TPI rebuild questions
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TPI rebuild questions
I'm thinking about rebuilding my 350, and building it into a 355 TPI.
How much, typically, would this cost, for a rebuild kit? What about machine work to the engine block?
Another question I had is, what will a 355 TPI, with a better exhaust, possibly headers, a ported throttlebody/ TPI plenum /SLP runners, and another cam do, performance wise? Is it possible (has anyone done it), to get 20-25MPG, and around 300-350 HP at the flywheel, with a 355 TPI? If anyone has done it, what sort of compression do you have, and what octane do you run? I'd prefer to be able to run 87, atleast (if performance gets hurt, no problem).. is this also possible?
Is this possible on stock heads? If not, is it possible with aftermarket heads?
I think that's all the questions I had, at the moment.
How much, typically, would this cost, for a rebuild kit? What about machine work to the engine block?
Another question I had is, what will a 355 TPI, with a better exhaust, possibly headers, a ported throttlebody/ TPI plenum /SLP runners, and another cam do, performance wise? Is it possible (has anyone done it), to get 20-25MPG, and around 300-350 HP at the flywheel, with a 355 TPI? If anyone has done it, what sort of compression do you have, and what octane do you run? I'd prefer to be able to run 87, atleast (if performance gets hurt, no problem).. is this also possible?
Is this possible on stock heads? If not, is it possible with aftermarket heads?
I think that's all the questions I had, at the moment.
Last edited by MasterEvilAce; Apr 13, 2004 at 02:45 PM.
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Joined: Apr 2002
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From: Houston, Texas
Car: 1989 GTA Nighthawk
Engine: 389 CID TPI
Transmission: TCI 700R4
Axle/Gears: 9 bolt 3.23
Re: TPI rebuild questions
Originally posted by MasterEvilAce
I'm thinking about rebuilding my 350, and building it into a 355 TPI.
How much, typically, would this cost, for a rebuild kit? What about machine work to the engine block?
Figure on $1,500 and be happy if it is less, but expect more.
Another question I had is, what will a 355 TPI, with a better exhaust, possibly headers, a ported throttlebody/ TPI plenum /SLP runners, and another cam do, performance wise?
It's like a recipe it all depends on what parts you put in it as to what it will do.
Is it possible (has anyone done it), to get 20-25MPG, and around 300-350 HP at the flywheel, with a 355 TPI?
Read my sig more my engine specs, I get 21 - 22 mpg on the highway at 75 mph. I have 3.23 gears.
If anyone has done it, what sort of compression do you have, and what octane do you run? I'd prefer to be able to run 87, atleast (if performance gets hurt, no problem).. is this also possible?
See my sig, I run 92 or better. For cat pee gasoline you're going to have to give up some performance and some compression.
Is this possible on stock heads? If not, is it possible with aftermarket heads?
Stock heads, probably not. Aftermarket, yes, you need a better combustion chamber and probably aluminum heads in order to run that 87 octane.
I think that's all the questions I had, at the moment.
I'm thinking about rebuilding my 350, and building it into a 355 TPI.
How much, typically, would this cost, for a rebuild kit? What about machine work to the engine block?
Figure on $1,500 and be happy if it is less, but expect more.
Another question I had is, what will a 355 TPI, with a better exhaust, possibly headers, a ported throttlebody/ TPI plenum /SLP runners, and another cam do, performance wise?
It's like a recipe it all depends on what parts you put in it as to what it will do.
Is it possible (has anyone done it), to get 20-25MPG, and around 300-350 HP at the flywheel, with a 355 TPI?
Read my sig more my engine specs, I get 21 - 22 mpg on the highway at 75 mph. I have 3.23 gears.
If anyone has done it, what sort of compression do you have, and what octane do you run? I'd prefer to be able to run 87, atleast (if performance gets hurt, no problem).. is this also possible?
See my sig, I run 92 or better. For cat pee gasoline you're going to have to give up some performance and some compression.
Is this possible on stock heads? If not, is it possible with aftermarket heads?
Stock heads, probably not. Aftermarket, yes, you need a better combustion chamber and probably aluminum heads in order to run that 87 octane.
I think that's all the questions I had, at the moment.
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