What Heads for my 408???
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
. 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. Maybe more or less? It's ALL up in the air right now.
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??
Motor specs.
Bore: 4.030
Stroke: 4.000
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
http://www.c5frc.com/calculators/Com...Calculator.htm
Here are the heads. Anything else is possible.. Just want around that CR.. Or better if someone has any more info..
http://www.texas-speed.com/shop/item...d=135&catid=40
http://www.worldcastings.com/prods_p...arhawkls1x.htm
http://www.trickflow.com/egnsearch.a...0&autoview=sku
This is the last motor they did for my last DD, 98 Grand Prix GTP motor (bought it with a spun bearing)
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
. 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. Maybe more or less? It's ALL up in the air right now.
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??
Motor specs.
Bore: 4.030
Stroke: 4.000
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
http://www.c5frc.com/calculators/Com...Calculator.htm
Here are the heads. Anything else is possible.. Just want around that CR.. Or better if someone has any more info..
http://www.texas-speed.com/shop/item...d=135&catid=40
http://www.worldcastings.com/prods_p...arhawkls1x.htm
http://www.trickflow.com/egnsearch.a...0&autoview=sku
This is the last motor they did for my last DD, 98 Grand Prix GTP motor (bought it with a spun bearing)
I have TSP's 5.3 2.5's and a MS3. dont have any numbers yet....
but they are probably a little small for a 408 to be honest.
If your not wanting to spend huge coin, I'd look into the new PRC 215's.
but they are probably a little small for a 408 to be honest.
If your not wanting to spend huge coin, I'd look into the new PRC 215's.
Anyone with more info? As far as what heads/cam they have and what numbers they put down?
I am really liking the TF 235CC runners and 70cc chambers right now due to the fact its a good sized runner, and with 70cc chambers on a 408 with a little tighter quench (.045 MLS gasket) I will be right at 11:1 CR
I am really liking the TF 235CC runners and 70cc chambers right now due to the fact its a good sized runner, and with 70cc chambers on a 408 with a little tighter quench (.045 MLS gasket) I will be right at 11:1 CR
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo Now my car is Not a DD.. But I do drive it daily.. Well lets just say I have other transportation if I choose to drive it.. But the T/A is just so much better!!