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04-08-2005 04:15 PM #1
CHR Member
- Join Date
- Dec 2003
- Location
- Festus
- Car Year, Make, Model: 75 GMC C-15
- Posts
- 342
305
see, now in my opinion..if your gonna spend that kind of money on a 305 to make 334 CI.... you may as well buy a whole differant engine...just my opinion. actually 305s are over square anywaywith its small bore...than add even more stroke, not a great combo75 GMC C-15 factory 454, automatic, lowered
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Welcome to CHR. I think that you need to hook up your vacuum advance. At part throttle when cruising you have less air and fuel in each cylinder, and the air-fuel mixture is not as densely packed...
MSD 8360 distributor vacuum advance