what size chambers for heads?
Team Owner
Joined: May 2001
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From: Exiled to Richmond, VA - Finally sold my house in Murfreesboro, TN ?? Corner of "Bumf*&k and 'You've got a purdy mouth'."
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Re: what size chambers for heads? (redwingvette)
That would really depend on the pistons that you are using. If you are using aftermarket pistons in a engine rebuild, then you would have to match your heads and pistons to get the compression ratio you want.
If you are just putting a set of heads on an existing motor, you would need to know the current CC of the heads and the current compression ratio. From there you could tell which heads to go with.
Good luck.
If you are just putting a set of heads on an existing motor, you would need to know the current CC of the heads and the current compression ratio. From there you could tell which heads to go with.
Good luck.
Racer
Joined: Dec 2001
Posts: 498
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Re: what size chambers for heads? (redwingvette)
73 heads should be 76cc. If you are going Edelbrock I think you can get 72cc chambers. That would give you about a 1/2 point. You should be able to run 10:1 with decent aluminum heads on that engine without any problems.
Le Mans Master
Joined: May 2000
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From: Bloomington MN
Cruise-In II Veteran
Re: what size chambers for heads? (compuvette)
BSeery is right about the fact that it depends on the pistons used. I would say though, that 60cc would give you quite a high compression ratio. L46 and LT1 came with 64 cc chambers for an 11:1 compression ratio. That's why I am not driving my car today (too hot and it pings). :sad:
AC
AC
Melting Slicks
Joined: Oct 1999
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From: Tolar Texas
Re: what size chambers for heads? (redwingvette)
Seems like it would be best to buy the 70cc heads due to possible future combinations that you may use those heads on. I could be wrong, but I believe that using 60cc heads may limit your piston selection / ablility to get a low enough compression ratio.
I'm having a hard time wording this one. :confused:
70cc - Easier to create desired compression ratio using commonly available pistons.
60cc - Difficult to create desired (lower/streetable) compression ratio with commonly available pistons, especially with a stroked engine.
[i]Whether I'm right or wrong on this, I hope someone can clarify this for me.
Are there any negatives to 70cc heads given that piston selection is available to achieve any desired compression ratio that a person needs?[i]
I'm having a hard time wording this one. :confused:
70cc - Easier to create desired compression ratio using commonly available pistons.
60cc - Difficult to create desired (lower/streetable) compression ratio with commonly available pistons, especially with a stroked engine.
[i]Whether I'm right or wrong on this, I hope someone can clarify this for me.
Are there any negatives to 70cc heads given that piston selection is available to achieve any desired compression ratio that a person needs?[i]
