lt1 vs tp1
TECH Resident
Joined: Aug 2005
Posts: 821
Likes: 0
From: SW Florida
well his camaro had the 5.7 in it...and from what i remember reading somewhere it came with 245 hp and like 315 tq or something...he also has a 5 speed so the time it took my auto to downshift he was gone
Ill do some research and see what i can find and let you guys know.
Ill do some research and see what i can find and let you guys know.
TECH Resident
Joined: Aug 2005
Posts: 821
Likes: 0
From: SW Florida
ok i found some info but now i am even more confused..
92 Z28 A4 L98 V8 9.3:1 5.7 (350) 245@4400 345@3200 TPI ---- ---- ---- 3.23
those were from a specs sheet from a 3rd gen site...what i dont understand is that it only lists that engine with an auto tranny option...no 5 speed. I am 110% sure his car was a 5.7 350, and it was a 5 speed cuz he could rip gears like no other so now i am lost. Is there something i am missing here?? It was an all original car so i know he didnt drop a new motor or ne thing like that in...Like i said he told me his car was rare but now i wanna find out why.
92 Z28 A4 L98 V8 9.3:1 5.7 (350) 245@4400 345@3200 TPI ---- ---- ---- 3.23
those were from a specs sheet from a 3rd gen site...what i dont understand is that it only lists that engine with an auto tranny option...no 5 speed. I am 110% sure his car was a 5.7 350, and it was a 5 speed cuz he could rip gears like no other so now i am lost. Is there something i am missing here?? It was an all original car so i know he didnt drop a new motor or ne thing like that in...Like i said he told me his car was rare but now i wanna find out why.
Originally Posted by YoungGunLs1
ok i found some info but now i am even more confused..
92 Z28 A4 L98 V8 9.3:1 5.7 (350) 245@4400 345@3200 TPI ---- ---- ---- 3.23
those were from a specs sheet from a 3rd gen site...what i dont understand is that it only lists that engine with an auto tranny option...no 5 speed. I am 110% sure his car was a 5.7 350, and it was a 5 speed cuz he could rip gears like no other so now i am lost. Is there something i am missing here?? It was an all original car so i know he didnt drop a new motor or ne thing like that in...Like i said he told me his car was rare but now i wanna find out why.
92 Z28 A4 L98 V8 9.3:1 5.7 (350) 245@4400 345@3200 TPI ---- ---- ---- 3.23
those were from a specs sheet from a 3rd gen site...what i dont understand is that it only lists that engine with an auto tranny option...no 5 speed. I am 110% sure his car was a 5.7 350, and it was a 5 speed cuz he could rip gears like no other so now i am lost. Is there something i am missing here?? It was an all original car so i know he didnt drop a new motor or ne thing like that in...Like i said he told me his car was rare but now i wanna find out why.
TECH Resident
Joined: Aug 2005
Posts: 821
Likes: 0
From: SW Florida
I would have to guess that he had to have installed the 5 speed after he got it then...he obviously forgot to mention that he had done that himself and it didnt come that way. no wonder why he was able to take me...lol
I had a 305 powered TPI formula and with some minor weight reduction, 3.70 gears in the 9 bolt, and little cheapy mods ran a 14.1. I think I may still have the timeslip somewhere, but that was a couple years ago. BTW: The car was a 5 speed.
The TPI takes alot of bashing, but is a very good platform to build on. I have seen many TPI cars keep up with LT1's. Its just a matter of like previously stated, knowing where they are weaker and start to mod there. The TPI has a strong flat torque curve but it runs out of steam above 4500RPM's.
96capricemgr: The L98 heads had a 58cc chamber, so there would not need to be much more milling to bump the compression up. I have seen multiple people put some mildly worked over L98 heads on the LB9 305's and seem to work very well.
There are many LB9 305 5 speed cars running in the 13's with some real easy mods, so thats shouldn't be in question...especially when some weight reduction/heads/cam/intake mods can be done fairly easily and pick up alot of HP. The LB9 auto cars seem to have alot of trouble getting even to mid 14's from what I have seen, even with a good converter and other mods. 350 TPI cars in nice shape that have been well maintained, should be around a 14.3-15.0, thats no rocket but not too far off of the stock LT1 times. When the heavy modding starts, the LT1 shines because of its better intake, and higher RPM capabilities...as well as marginally better flowing heads from the factory.
The TPI takes alot of bashing, but is a very good platform to build on. I have seen many TPI cars keep up with LT1's. Its just a matter of like previously stated, knowing where they are weaker and start to mod there. The TPI has a strong flat torque curve but it runs out of steam above 4500RPM's.
96capricemgr: The L98 heads had a 58cc chamber, so there would not need to be much more milling to bump the compression up. I have seen multiple people put some mildly worked over L98 heads on the LB9 305's and seem to work very well.
