Improving Stock Cylinder Head Performance - The 1947 - Present Chevrolet & GMC Truck Message Board Network

LT-102 · 01-08-2003, 10:55 PM

What can I do to my stock #487X heads to increase their performance? It's a 1971, 350 that has been rebuilt with a less than satisfactory cam. The heads were redone at the same time, but not with any special performance enhancements. I'm planning on kicking up the perfomance and going to Comp Cams camshaft with 224/230 duration, 477/480 lift and 110 lobe separation. 750 carb. Compression is about 9.4 to 1.

What can I have a machine shop do to the heads to better their performance? A best guess on what it would cost would be helpful. Thanks

01-08-2003, 10:55 PM	#1
LT-102 Registered User Join Date: Nov 2000 Location: Greenville, Oh USA Posts: 166	Improving Stock Cylinder Head Performance What can I do to my stock #487X heads to increase their performance? It's a 1971, 350 that has been rebuilt with a less than satisfactory cam. The heads were redone at the same time, but not with any special performance enhancements. I'm planning on kicking up the perfomance and going to Comp Cams camshaft with 224/230 duration, 477/480 lift and 110 lobe separation. 750 carb. Compression is about 9.4 to 1. What can I have a machine shop do to the heads to better their performance? A best guess on what it would cost would be helpful. Thanks

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