1970 LS6 Engine Specs - Chevelle Tech
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post #1 of 3 (permalink) Old Feb 5th, 07, 1:55 PM Thread Starter
Join Date: Feb 2007
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1970 LS6 Engine Specs

I want to rebuild a 454 for my chevelle that has the engine specs from the 1970 Chevelle 454 LS-6. Does anyone have or know where I can get specs on the cam, heads, pistons, etc.?
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post #2 of 3 (permalink) Old Feb 5th, 07, 4:37 PM
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Re: 1970 LS6 Engine Specs

I think the heads where 290 or 291 castings square port.
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post #3 of 3 (permalink) Old Feb 5th, 07, 5:25 PM
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Re: 1970 LS6 Engine Specs

Heads are 291's
Pistons have a .270 dome
Cam is 242/242 @ .050 .520/.520 lift 114 LSA
called the "143" cam (last digits of the part number)
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