Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#1
10-29-2017, 03:58 PM
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I just rebuilt the 427 in my Camaro this summer and went from 9:1 to 11:1 with total timing at 35 degrees and all in my 3500. I run alcohol free 91 octane and it's doing fine.
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Freddie 1969 Camaro RS/SS396 (427) 4 speed 
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#2
10-30-2017, 09:42 PM
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L78 rebuild...
These cars are all about...I repeat, all about the 11 to 1 compression. Lowering the CR would be a mistake...just find the right fuel and enjoy.
A stock rebuild should include a careful review of the valve train components...they were the weak link and one of the reasons we have so many CE motors in cars like this. As mentioned make sure the deck stamp is protected...take photos for insurance and make the shop understand you don't want it removed. Lots of times these engines actually had less then the advertised 11:1...so you may find a few extra ponies in checking the CC's on the heads and confirming the ratio. A thorough professional job will protect and value to the car in the years ahead. -wilma
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02 Berger 380hp #95 Lots of L78 Novas Join National Nostalgic Nova! 70 Orange Cooler 69 Camaro
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#3
11-14-2017, 07:30 AM
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L78 rebuild
Hello all:
Thanks everyone for your comments on my L78 rebuild. I will rebuild the engine to all factory specs including the 11:1 compressiom, cam etc. The engine is completely stock as it came from the factory with all factory components. Anxious to get it back on the road. Absolutely no decking of the engine block. Joe
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