What Heads for my 408?
This is a discussion on What Heads for my 408? within the Internal Engine forums, part of the LSx Technical Help Section category; Been slowing putting together a 408 build. Getting the stock 6.0L Iron block bored to 4.030 this week and then ...
12-18-2008, 11:17 AM #1
What Heads for my 408?
Been slowing putting together a 408 build. Getting the stock 6.0L Iron block bored to 4.030 this week and then I am going to start on parts..
I live in OK and even though this isn't my DD, I do drive it daily since it gets better MPG's than my pickup. I am putting a 408 together to swap in it and want it streetable, like Mr. Luos's T/A . I want it streetable even if I don't drive it everyday.
My problem is, WHAT HEADS?? I am pretty sure on the TSP Giant cam though. And I want around 11:1 compression.
I want around 530-540RWHP and right around 500RWTQ.
My advantage is my Uncle and Grandpa run a Custom Engine shop here and they can get parts 25%-30% cheaper than I can off TSP or anything like that with all the Porting and Polishing capability with their shop's machines. Also I will get free labor on putting it all together the professional way. They do high-end build for old and new muscle cars and a BUNCH of the sprint car motors here that put out 500-600HP out of a SBC motor with 5.88 gears around a dirt track
So what heads? Here are some I have been looking at.. Remember I am wanting Around 11:1 compression, maybe more if I can get away with it??
Deck Height: ? Stock 02 2500HD 6.0L block
Head Gasket: Up in the air right now, .045 or .055 depending on CR
Pistons: Depends on heads/and CR
Here are the heads. Anything else is possible.. Just want around that CR..
This is the last motor they did for my last DD, 98 Grand Prix GTP motor (bought it with a spun bearing)
12-18-2008, 11:41 AM #2
I put tfs 235 cnc's on my 402 hoping to get it on the dyno tonight or tomorrow.
12-18-2008, 11:46 AM #3
12-18-2008, 12:28 PM #4
With a .045 gasket, and the stock CC chambers these come with I got 11:1 CR
12-20-2008, 05:15 AM #5
- Join Date
- Dec 2008
- VA BEACH, VA
- 99 Camaro
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