Another 355 TPI car lays down big #'s
Senior Member
Joined: Jun 2010
Posts: 731
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From: Austin, TX
Car: 1989 G92 IROC-Z
Engine: 5 Liter 305
Transmission: T5
Axle/Gears: 3.45
Re: Another 355 TPI car lays down big #'s
Man you guys are making me so jealous! I can't wait to get my 355 going. I am still debating on stock or 3.750" crank.
Seeing these results really make me want to $ave the ca$h. I tried to keep the car stock, I can't do it.
Seeing these results really make me want to $ave the ca$h. I tried to keep the car stock, I can't do it.
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From: Prince George, BC, Canada
Car: 89 GTA
Engine: 5.7L Supercharged
Transmission: T-56
Axle/Gears: Moser 9" 3.70
Re: Another 355 TPI car lays down big #'s
Back to Orr's car for comparison.
My 355 motor was putting down around 370rwhp. My race weight was right around 3700 pounds. Car, heavy GTA 3440 and me at 260.
So let's say in comparable air my car went 12 flat. Take away 250 pounds and we are down to 11.75. Add 25 horsepower to my motor and we are down to 11.5 sec. Very comparible to Orr's numbers of 11.4.
My 355 motor was putting down around 370rwhp. My race weight was right around 3700 pounds. Car, heavy GTA 3440 and me at 260.
So let's say in comparable air my car went 12 flat. Take away 250 pounds and we are down to 11.75. Add 25 horsepower to my motor and we are down to 11.5 sec. Very comparible to Orr's numbers of 11.4.
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From: CPT (Southern Cali)
Car: 09 GSXR/88 iroc/91 RS B4C
Engine: 600cc/l5.7/5.7
Transmission: 6 speed/TH 350/auto
Axle/Gears: 45tooth rear?/3.23/3.42
Joined: Feb 2006
Posts: 1,265
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From: Sacramento Ca
Car: 86 Trans am, 91 Camaro RS
Engine: 355 Sbc, nothin yet
Transmission: 700r4- both
Re: Another 355 TPI car lays down big #'s
Does anyone know if Topteam had his factory ECM and wiring harness setup, or was it Aftermarket? Beautiful work down there fellas.. got me thinkn bout not strokin my block now.
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Posts: 238
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From: Long Beach Cali
Car: 68,87,99 maros, 07 tbss
Engine: TPI,LS2,LSA,L92
Transmission: T56,T56,T56, 4L80E
Axle/Gears: 12bolts and 14 bolt lol
Re: Another 355 TPI car lays down big #'s
I had factory GM ECM and harness, its been converted over to speed density by Don and tuned by Kevin.
Joined: Feb 2006
Posts: 1,265
Likes: 0
From: Sacramento Ca
Car: 86 Trans am, 91 Camaro RS
Engine: 355 Sbc, nothin yet
Transmission: 700r4- both
Re: Another 355 TPI car lays down big #'s
Are u running the 67cc twisted wedge tricks or no?
Thread Starter
Joined: Mar 2000
Posts: 5,703
Likes: 132
From: Orange, CA
Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Re: Another 355 TPI car lays down big #'s
See the full story and pictures here on the manifold work:
https://www.thirdgen.org/forums/tpi/...e-porting.html
https://www.thirdgen.org/forums/tpi/...e-porting.html
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From: Long Beach Cali
Car: 68,87,99 maros, 07 tbss
Engine: TPI,LS2,LSA,L92
Transmission: T56,T56,T56, 4L80E
Axle/Gears: 12bolts and 14 bolt lol
Joined: Feb 2006
Posts: 1,265
Likes: 0
From: Sacramento Ca
Car: 86 Trans am, 91 Camaro RS
Engine: 355 Sbc, nothin yet
Transmission: 700r4- both
Re: Another 355 TPI car lays down big #'s
Awesome setup man.. mine will be identical to yours, but with the Brodix IK200s.. Should be in your hp/tq range. Im excited. THanks for all your info.
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From: Chicago, IL
Car: 1986 Pontiac Firebird
Engine: 97 LT1 W/ Alot of goodies.
