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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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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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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.
__________________
Bringing history and technology together.
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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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08-19-2005, 06:39 PM
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Quote:
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08-19-2005, 06:50 PM
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 where you from? J
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08-19-2005, 07:19 PM
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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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08-19-2005, 09:05 PM
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$2.59 is the going rate here in FL where i stay at J
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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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08-19-2005, 09:41 PM
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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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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.
__________________
Bringing history and technology together.
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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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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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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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08-21-2005, 07:25 PM
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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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