Unique 500+ Cubic Inch Engine Swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jrainman · 11-15-2019, 12:24 PM

[QUOTE=kwmech;8627468]From about 1973 and newer all the big cube engines were facing lower compression and retarded cams to meet emission requirements. I think the 454 got down to about 7.5 to 1 compression. Doesn't take much to wake them up. Jump them up to about 9-1 and add a mild cam and make those cubic inches come alive. Night and day difference[/QUOTE

EXCACTY Sleeping giants just waiting to be woken up , with little effort. and a great $ to HP gain value.

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11-15-2019, 12:24 PM	#24
Jrainman Registered User Join Date: Jul 2015 Location: North East PA Posts: 682	Re: Unique 500+ Cubic Inch Engine Swap [QUOTE=kwmech;8627468]From about 1973 and newer all the big cube engines were facing lower compression and retarded cams to meet emission requirements. I think the 454 got down to about 7.5 to 1 compression. Doesn't take much to wake them up. Jump them up to about 9-1 and add a mild cam and make those cubic inches come alive. Night and day difference[/QUOTE EXCACTY Sleeping giants just waiting to be woken up , with little effort. and a great $ to HP gain value.



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