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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: onelow84 on May 12, 2012, 07:39:22 am
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I was just wondering if anyone could give me some info. I have a friend giving me a set of fresh vortec heads, the problem is I already bought a cam. I was curious what I need to do to run a .477/.480 cam with these heads. the setup i was getting ready to put together was a 600 dual feed double pump holley, performer rpm intake, comp xe268 cam with matching springs a set of stock 1.94 heads (just old smog heads) flat top pistons and a set of 1 5/8 headers. will i be able to keep the headers also? any help is appreciated!
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You should be fine
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As long as the valve springs can handle that lift, which they should, you should be fine.............just like VileZambonie said.
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You may already know it but you will need a new intake manifold for those Vortec heads. You can't use your Performer intake that was for your old smog heads because the bolt pattern isn't the same.
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thanks for the help guys, I knew I would need a new intake but I wasnt sure if the heads would be good with the lift of my cam... anyone know if I can still use the springs I bought for the old style heads with the vortecs?
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Not unless the spring pockets have been increased in diameter (which is a fairly common procedure). The Vortec uses a smaller diameter spring. Lorne