89 GTA L98 is 200-205whp, then with the exhaust system it has on it now the whp is up to 251whp is a big difference. A stock LT1 with 275-285fwhp is about 230-240whp runs mid 13,s@ 103-105mph
#174
Re: TPI go fast tips and tricks?
250 whp out of headers , exhaust and a tune is pretty impressive !! ignore the kyle guy , he doesnt seems very bright .. 10 hp gain , lol ..
#175
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Car: 89 Firebird
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Re: TPI go fast tips and tricks?
That's what I said WHP. Seems like he loves to argue but I wont. Dang 250 WHP is LS1 territory.
#177
Re: TPI go fast tips and tricks?
See now that's scary, I was reading dmccain's response and that was the first thing that came to my mind when he said "that's what I said", the damn Goonies popped in my head only to see Drew post that very pic lmao...
For what it's worth guys, I've been messing with a stock, but ported, Tuned Port Injection along with a modded 305 myself. Turbo is going back on this weekend, but in the interim I figured I would document what it made naturally aspirated just for sheets and giggles. Datalogs show between 300-320 horsepower based on injector duty cycle at close to 6000-RPM, and the 1/4 mile analysis shows low to mid 13's with a 60' slightly over 2 seconds. I can't launch it on the street because the tires just light up, so I had to disable Launch Mode, and Power Enrichment in key areas of the bin so it's just working off of the SA Main Table, and TPS% for PE, Still forced to feather it either way. Would like to get it to the track and a decent dyno before the turbo goes back on to see what it has, officially,, but I do trust the EBL data that is being given to me. Looking at the datalog immediately after this blip today, TPS was at 70-75% because I am forced to feather it with no drag radials. I made this for one of the moderators earlier...
- Rob
For what it's worth guys, I've been messing with a stock, but ported, Tuned Port Injection along with a modded 305 myself. Turbo is going back on this weekend, but in the interim I figured I would document what it made naturally aspirated just for sheets and giggles. Datalogs show between 300-320 horsepower based on injector duty cycle at close to 6000-RPM, and the 1/4 mile analysis shows low to mid 13's with a 60' slightly over 2 seconds. I can't launch it on the street because the tires just light up, so I had to disable Launch Mode, and Power Enrichment in key areas of the bin so it's just working off of the SA Main Table, and TPS% for PE, Still forced to feather it either way. Would like to get it to the track and a decent dyno before the turbo goes back on to see what it has, officially,, but I do trust the EBL data that is being given to me. Looking at the datalog immediately after this blip today, TPS was at 70-75% because I am forced to feather it with no drag radials. I made this for one of the moderators earlier...
- Rob
#178
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Car: 1992 Trans Am
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPI go fast tips and tricks?
Hell,
I had a buddy bring his L69 HIGH OUTPUT 305 into the shop the other day. Wanted to perk it up a bit......
We "perked" it up alright. Full Mobil 1 oil change, set the plug gaps, and added a CATCO catalytic convertor.
We put down 376 RWHP, and 416 RWTQ. Car is stock, except for the newly added Mobil 1 and Catco.
Not many people realize the Catco convertors are manufactured with "high strength" steel. This creates far less turbulence vs other manufacturers (hence our 300RWHP gain compared to the normal 4-5 RWHP gain).
I had a buddy bring his L69 HIGH OUTPUT 305 into the shop the other day. Wanted to perk it up a bit......
We "perked" it up alright. Full Mobil 1 oil change, set the plug gaps, and added a CATCO catalytic convertor.
We put down 376 RWHP, and 416 RWTQ. Car is stock, except for the newly added Mobil 1 and Catco.
Not many people realize the Catco convertors are manufactured with "high strength" steel. This creates far less turbulence vs other manufacturers (hence our 300RWHP gain compared to the normal 4-5 RWHP gain).
#179
Re: TPI go fast tips and tricks?
... but most keep forgetting, I didn't put on my Mr. Gasket stickers that I got with my timing chain cover yet, and once those go on then all bets are off. Hell I'm thinking I might not even need the turbo anymore once those go on, just need to find the right spot because it's very critical.
- Rob
- Rob
#181
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Car: 1992 Trans Am
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPI go fast tips and tricks?
Forgot last Thursday.
Last Thursday, a customer of mine, Richard Head stopped in. He has an 89 Iroc, G92 bad boy he wanted to "spice up"
We gave him the deluxe package (air foil, TB coolant bypass, 180 degree stat, and bumper the timing up a smidge).
Dyno sheets were, unfortunately, destroyed in a massive tornado. However, stock he was making 210 RWHP, and 315 RWTQ.
After the deluxe package, he left with 391 RWHP, and 465 RWTQ.
He called me on Saturday and said "thank you, I just ran my first 10.89 @167".