Transmission: 4L60E W/ Yank SS3600
Axle/Gears: 3.27 9 Bolt BW
Re: Another 355 TPI car lays down big #'s
Impressive I guess if you have to deal with smog laws.
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Posts: 238
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From: Long Beach Cali
Car: 68,87,99 maros, 07 tbss
Engine: TPI,LS2,LSA,L92
Transmission: T56,T56,T56, 4L80E
Axle/Gears: 12bolts and 14 bolt lol
Re: Another 355 TPI car lays down big #'s
All I wanted to add to this is stand by, she will soon be going under the knife 
.
. 
Supreme Member
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Posts: 6,859
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From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: Another 355 TPI car lays down big #'s
Good. 
You need to get those runners opened up some and you will be above 400rwhp. I have some issues with my car from the dyno session. Trying to figure out why it did what it did. I have yet to have a nice smooth normal dyno graph.
You need to get those runners opened up some and you will be above 400rwhp. I have some issues with my car from the dyno session. Trying to figure out why it did what it did. I have yet to have a nice smooth normal dyno graph. Member
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Joined: Jun 2005
Posts: 238
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From: Long Beach Cali
Car: 68,87,99 maros, 07 tbss
Engine: TPI,LS2,LSA,L92
Transmission: T56,T56,T56, 4L80E
Axle/Gears: 12bolts and 14 bolt lol
Re: Another 355 TPI car lays down big #'s
Well I'm trying to find a place to open them up (hint, hint). Hopefully al the top contenders are all ready for the next dyno day to just finally break that damn 400+ RWHP. I heard about your issues you were having.
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: Another 355 TPI car lays down big #'s
If not try the morel lifters..they say they are good for 5-10whp over factory style lifters due to the tool steel body..they wont flex under high oil pressures and bleed down at all.
Supreme Member
Joined: Feb 2006
Posts: 1,777
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From: Sanctuary state
Car: 67 ******mobile
Engine: 385 Solid roller
Transmission: T-56
Axle/Gears: 4.11
Re: Another 355 TPI car lays down big #'s
havent read the whole thread but I think those are fantastic #s for a SR 350!!!!
As far as the rest of the hijack garbage Don is posting about what hes DONE not about internet reading/repeated garbage. Voice of experience means everything .
party on Garth!
As far as the rest of the hijack garbage Don is posting about what hes DONE not about internet reading/repeated garbage. Voice of experience means everything .
party on Garth!
Member
Joined: Oct 2000
Posts: 128
Likes: 0
From: amanda ,ohio,usa
Car: 1989 camaro
Engine: 355 tpi
Transmission: 700r
Axle/Gears: 3.50
Re: Another 355 TPI car lays down big #'s
my car runs 13.01 @104 and weighs about 3700 lbs with me in it, and that is in just as bad as air you guys run at california dragway. my DA is almost always over 2000 and normally around 2800-3100 at NTR
Have you ran updated times since april 3 when you you ran vincent, I think you ran a 12.9 @105 1.83 60ft. and vincent ran 12.69 @ 109 1.94 60ft. Drag times says your DA was around 1800 to 2400 that day.
nice times for both but I thought you changed converters since then?
and vincents posi was out he said that day.
Senior Member
Joined: Jul 2006
Posts: 811
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From: 4-22 / 7-25
Car: '91 Z28 L98 G92
Engine: Modded L98
Transmission: Modded 700R4
Axle/Gears: Modded 10-Bolt
Re: Another 355 TPI car lays down big #'s
glad your happy with them, I think until I upgrade the intake the edelbrocks will be perfect for my combo.
my car runs 13.01 @104 and weighs about 3700 lbs with me in it, and that is in just as bad as air you guys run at california dragway. my DA is almost always over 2000 and normally around 2800-3100 at NTR
Have you ran updated times since april 3 when you you ran vincent, I think you ran a 12.9 @105 1.83 60ft. and vincent ran 12.69 @ 109 1.94 60ft. Drag times says your DA was around 1800 to 2400 that day.
nice times for both but I thought you changed converters since then?
and vincents posi was out he said that day.
my car runs 13.01 @104 and weighs about 3700 lbs with me in it, and that is in just as bad as air you guys run at california dragway. my DA is almost always over 2000 and normally around 2800-3100 at NTR
Have you ran updated times since april 3 when you you ran vincent, I think you ran a 12.9 @105 1.83 60ft. and vincent ran 12.69 @ 109 1.94 60ft. Drag times says your DA was around 1800 to 2400 that day.
nice times for both but I thought you changed converters since then?
and vincents posi was out he said that day.
