USMC5811

iTrader: (2)

I'm doing my first motor build which is a 408 but i'm torn between what heads to run. TSP recommended the LS3's as a great flowing budget head, but they also said their "As-Cast" heads are great cathedral heads as well. Does anyone have any experience with them?

DaFireMan

iTrader: (5)

Very little info on tech about those heads, just say something in another section about them an after a few post one person found something about them on a 01 zo6. ill shoot you the link

DaFireMan

iTrader: (5)

PRC As Cast Heads Dyno Results on 01 Z06

search for this, i couldn't get the link

Rise of the Phoenix

iTrader: (27)

You'll get more responses in the III Generation Internal Engine section. I would talk in depth with Texas Speed in regards to your goals and usage for the car. They can lead you in the right direction.

backdraft408

If you dont have a budget im running tsp ls3 250cc aftermarket heads on my 408. so far im at 520rwhp and could get more.