hogie roll

Jamsf1984

Would you go 4500 intake and carb or 4150 intake with 4500 carb seems to be some discussions on that as well

articfriends

iTrader: (1)

You wont see any measurable gain going from qf 1050 to a dominator. I tested them back to back on a 660-685 hp bbc on dyno, zip, zilch. As far as intake, add a 1" open spacer and 1" blended 4 hole spacer on top of that or similar if you havent already and have room. Recently did this on a 555 on dyno, it picked up over 20 hp and similar tq. Exhaust, buy best exhaust you can afford, Smitty

Jamsf1984

Thanks for the input, what intake where you running just curious sounds,like the victor jr is better than stock dart single plane

articfriends

iTrader: (1)

The 555 i recently dynoed had a dart open plenum (from what i remember), (i didnt build it) dominator 1150, i think afr 335s, big solid roller and compression. Came in at 728 hp, carb spacers, timing, and jetting took him to 820 but were talking 750 lift solid, 13-1 on race gas, was a mud truck motor. His jetting was burn down lean when we started, he had taken power valve's out and went DOWN in jetting so it gained alot just from giving it fuel but it like the carb spacers/extra plenum volume, fwiw, Smitty

articfriends

iTrader: (1)

Jamsf1984

Ohhh dam went down after pv removal way lean, do you generally try to run pv on marine build or remove i know with street car we try to keep them, also do you know about where ballpark jetting would be on a setup like mine with that q1000 qf carb, im gonna pull mine tonight and look i think it was stock jetting but we will see thanks

Jamsf1984

Looks like stock jetting is 82p 88s and 4.5 pv in front

Jamsf1984

Also im running a 25p mirage plus how do you feel about a bravo 1 instead on the bajas

articfriends

iTrader: (1)

id leave the pv, make sure at idle and light cruise (2800 to 3200) your vacuum is above 5" so pv is closed, if not, go down further but most boats are in 70 map territory there ( 8 or 9" vacuum). Id prob start w 84 or 85 primarys and 96 secondarys, watch plug 1, 7 and 8 closely , color after wot run and jet down accordingly. If #2/6 look fat, dont start pulling jet out to make them happy as they are going to run richer just by nature of intake/cam