Bill
Member
Joined: Oct 2000
Posts: 128
Likes: 0
From: amanda ,ohio,usa
Car: 1989 camaro
Engine: 355 tpi
Transmission: 700r
Axle/Gears: 3.50
Re: Another 355 TPI car lays down big #'s
I think you will run a couple tenths quicker as long as you hook, your stall was to low for stealth before
i'm opposite 3200 stall just little to high for my ltr setup.
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Joined: Jun 2005
Posts: 238
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From: Long Beach Cali
Car: 68,87,99 maros, 07 tbss
Engine: TPI,LS2,LSA,L92
Transmission: T56,T56,T56, 4L80E
Axle/Gears: 12bolts and 14 bolt lol
Re: Another 355 TPI car lays down big #'s
I'm planning on doing so, along with some other changes. I'll keep you guys posted as soon as I get those NEW numbers in
Senior Member
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From: San Antonio, Tx
Car: 86 Camaro Z28/ 87 Camaro IROC Z28
Engine: 5.0L TPI LB9 / 5.0 TPI LB9 w/cam
Transmission: Built 700R4 with Transgo shift kit
Axle/Gears: 3.27 9 bolt Posi/ 2.73 10 bolt Posi
Re: Another 355 TPI car lays down big #'s
Well you can be the first to find out.
The advantage we have here is that it only cost us $85.00 per hour to dyno our cars and Kevin91z is doing the tuning. In short, we have seen a lot of different TPI combos on the dyno and we know what works and what doesn't work. This is the information we are putting out there for the rest of you to know.
I know this for a fact and seen it for myself, a bone stock G92 350 with a full exhaust system with Dyno Don headers will produce 248-255whp@4800.
We have seen a 383 with a Vortec manifold, fully ported E-Tec 200 heads, XFI268 Cam and Super Ram make 331whp. After welding up the manifold and porting the hell out of it and changing the cam to XFI292 it made 394whp.
Another car with a fully Extrude Hone TPI Edelbrock system(manifold,runners,plenum), Fully ported Corvette L98 heads, LT4 Hot Cam and Dyno Don headers made 331whp.
Thanks to Jerrywho, he discovered how to rework the manifold and siemese the runners to make peek hp above 6000rpms. And we are still not done. We are working on making over 400whp and still pass emission in California. We are not changing parts, we are going to work with what we already have.
The advantage we have here is that it only cost us $85.00 per hour to dyno our cars and Kevin91z is doing the tuning. In short, we have seen a lot of different TPI combos on the dyno and we know what works and what doesn't work. This is the information we are putting out there for the rest of you to know.
I know this for a fact and seen it for myself, a bone stock G92 350 with a full exhaust system with Dyno Don headers will produce 248-255whp@4800.
We have seen a 383 with a Vortec manifold, fully ported E-Tec 200 heads, XFI268 Cam and Super Ram make 331whp. After welding up the manifold and porting the hell out of it and changing the cam to XFI292 it made 394whp.
Another car with a fully Extrude Hone TPI Edelbrock system(manifold,runners,plenum), Fully ported Corvette L98 heads, LT4 Hot Cam and Dyno Don headers made 331whp.
Thanks to Jerrywho, he discovered how to rework the manifold and siemese the runners to make peek hp above 6000rpms. And we are still not done. We are working on making over 400whp and still pass emission in California. We are not changing parts, we are going to work with what we already have.
Thanks for sharing
Joined: Feb 2006
Posts: 1,265
Likes: 0
From: Sacramento Ca
Car: 86 Trans am, 91 Camaro RS
Engine: 355 Sbc, nothin yet
Transmission: 700r4- both
Re: Another 355 TPI car lays down big #'s
did you ever find out about the valvespring issue? What is the best (yet affordable) valvespring setup to be using on the 280xfi?
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