There are many LB9 305 5 speed cars running in the 13's with some real easy mods, so thats shouldn't be in question...especially when some weight reduction/heads/cam/intake mods can be done fairly easily and pick up alot of HP. The LB9 auto cars seem to have alot of trouble getting even to mid 14's from what I have seen, even with a good converter and other mods. 350 TPI cars in nice shape that have been well maintained, should be around a 14.3-15.0, thats no rocket but not too far off of the stock LT1 times. When the heavy modding starts, the LT1 shines because of its better intake, and higher RPM capabilities...as well as marginally better flowing heads from the factory.
Young Gun that is a 92 Firehawk Motor 350 With a speacil Induction I forget what it had it wasnt TPI though some time of Fuel Injection
It had Lt-1 Pistons, in a Gen 350 Block, GM PInk rods, which are stronger and lighter along with a Vette heads, and I guess that Fuel Injection system I was trying to remeber was pretty nasty, Thoose cars has the old style vette 6 speeds to, They made 350 hp easily
It had Lt-1 Pistons, in a Gen 350 Block, GM PInk rods, which are stronger and lighter along with a Vette heads, and I guess that Fuel Injection system I was trying to remeber was pretty nasty, Thoose cars has the old style vette 6 speeds to, They made 350 hp easily
Launching!
Joined: Nov 2005
Posts: 245
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The special car in 92 was the firehawk, It was an special edition SLP car. It was a TPI 350 with a T-56 speed. I think it put down like 350 horses aint reall sure. I seen it on speed vision if anybodys got that. Look for the show its called American Muscle Car.
It wasnt Tpi it Was TRAM and the 350 was 350 hp, and 2 cars got an aluminum 366ci block 375 hp 400tq, and it wasnt t-56 it was a Vette ZF 6 speed, back down to a danna 44 on Firehawk Rims with 275 tires, and the car wieghed 3200lbs..... Nasty whip especailly for 1992.
oh btw u could order then with 40 g Ferrari F40 Brakes and Level III suspension, I know this sounds like Bs but go look it up, This is the only REAL Firehawk.
oh btw u could order then with 40 g Ferrari F40 Brakes and Level III suspension, I know this sounds like Bs but go look it up, This is the only REAL Firehawk.
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Originally Posted by TonyP187
Young Gun that is a 92 Firehawk Motor 350 With a speacil Induction I forget what it had it wasnt TPI though some time of Fuel Injection
It had Lt-1 Pistons, in a Gen 350 Block, GM PInk rods, which are stronger and lighter along with a Vette heads, and I guess that Fuel Injection system I was trying to remeber was pretty nasty, Thoose cars has the old style vette 6 speeds to, They made 350 hp easily
It had Lt-1 Pistons, in a Gen 350 Block, GM PInk rods, which are stronger and lighter along with a Vette heads, and I guess that Fuel Injection system I was trying to remeber was pretty nasty, Thoose cars has the old style vette 6 speeds to, They made 350 hp easily
Originally Posted by SmokedOutZ28
Naw, just playing i believe it... Gmhightechperformance got a 305 to run mid to high 12's in a 5 speed firebird. way way way back in the day though!
as for the race I think it will be a good one tim has kept up with LT1's
Well this time hes sitting next to me, and he says they had the intake off of the car and did some hand porting with a dremel, whatever they could get to with the heads on the car. That car ran damn good!!! Well for a tuned port 305 anyways!
Originally Posted by 96capricemgr
Did he mill the snot out of the 350 heads to allow him some comprtession with the smaller displacement? A "lopey" cam and the LOW compression which 350 heads on a 305 would result in is not a good recipe. I bet it was a 350.
For comparison though my baby cammed LT1 in my much heavier Caprice with 2800/3.42s has gone 13.2 on the ONLY night out since the header install and this is with the stock iron b-body heads, I feel there is more left in the combo especially given 87 octane at that time and a minor topend fuel issue.
The TPI isn't all bad you just have to recognize and correct it's weaknesses if you expect it to go fast, the intake and heads are WEAK like the headfs in stock form are under 200cfm.
For comparison though my baby cammed LT1 in my much heavier Caprice with 2800/3.42s has gone 13.2 on the ONLY night out since the header install and this is with the stock iron b-body heads, I feel there is more left in the combo especially given 87 octane at that time and a minor topend fuel issue.
The TPI isn't all bad you just have to recognize and correct it's weaknesses if you expect it to go fast, the intake and heads are WEAK like the headfs in stock form are under 200cfm.
TECH Resident
Joined: Aug 2005
Posts: 821
Likes: 0
From: SW Florida
for all those that said the special edition car in 92 was a firehawk or w/e it sounds like a sweet and powerful car...but thats not what his was..obviously since I said it was a 92 Z28 conv. and it was a TPI 350..he just swapped in a 5 speed in place of the auto.
