Hi, i am new to the site. I have a 1990 305 Iroc-Z pretty much stock. Mods include:
Hypertech Performance Chip
Hypertech Airfoil
Accel 8.8 mm wires
MSD 48,000 volt coil
80-series flowmaster exhaust
Stewart water pump
Powerstop rotors
& Splitfire plugs
Car is still runnning strong at 136,000 miles
177.1 RWHP & 243.7 RWTQ

I am planning to build a 350 to stick under my TPI: i need some help on combo's to gain about 320 HP and 400 TQ.

If anyone has any experience in accomplishing this under 3000 or 4000 dollars, i would love to know.

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1990 Iroc-Z 305ci
Http://shaunsiroc.fbody.com

 

If you use the stock intake setup, ported of course i would go with some like this.
TF 23* heads
cam-between 218-224 dur. @50 and lift about .510-530
pistons-about 9.5-10:1 comp
22# or 24# injectors.. in theory to tune it roght with the 24#'s you need to make changes to the chip.
You could always go with some large tube runners and big mouth base. I didnt have the $ for those and am not a big fan of them but alot of people like them.
Of course all of thi depends on how much money you have to spend and how fast you wanna go. i did my buildup for about $2200. of course you dont have to buy $400 pistons either
There are alot of combinations that make power, you just need to choose one that fits your budget and needs.

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Brandon
"ScreaminDeamin 360"
350 60 over, TRW forged 9.83:1 pistons,Hooker Comp headers, crane cam 216/228 .484/.512, crane 1.6 RR's, ported plenum, home made ram air, 24lb SVO injectors, crane AFPR, all going through 3 inch mandrel pipe and a flowmaster.
New project-89 IROC-305 5spd...Jamex Springs...and thats just about it!Soon- 6 speed, Pro 5.0 shifter and 4.10's

http://ScreaminDeamin.cz28.com

 

Shaun,
Glad you found your way over here.
Just thought I would add that I am
shortly going to be delving into EPROM
burning / modifying, so if you build up
beyond the capabilities of the ECM,
we should be able to take care of it.

Cheers

Richard

 

Yup, i finally made it here. Thanks for the info.

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1990 Iroc-Z 305ci
Http://shaunsiroc.fbody.com