Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#1
12-28-2006, 03:37 AM
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Re: L-78 engine Birth date
GM also had a marketing dilema. The L78 was originally listed as making 425 hp at 6400 rpm in 1965. Then the L72 came along and that made 425hp at 5600 rpm. So the L78 was dynoed and became a 375hp motor at 5600 rpm. This arrangement gave Chevy two distinct levels of hp they could offer the public.
__________________
Dean 
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#2
12-29-2006, 05:23 AM
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Re: L-78 engine Birth date
-----If you guys are talking strictly about 1965 Chevelles and 1965 Corvettes the difference is the cam, I believe. I dont have the specs in front of me, but the 201 Chevelles all came with a hydraulic cam and lifters while the 425 Corvette came with a solid cam and lifters. The 65 Chevelle 396 was the only instance in the history of rat-motors from Chevy that they put big-port heads and intake together with a hydraulic cam.
-----After 1965 alot of what you all are saying above is true.....Bill S
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