Compression ratio?
#1
Compression ratio?
what would the highest compression ratio that i can run on a basically stock engine. im trying to plan a rebuild with a little more. i was thinking ported gt40p, .0040 over, stock cam or somthing smaller, and an eldebrock performer intake and carb setup. and i will be using pump gas. with the higher the compression ratio the higher grade gas, so i was wondering how high should i go to be safe and still use pump gas
#2
RE: Compression ratio?
ORIGINAL: djcondo
what would the highest compression ratio that i can run on a basically stock engine. im trying to plan a rebuild with a little more. i was thinking ported gt40p, .0040 over, stock cam or somthing smaller, and an eldebrock performer intake and carb setup. and i will be using pump gas. with the higher the compression ratio the higher grade gas, so i was wondering how high should i go to be safe and still use pump gas
what would the highest compression ratio that i can run on a basically stock engine. im trying to plan a rebuild with a little more. i was thinking ported gt40p, .0040 over, stock cam or somthing smaller, and an eldebrock performer intake and carb setup. and i will be using pump gas. with the higher the compression ratio the higher grade gas, so i was wondering how high should i go to be safe and still use pump gas
#3
RE: Compression ratio?
yeah i hit the zero once to many. why do the alum head allow higher compression? Also wont i notice a resonable differeance with the raised ratio? sorry the first mesage was all over the place
#4
RE: Compression ratio?
aluminum disipates heat quicker than cast iron and thus is less prone to hot spots in the cumbustion chamber.....spark detonation is a result of excessive cumbustion chamber temps..and it depends on how much you raise it vs how much seat of the pants feel you will notice.....I went from 9.7 to 11 to 1 and there was a huge difference but going from like 9 to 1 to 9.3.. not really noticable
#7
RE: Compression ratio?
You could take a pair of stock E7s, have thumper work his magic on them and get with a cam grinder like Jay Allen and have parts which played together nicely. I'd rather spend 1000 bucks once and have it run great then spend 750, have it run not so hotand then have to redo it for another1000. Cheaper/better to do it right once.
Matt
Matt
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uberstang1
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09-20-2015 06:42 PM