Last Thursday, a customer of mine, Richard Head stopped in. He has an 89 Iroc, G92 bad boy he wanted to "spice up"
We gave him the deluxe package (air foil, TB coolant bypass, 180 degree stat, and bumper the timing up a smidge).
Dyno sheets were, unfortunately, destroyed in a massive tornado. However, stock he was making 210 RWHP, and 315 RWTQ.
After the deluxe package, he left with 391 RWHP, and 465 RWTQ.
He called me on Saturday and said "thank you, I just ran my first 10.89 @167".
#183
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Car: 1990 G92 IROC Z Miniram
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Re: TPI go fast tips and tricks?
This is me clowning when my car was stock with full exhaust system L98 G92 N10 T5 3.42 gears. Video not to clear but you can hear the engine.
#184
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Car: 1990 G92 IROC Z Miniram
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Transmission: G-Force T5
Axle/Gears: 3.73 Gears
Re: TPI go fast tips and tricks?
Here’s an all stock 87 Vette with free mods and tune. Remember the vettes have a better factory exhaust system than the f-bodies.
#186
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Car: 1992 Trans Am
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPI go fast tips and tricks?
Here’s an all stock 87 Vette with free mods and tune. Remember the vettes have a better factory exhaust system than the f-bodies.
https://youtu.be/gMkejIDOLv4
https://youtu.be/gMkejIDOLv4
#187
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: TPI go fast tips and tricks?
I honestly think they only help with weight and cooling. They flow about the same iirc?
Check out this vintage mag article of a single cat 88 formula 350.
https://www.thirdgen.org/forums/hist...drag-test.html
Check out this vintage mag article of a single cat 88 formula 350.
https://www.thirdgen.org/forums/hist...drag-test.html
Last edited by TTOP350; 07-31-2018 at 06:54 PM.
#188
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Car: 1992 Trans Am
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPI go fast tips and tricks?
I honestly think they only help with weight and cooling. They flow about the same iirc?
Check out this vintage mag article of a single cat 88 formula 350.
https://www.thirdgen.org/forums/hist...drag-test.html
Check out this vintage mag article of a single cat 88 formula 350.
https://www.thirdgen.org/forums/hist...drag-test.html
#189
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Car: 89 5.7 IROC/95 LT1 Corvette
Engine: All 5.7's
Transmission: 700R4 (Roessler)/ZF6
Axle/Gears: 10 bolt Zexel 3.23's. CTW 17" wheel
Re: TPI go fast tips and tricks?
I can't believe I wasted all this time, reading this thread waiting for that revelation of ultimate TPI power...
#190
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: TPI go fast tips and tricks?
#193
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Re: TPI go fast tips and tricks?
4 pages of a 2 year old thread...20 minutes of my life i can't get back, lol! Lots of fun memories, but not a lot of time slips to back up the claims? Of course i shouldn't talk, I got none either. A couple things I've taken from this thread... Justin, your 2.77 ls1 auto ran 13.4? So from that i can assume my 01 ss 6 speed 3.42 car had to be at least 13 flat? Which would mean my zz4 powered 86 was a solid low 12 car since i could spank any bolt on ls1? Cool! I wish i had time slips for all the fun cars I've owned over the years. After reading this thread I'm definitely gonna go run my 87 before summer is over to see how it does with what I've done to it. My l98 "feels" pretty quick, but without a trip to the track don't low if it'd hang with an ls1. A little off topic, but anybody know from experience how our cars stacked up against an older wrx? Only reason I'm throwing that out is cause my little old dodge Daytona I used to have could hang with a bolt on sti all day. Let the bench racing continue! This is fun
#194
Re: TPI go fast tips and tricks?
Originally Posted by zya5point0
My l98 "feels" pretty quick...
#195
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Car: 89 Firebird
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Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: TPI go fast tips and tricks?
I don't care how much power TPI makes. I love to see one under the hood. They are a part of the 80s, they are symbolic to these third gens, and the best looking SBC ever put under the hood of a GM car IMO. A 5.0 H.O. with its dual snorkel air cleaner is a close second.
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Car: 1986 Camaro SC
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Re: TPI go fast tips and tricks?
#198
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Car: 1991 Z28
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Re: TPI go fast tips and tricks?
The thing is after reading all this, you are better off just leaving it alone and enjoying the TPI for what it is worth. I think I am more confused on what to do now!
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Re: TPI go fast tips and tricks?
As SUPERIOR as they are all of us do not like LS engines in these classic cars. I know all about them and I agree they are awesome but they do not look as good under the hood of a car they did not come in to me and a lot of others . If I had a hot rod and not more of a show car I would definitely go LS. A guy was giving me grief about LS engines the other day and asked me why I didn't like them I replied I love em "I have one in my pickup and its great"
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Car: 1989 IROC-Z. Original owner
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Re: TPI go fast tips and tricks?
I really enjoyed BadSS's post though, wish he'd post some more.