Dyno results.. guys with the 4barrels get in here
i just dyno my truck
it has the offenhasuer intake dynomax heaers and a new 390
it had 148hp 283tq
but it was lean very very lean
i think the ****ty gasket that came with the intake is leaking
has anyone ver had to up jet the 390
what are your 390cfm's tuning setups