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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

recipe for 11.5:1 compression

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Old Oct 24, 2013 | 11:33 AM
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Default recipe for 11.5:1 compression
Is there a way to do this with milling the stock heads and not having to worry about ptv clearance on a stock piston and a cc306 with a 1.6 rocker?
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Old Oct 24, 2013 | 12:10 PM
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Yes................
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Old Oct 24, 2013 | 12:23 PM
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Yes. Running a stock block with milled heads and a cam more aggressive than the 306. No clearance issues.
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Old Oct 24, 2013 | 01:18 PM
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How much does the head need to be milled using a .026" head gasket?
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Old Oct 24, 2013 | 01:55 PM
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Originally Posted by 96s-10ss
How much does the head need to be milled using a .026" head gasket?
about .030" if your block hasn't been decked.
be prepared to do some machining on the intake manifold ends and slotting the holes to seal and match the intake ports.
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Old Oct 25, 2013 | 12:33 PM
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I really wouldn't suggest taking that much off the heads..The intake valve will be right at the deck of the head....and if you need to mill them again you will have to move the seat back or you will be cutting into it. Just my 2 cents though
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Old Oct 25, 2013 | 12:36 PM
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Originally Posted by draggin97s10
I really wouldn't suggest taking that much off the heads..The intake valve will be right at the deck of the head....and if you need to mill them again you will have to move the seat back or you will be cutting into it. Just my 2 cents though
Oh, I agree. He asked the question. If it were mine, I'd avoid taking that much off.
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Old Oct 25, 2013 | 12:47 PM
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Originally Posted by bowtienut
Oh, I agree. He asked the question. If it were mine, I'd avoid taking that much off.
I know and I wasn't criticizing you...just throwing it out there if he didn't know
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Old Oct 25, 2013 | 02:55 PM
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I agree guys. Maybe taking .020" off and a .026" head gasket will be sufficiant enough. Just want to bump the compression up a little to gain that little extra power.
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