Iroccer

iTrader: (1)

I bought an '86 iroc with a tired 305 tpi. I'm going to build a 350 for it but I'm wondering if i can get a little more cam with out screwing with the computer.I had plan just a stock l98 build but thought a little more grunt would fun.
I realize I need the knock sensor the 350 prom and a few other things I found out about on this site. but how far can I go with the cam with out any hassels. It will probably get headers and a cat back eventually.

You guys are the experts, you bail me out all the time. I know some one has done this before. Any help will be greatly appreciated

five7kid

iTrader: (14)

Oh yeah, plenty out there.

First need to know if your 350 is roller lifter or flat tappet.

Iroccer

iTrader: (1)

well I'm going to use a 95 truck block and probably some stock l98 heads unless something comes up.

Pocket

iTrader: (24)

LO5's were a toss up. You have to visually check if its machined for a roller cam or not. Simply a year wont suffice

Iroccer

iTrader: (1)

well I have a 350 block that came from a 95 chev pick up with vortec heads I probably won' use those heads unless I get a killer deal on a vortec intake base . I can go roller or flat tappet. I need to know what cam to choose with out making the computer go crazy. I just want to make the car a little more snappy than stock because I have a stock Iroc also. I do have a stock chip from an 88 Iroc tpi. Will it plug into my computer? Will that make the cam choices better?

Pocket

iTrader: (24)

A 95 LO5 wont have vortec heads. Centerbolt valvecovers, yes but not factory vortecs. Vortec started in 96 with the CPI

Itd be counter productive to put a tappet cam into a roller block. Find out what you have first

A TPI chip will not work with the TBI PCM. A Fbody TBI chip will also not work with the truck TBI PCM. They are very different. Fbodys TBI ECMs are a derivative of the TPI ECM where trucks started over with a PCM to control the new 4L60E transmission. Even if it did swap over, off the shelf chips are junk. There is no replacement for a proper tune

Iroccer

iTrader: (1)

did I say 95 I meant 96. I want to use the computer in the stock tpi 305 86 iroc. I would like to replace the 305 with a 350. I'm going to use the 96 350 truck block, crank, and rods. I may use vortec heads if I can find an intake base cheap. if not I will go wit circa 86 stock heads.

We're kinda getting off point here. I need to know how much cam the stock '86 computer will take and will an 88 stock chip wor in that computer.

Pocket

iTrader: (24)

It will need a tune and injectors. Youll be beyond maxed on both with the 350 shortblock, 305 heads and TPI on there

L98 Prom/MEMCAL and injectors may get you close, but itll never be perfect

five7kid

iTrader: (14)

If I already had Vortec heads, I would do what it took to get a Vortec base before settling for L98 heads.

Atilla the Fun

I agree with five7kid. But if you don't care about power, then sell the Vortec heads, and then you'll have enough $ to finish the project properly.

Iroccer

iTrader: (1)

After all this I think I'm just going to put a stock l98 in place of the 305. I'll get the chip, the injectors the knock sensor, and anything else i need to make it happen