I sprayed a 300 shot the entire quarter mile to go from 8.30's to 7.80's in the quarter mile. This was in a 95 Firebird which I ran Top Sportsman with a NA 900hp 535 Pontiac at 2700 pounds. As mentioned earlier you need to spray it early to make any big gains. Don't try it without significant upgrades to everything. In my experience you will need a billet crank, excellent rods and a trans/rear end to match. Feel free to IM me if I can help and share my detailed experiences.
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