317 casting vs LQ9 heads
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317 casting vs LQ9 heads
So is there a difference in 317 castings. I thought they all had d shaped exhaust ports, but I saw some pics of a 317 head that looked like it was an oval exhaust port?? so is there a difference in the 12562317 casting vs the 12572035(LQ9)casting??
Last edited by chriswtx; 03-17-2006 at 07:09 PM.
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Are you sure the port was oval and not the exhaust carbon reside on the head?? While the port is a D shape, the exhaust is not... it will leave a round spot on the head making it look oval in a photo. Post up what you have seen, Id like to see it.
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I see you edited your first post... I have had a ton of 6.0L core and have never seen an 035 casting head.. not to say there isnt one, but Ive never seen it... sure thats not the part number instead of the casting number?
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Guy on the board here selling 317 heads and sent me pics. They look oval, and he even said they looked oval to him. Weird...Oh well, guess I will keep looking...No hurry...Thanks for the input..
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GRFMotorsports... and Richard@WCCH.. sounds like you guys are very knowledgable in this topic. I have a question.
Is the deck height the same on the 6.0L 317s vs stock 5.7L LS1 heads? Have you ever seen any variances?
Thanks.
Is the deck height the same on the 6.0L 317s vs stock 5.7L LS1 heads? Have you ever seen any variances?
Thanks.
#13
Originally Posted by chriswtx
So is there a difference in 317 castings. I thought they all had d shaped exhaust ports, but I saw some pics of a 317 head that looked like it was an oval exhaust port?? so is there a difference in the 12562317 casting vs the 12572035(LQ9)casting??
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Originally Posted by Avengeance
GRFMotorsports... and Richard@WCCH.. sounds like you guys are very knowledgable in this topic. I have a question.
Is the deck height the same on the 6.0L 317s vs stock 5.7L LS1 heads? Have you ever seen any variances?
Thanks.
Is the deck height the same on the 6.0L 317s vs stock 5.7L LS1 heads? Have you ever seen any variances?
Thanks.
Hope this helps.
Richard
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Originally Posted by Avengeance
GRFMotorsports... and Richard@WCCH.. sounds like you guys are very knowledgable in this topic. I have a question.
Is the deck height the same on the 6.0L 317s vs stock 5.7L LS1 heads? Have you ever seen any variances?
Thanks.
Is the deck height the same on the 6.0L 317s vs stock 5.7L LS1 heads? Have you ever seen any variances?
Thanks.
Agreed... I havent seen much of a difference in the ones I have measured. I wouldnt call myself to knowledgeable.... Im learning like the rest of us, I just happen to get alot of 6.0L core in and try to pick up as much as I can.. now if I could just remember it all. Im just now in the process of putting together, instead of tearing apart, my first Gen III engine. Last time I was messing with building a performance engine they had carbs and distributors.. oh yeah and big blowers and N2O plates.... not all on the same engine mind you...lol