317 heads
Thread Starter
Teching In
Joined: Jan 2007
Posts: 16
Likes: 0
317 heads I met a guy and he says he has some 317 casting # heads that came off and escalade? I am basically wanting them to drop my compression ratio on my 99 T/A with the tti street 76 mm. Im just confused on whether all you need is that 317 casting number and that means you are getting the 71 cc chamber for the compression drop/ Will these work or where do I get the ones that will? If so do the springs and everything work well on this kind of setup or am i forced to upgrade them?
Yes the 317 6.0L heads have 71cc chambers. They will drop your compression ratio. As for changing the springs it is up to you. I would run a set of 918 springs at least. Just my opinion. The heads are a direct bolt on also. Hope that little bit of info helps.
Thread Starter
Teching In
Joined: Jan 2007
Posts: 16
Likes: 0
Thanks by the way. Im just trying to straight on this stuff before I jump into it. Ls1's are new for me. I come from a 350z and while that car handled better it definitely doesnt have the kick of a turbocharged v8. 
Originally Posted by iceman99
what should i pay for them
JK...Depending upon how good they look the average price (without springs) is somewhere between $300-$400...
Trending Topics
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
Originally Posted by 98turbls1
While most people accept money there are a few people that will accept unborn children.. =)
JK...Depending upon how good they look the average price (without springs) is somewhere between $300-$400...
JK...Depending upon how good they look the average price (without springs) is somewhere between $300-$400...
www.ls1tech.com/forums/showthread.php?t=655368
Towards the bottom of the post he has a set for 250 and theres another one a in the sale section for 200 shipped!
Towards the bottom of the post he has a set for 250 and theres another one a in the sale section for 200 shipped!
Teching In
Joined: Jun 2006
Posts: 40
Likes: 0
I got a set from eBay for $370.00 shipped. Complete with springs and valves.
Here is a used set up for auction right now.
317 6.0l Heads $300
Here is a used set up for auction right now.
317 6.0l Heads $300
Thats just the old law of not being able to find it when you want and the only thing you can find when you don't want it. Took me 6 months to find a set. Now thats all I see and can't find the stuff I want to buy now.
