Hey guys need some help kinda new to the game but im addicted to my z now and well its all up hill now, i was wondering what heads would be better to replace stock heads either trick flow or arf heads if any one could help already have mild can straigh pipe with cut off, headman headers, jet chip, air foil, moroso cold air, intake, performance Mass airflow sensor, elbow, ud pulleys, thinking of porting my tpi and tb and going with (3.73 or 4.10?) have 100 shot of juice but don't really want it probably turbo instead with 5psi well u guys let me know if u have info for me please that i can help or doing wrong....

 

Get your stock heads porter by Lloyd, I think they will flow better than the AFRs out of the box but the AFRs have more potential for porting.

 

to what size do you think would be a good port?

 

Ai.

 

Most heads in the 180cc range are good for most applications. 200cc heads from AI seem to be top dog right now though.

 

thanks i appreciate the help

 

I'd personally recommend AI, but there is a new sponsor on here who could probably make you a great deal on a set of ported stockers with a cam. See Port Masters - they have a few threads on here and elsewhere. Might be worth a try.

 

Okay few things here, first what size tb? Do you have a manual or auto? If its an auto you want a nice small diameter stall(9.5", not 12") (2400-3600). Also what size cam? specs....? If you want some idea of power with stock Trick Flows check my sig.
Although when I get back to the shop and get it back on the dyno after a few upgrades, I'll post new numbers. However as you can see the power is not that high considering the mods. There are ppl on here with just really good top end parts making the same or MORE power. SO I think you're hp goal is doable, but the TUNE is huge on that with your budget in mind. Like ppl said above Lloyd Elliot does some good porting for stock heads as well as Advanced Induction too, I sold a pair of ported stockers from Lloyd that flow better than my stock TFS.

 

I got a set of new Trickflows from HiFloEngines in Lakeland FL for around the same price as a set of le3 heads

215cc Intake Ports

Lift Intake Exhaust
.100 80.01 68.2
.200 142.9 131.2
.300 239.3 150.7
.400 256.8 210.4
.500 284.6 220.1
.550 300.01 234.6
.600 315.2 248.3