ToolGuru

I had a tpi unit along time ago and got rid of it. Now I've got the bug to be a bit different than all the other bellybutton 69 Camaros out there with a carb and a 14 inch air cleaner.

My engine is a 350 bored .030 over. Flat top pistons, four eyebrow reliefs, not sure if block was decked. Should be 9.75:1. 041 heads pocket ported. 1 5/8 dia full length headers. Cam is a Comp Extreme Energy 262. 218 & 224 @ .050 with .470 lift. First generation Edelbrock Performer manifold with 2200-2300 stall. 3.42 gears in a corp ten bolt rear.

I can get a nice TPI unit out of a 85 Vetter for $100. Car has always been set up for the street, would love around 425-450 tq at the flywheel. Can this be done with above TPI? What would need to be done to unit? Thanks for your replies.

ninetyone

iTrader: (2)

It would require porting the lower base manifold and the runners would have to be replaced.

ninetyone

iTrader: (2)

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vetteoz

iTrader: (13)

What Hp does it have at present , with the carb because it will not make that with a stockish TPI ? ( but will have much more torque )

ToolGuru

Right now it makes about 375 HP.

Jim85IROC

iTrader: (2)

I'd caution you about using the computer & harness from the 85 Vette. That particular year is a one-year specific computer that is very primitive and there aren't many people that tune them. The 85 Vette also ran a different fuel pressure (35lbs vs. 43 for everything else), and had the external MAF burnoff relay module.

If you're planning to run an aftermarket harness & ECU, then the 85 parts will be fine, but if you want a plug & play option, look for a TPI setup from an 86-92.

ToolGuru

Yes, from my reading on here that is exactly what I'll do. IF I do this. There are so many conflicting stories out there on what kind of power to expect. Yes, I understand torque is king on the street. My engine probably puts out over 400 ft lbs at the crank now, but at 5300 rpm. Could I expect the same, more, or less if I use that Vette tpi? I am thinking the TPI with my current setup would have a flat torque curve over 400 ft lbs from 1500 RPM to 5000 RPM. Am I off base in this thinking? Will ported and siamesed stock base, ported and siamesed runners , and ported plenum be up to the task?

ToolGuru

Ahhh, I'm going to pass. After reading post after post, its gonna cost around $1500 at least to have a decent running tpi. I can buy and swap in a LS engine for that kind of dough and have way more power along with injection.

ninetyone

iTrader: (2)

idk man, torque is only king from stoplight to stoplight. After about 40 or 50 mph in a tpi car, a car that weighs the same as you but has more hp will win.

ninetyone

iTrader: (2)

[QUOTE=ninetyone;5580359]idk man, torque is only king from stoplight to stoplight.

ninetyone

iTrader: (2)

idk man, torque is only king from stoplight to stoplight.

ninetyone

iTrader: (2)

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ninetyone

iTrader: (2)

Have you ever thought about a holley stealth ram intake manifold? They only run about $300 for the manifold.

ninetyone

iTrader: (2)

Porting will cost a couple of hundred to have done

ToolGuru

Wow. Can't thank you enough for the string of nonsensical posts and then the link to a jcpenny coupon.

ninetyone

iTrader: (2)

Sorry, there is something wrong with my account. It double posted too for some reason? Jc penney coupon? What do you mean?

ninetyone

iTrader: (2)

My advice to you is to ditch the TPI manifold altogether. If I had a thirdgen again, that's what I would do. Get a Holley Stealth ram if you want to stick with Fuel injection. You want good advice? You just go it. Thank you