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: L-65 What cc are the stock heads? Fred Mertz Dec 24th, 06, 10:33 PM The long block is all stock except for the cam. The L-65 had a 9to1 cr in stock form. What cc. are the stock heads? Trying to decide if I want to build on this short block. "HD" code pdq67 Dec 25th, 06, 08:05 AM I figure 76 cc chambered heads with .020" thick shim headgaskets and -5 cc 4-notch flat-top pistons create a 9 to 1 CR.. 64 cc heads should put you right around 10 to 1 like the 295/300hp/L-48 engine. pdq67 zdld17 Dec 25th, 06, 10:58 AM I figure 76 cc chambered heads with .020" thick shim headgaskets and -5 cc 4-notch flat-top pistons create a 9 to 1 CR.. 64 cc heads should put you right around 10 to 1 like the 295/300hp/L-48 engine. pdq67 Pdq, would you say that the 4 notch piston is equivilent to Trw 2256F? Some books I look at tell me 5cc and my older books say -5. These pistons are for a 350,, The question just reminded me of something else. pdq67 Dec 25th, 06, 11:38 AM I don't know piston part numbers, so just as long as it is a stock type, about .025" down-in-the-hole 4-notch, flat-top piston, I figure you will be fine.. I detail this all out like this b/c some are selling rebuilder pistons that can be a down-in-the-hole of .050" and deeper b/c they figure guys will plane their warped decks smooth by like .025" or so.. So watch this... pdq67 travis Dec 26th, 06, 08:28 AM What is the casting numbers on the heads? Fred Mertz Dec 26th, 06, 03:20 PM I will check when I can. Not alot of time available this week. I will let you know. | ||