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Old 08-19-2005, 01:58 PM
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Chevy TPI motors...pros/cons

I am fixin' to rape a 87 IROC with TPI 350 for a drive train for my 34 Chevy. I have always been a Holley and manifold guy and don't have much experience with a TPI motor. The car is complete so i will be using the computer, harness and what not on the 34. I have read a bit on the possibilities for this motor but would like your 2 cents on performance mods. I don't plan on any 10 sec quarters in my 34, but would be heart broke if I couldn't catch a Tuner. Sling away, what do you think?

Matt

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Old 08-19-2005, 02:01 PM
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TPI's are great, just remember they run out of air around 5k rpm - build accordingly.
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Old 08-19-2005, 03:54 PM
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The long runner design promotes low and mid range torque. When they first came out on the Corvettes they advertised only 220HP but that came with 320+ ft.lbs or torque.

They have great potential when built properly. Though expensive, they can be upgraded to surpase their 5000RPM limit of power and create great power though a wide RPM range.
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Old 08-19-2005, 05:46 PM
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i believe thats a 305 in that iroc

siggy is absoultly right, not to minchen the gas mileage you get is another plus

thinking of which, would you believe i just paid $54.00 for 20.599 gal of gas

highway robbery i tell ya

J
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Old 08-19-2005, 06:39 PM
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Quote:
Originally Posted by jesse01
i believe thats a 305 in that iroc

thinking of which, would you believe i just paid $54.00 for 20.599 gal of gas

J
Is that all? I just paid $72.00 for 25 gallons.
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Old 08-19-2005, 06:50 PM
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Originally Posted by Blazin72
Is that all? I just paid $72.00 for 25 gallons.
don't that **** piss you off?

where you from?

J
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Old 08-19-2005, 07:19 PM
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Quote:
Originally Posted by jesse01
don't that **** piss you off?

where you from?

J

Yes it does piss me off, it's very frustrating. I was premium gas that I bought but it's still expensive. I live in Washington State.
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Old 08-19-2005, 09:05 PM
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Quote:
Originally Posted by Blazin72
Yes it does piss me off, it's very frustrating. I was premium gas that I bought but it's still expensive. I live in Washington State.
ya that **** makes me mad too

$2.59 is the going rate here in FL where i stay at

J
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Old 08-19-2005, 09:34 PM
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Yeah, thats why I try not to even look at the prices any more. Sometimes I feel like I want to break something when I see the prices go up.
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Old 08-19-2005, 09:41 PM
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Quote:
Originally Posted by Blazin72
Yeah, thats why I try not to even look at the prices any more. Sometimes I feel like I want to break something when I see the prices go up.
tell me about it i don't even watch the gas pump no more i just hold the lever on the nozzle until it quits pumping when it finally gets full

oh and mattmanuel sorry about getting off subject here but when i start talking about gas prices it gets me all worked up and pissed off so i have to vent a little here and there

but if you have any more questions go ahead and post em up here we'll help ya

gas prices

J
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Old 08-20-2005, 01:20 PM
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Just thought I'd toss in that gas prices here are now about 2.80 per gallon. I think im going to buy a motorcycle in the near future lol.
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Old 08-20-2005, 02:59 PM
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The economy of a motorcycle would be nice, but I cant park it at park and rides around here when I go to work. The meth-head car theifs around here would make off with it. Im thinking about swapping my T350 for a 4L80E.
Maybe I'll get better than 10mpg hwy that way.
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Old 08-21-2005, 03:50 PM
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Ok, lets go with the premiss that I can afford gas for a week end ride in my rod. Any performance suggestions or links to good info?

BTW, I got my Helms service manual yesterday and checked the numbers. Turns out that Jesse is right, it is a 305. Not sure if I am going to try an find a 350 to replace it or not. The 305 runs strong but needs freshend up.
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Old 08-21-2005, 04:02 PM
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A 350 wouldnt be hard to find, I think all you'd need would be some larger injectors and probably reprogram the ECM (??) as well as a few other odds and ends.

It really depends on what you want out of the engine. If it's just a cruiser then the 305 would work fine. Ive even seen some 305s running some pretty decent times.

How much will/does the car weigh? If it's fairly light it wouldnt take much out of a 305 to move it along. If it has a bit of heft to it the 350 would be the better way to go.
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Old 08-21-2005, 07:25 PM
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Quote:
Originally Posted by mattmanuel
Ok, lets go with the premiss that I can afford gas for a week end ride in my rod. Any performance suggestions or links to good info?

BTW, I got my Helms service manual yesterday and checked the numbers. Turns out that Jesse is right, it is a 305. Not sure if I am going to try an find a 350 to replace it or not. The 305 runs strong but needs freshend up.

i'd leave the 305 in it since it runs strong still, besides the TPI's airflow was designed for a 305

but if you want to get in to a total rebuild go ahead and get a good 350 block to start with than put an Accel big mouth manifold and super ram set up (plenum and runners). that will flow good for a 350

try Ebay with caution of course

www.tpis.com

www.linginfelter.com

also if siggy chimes in he'll probably have a site or two for ya

J
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