budget heads on a 408
Teching In
Joined: Oct 2005
Posts: 45
Likes: 0
From: central IL
I'm running AFR 205s that've been opened up for the larger bore of the 6.0L. Not necessarily "budget" heads, but I had them already from my 5.7L. I've yet to see how they will perform. Should be dynoed within the next week.
budget heads for a 408 - patriot stg 3 ls-6 heads for i think 1,300-1,400. they flow over 300cfm at .600 lift. intake and i think 230 exhaust on a 4" bore.
they work well with my SLP 402. we'll see just how good they work after i put a big cam in it.
but i would just save up for some AFR 225's - or maybe even ET performance 225's... but the AFR's are a little cheaper and proven performers.
they work well with my SLP 402. we'll see just how good they work after i put a big cam in it.
but i would just save up for some AFR 225's - or maybe even ET performance 225's... but the AFR's are a little cheaper and proven performers.
We can do a set of stage III heads that are custom CNC machined with a 4.030" bore size and chambers from 59cc to 72cc. Here are the flow numbers on a set of these with 64cc chambers that are shipping today:
.100 72.5 64
.200 146.1 121.2
.300 213.8 174.7
.400 259.8 210.9
.500 293.1 228.7
.550 305.6 232.8
.600 315.3 235.7
This is on our 1020 Superflow with a 4.030" bore. Each set of these come with REV valves, ti retainers, Super 7 locks, bronze guides, the original Patriot Gold springs, all the good stuff and a flow sheet that is specific to your set of heads. These heads custom built for your application sell for $1,195.00 a pair assembled.
.100 72.5 64
.200 146.1 121.2
.300 213.8 174.7
.400 259.8 210.9
.500 293.1 228.7
.550 305.6 232.8
.600 315.3 235.7
This is on our 1020 Superflow with a 4.030" bore. Each set of these come with REV valves, ti retainers, Super 7 locks, bronze guides, the original Patriot Gold springs, all the good stuff and a flow sheet that is specific to your set of heads. These heads custom built for your application sell for $1,195.00 a pair assembled.
Trending Topics
I have the Patriot LS6 style stage 3 heads that were opened up for the 4.030 bore and recently dynoed 460 rwhp and 470 rwtq. My cam is tiny though so Im sure it would have made more with a beefier cam in it.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
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
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
I have the Patriot stage III LS6 style heads. They seem to be an awesome set of heads, I like them. Im also spraying 100-250. I would highly recommend them to anyone. Should have dyno #'s by the weekend.
On The Tree
Joined: Jan 2005
Posts: 112
Likes: 0
From: Boulder, CO
Turbo'd Stang said he tuned a 408 with *stock* heads and a 244/248/60x/60x/115 cam, and got 460rwhp 460rwtq:
https://ls1tech.com/forums/showpost....9&postcount=42
I PM'd him to confirm, and he said that yes it did have stock LS1 heads, and a LS6 intake manifold. Doesn't get more "budget" than that.
https://ls1tech.com/forums/showpost....9&postcount=42
I PM'd him to confirm, and he said that yes it did have stock LS1 heads, and a LS6 intake manifold. Doesn't get more "budget" than that.
Originally Posted by Miles in Florida
Turbo'd Stang said he tuned a 408 with *stock* heads and a 244/248/60x/60x/115 cam, and got 460rwhp 460rwtq:
https://ls1tech.com/forums/showpost....9&postcount=42
I PM'd him to confirm, and he said that yes it did have stock LS1 heads, and a LS6 intake manifold. Doesn't get more "budget" than that.
https://ls1tech.com/forums/showpost....9&postcount=42
I PM'd him to confirm, and he said that yes it did have stock LS1 heads, and a LS6 intake manifold. Doesn't get more "budget" than that.
Thread Starter
10 Second Club
iTrader: (9)
Joined: Jan 2004
Posts: 560
Likes: 0
From: Daytona Beach, FL
Originally Posted by Gunnar@Patriot
We can do a set of stage III heads that are custom CNC machined with a 4.030" bore size and chambers from 59cc to 72cc. Here are the flow numbers on a set of these with 64cc chambers that are shipping today:
.100 72.5 64
.200 146.1 121.2
.300 213.8 174.7
.400 259.8 210.9
.500 293.1 228.7
.550 305.6 232.8
.600 315.3 235.7
.100 72.5 64
.200 146.1 121.2
.300 213.8 174.7
.400 259.8 210.9
.500 293.1 228.7
.550 305.6 232.8
.600 315.3 235.7
Here are their flow numbers for the 3.90 bore:
LS1 5.3 Stage 2
Lift Intake Exhaust
.100" 67.2 57.5
.200" 140.4 110.7
.300" 207.8 168.7
.400" 252 213.2
.500" 290.3 240.8
.550" 304.1 248.7
.600" 317 254.7
I also have a friend who just bought unported dart 205s that he wants to trade. Would the aftermarket casting be better for the larger amounts of nitrous?
