Dohc/sohc
Le Mans Master
Joined: Dec 2004
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Just to extend your comment. The LT5 in the C4 ZR-1 was the only production Corvette to EVER use double overhead cams. Every other V8, big block or small block since 1955, uses the one cam in the block.
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Team Owner
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From: sw Ohio
Burning Brakes
Joined: Apr 2004
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From: Huntington ma
Yeah, and Ford's business case for making the change to the OHC motors made So much sense. Higher fixed cost (Much higher, as much as $400 per vehicle in some cases), less HP and lower torque than the motors they were replacing (at the time, anyhow). NO improvement in either economy or emissions compliance. Big changes required in all of the body structures to accomodate wider and taller moters, etc.
I guess ridding themselves of the "old school" pushrod motors was worth it. Whatever, the whole OHC thing Still hasn't resulted in anything positive, as far as I can see. Meanwhile the old pushrod SBC (granted in it's third incarnation now with the LSx designs) keeps on getting it done..
I guess ridding themselves of the "old school" pushrod motors was worth it. Whatever, the whole OHC thing Still hasn't resulted in anything positive, as far as I can see. Meanwhile the old pushrod SBC (granted in it's third incarnation now with the LSx designs) keeps on getting it done..
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Imagine the power if they install a DOHC in today's ZR1.
Drifting
Joined: Dec 2005
Posts: 1,313
Likes: 2
From: High Ridge Missouri
They don't need it, that's the reason they don't do it. With the LSx gen engines they designed a head that can flow as well as 4v DOHC heads can without the cost or complexity.
So I imagine the power and you know it's about the same.
So I imagine the power and you know it's about the same.
