so anyways im a newbie on this site have been reading the fourms 4 awhile eversince i bought my 88iroc . so heres my issue my 350 tpi at around 120000 started knockn spun bearing on the crank ya ya it suxs but i had wanted to build it and get more power out of it . Heres my problem im confused on how i should go about this . Im trying to budget my money to but i really wanna keep my tpi i think itd b easier then swapping to carb . so heres the thing i wanna keep the manifold the stock tpi . what should i do 4 bottom end ? i really want different heads and a cam but what heads and cam would u use with that setup . and is there anyother easier ways around my problem im jus confused on what ui should do . bc i spent u no a good amount of money on my tpi setup and wanan keep it that way . thanks 4 any adive on what i should do a new engine!

 

how much money are you looking to spend?

 

For a relatively stock TPI setup, with the long tube runners and all, a good combo seems to be the smaller Trick Flow heads (180cc runners I think) and the Comp "302" cam. The Edelbrock heads also work OK for a budget setup. use 64cc chambers.

The bottom end hardly matters. Don't waste any money "beefing it up". The TPI will protect it from ever seeing any significant stress. If it spun a bearing, just get the crank turned and re-use everything else. If it has to be bored, make sure you do whatever it takes to keep the compression up; flat-top pistons, and CHECK THE DECK CLEARANCE!!! Get that as close to .000" (pistons reach the top of the bore at TDC) as possible. Most "rebuild" pistons add .020" of clearance to the stock value, which is already .025" more or less; meaning, on most rebuilds, the pistons are .045" "down in the hole" at TDC. That just KILLS compression and quench.

 

sorry but bc im not to good with the numbers and what not , the 302 cam what would be the intake and exhauste number ? and how much am i lookin to spend i realize prolly a grand or 2

 

302 is the grind number.

This is it. Very good cam for a stock TPI intake setup.

Yeah, a grand or 2; or 3 or 4... or maybe even more.

Be a little more specific, and maybe we can help point you in the right direction, to get the most out of whatever you spend without wasting it on anything that doesn't do any (or much) good.