IROC-Z Head, cam, intake swap. Warm idle, stock tune.

[rp87formula]

cars sounds awesome!!! What is your timing set at?

[Avirexwun]

That Is a sexy engine.

[IrocZCamaro88]

What cam and heads do you have?

[pmanson0624]

Beautiful

[c0olj]

I think it was around $700. But I paid more because I wanted the polished version.

[illbreakurface]

@c0olj did the intake drop right in or did u have to do some modifications?

[camaro88iroc]

if u don't mind me asking, how much did u buy the intake and fuel-rails to go with it for?

[eli310]

sounds good because the runners are for hosepower theres different runners but the shorter the runner the more torque the longer runner more hosepower

[wjrneo2]

The "tuned" port design is over rated. Especially using factory stock, or factory compatible aftermarket replacements. The runners are too narrow, and don't allow the engine to breath in the upper RPM's. The Longer intake path also creates a restriction as the revs climb.

LT1 got around this with a relatively small plenum area, and short runners. It doesn't take advantage of a tuned pulse like TPI does, but the torque curve is flatter, and broader resulting in more power under the curve.

[eli310]

why the intake swap need more torque cuz ur lost the runners

[c0olj]

TPI is not a good intake to make high HP numbers on. They start to choke out at 4500 RPM. I still have the stock stall and gears (for now), and I have no problem shredding the tires. Plenty of torque. And now the car pulls to 6100 rpm easily. I couldn't be more happty.

[wjrneo2]

No one ever complained about LT1s lacking throttle response or torque.

An iron headed LT1 with a baby cam makes 70hp more than its TBI cousin using the same camshaft. This is the heads and intake alone making all that extra power.

I've had a HSR, I NEVER noticed a lack of torque. Just a big smile on my face as the tach kept on trucking way past 5,000rpm without slowing down.

[johnknight1981]

i think i just cam....yeap i did ( yells at wife to give him a towl)

[c0olj]

Thanks man! Good luck on your build!

[88fastgta]

really nice Z man.... love the irocs and GTA.... arent you irocthe5.7 the moderator on thirdgen.... im 88fastgta... really love the way your car sounds.... i just built a 355 forged hotcammed highflow tpi setup... looking to get afrs next year....