Join Date: Mar 2007
Location: Fort Worth, Texas
Re: Power Gain question Ford FE 390
Yep, deal with the exhaust first. Unless your vehicle came with factory headers, the exhaust will always be the most restrictive thing in a stock engine. If you replace the intake/carb first, you can introduce more fuel/air, but it's got nowhere to go. Stock exhaust can't even keep up with what your current 2bbl setup can supply.
Whenever you want to increase fluid flow in any device, always start with the outlet and work your way back. That's just a basic engineering principle.
1964 Galaxie 4dr 351W Daily Driver, 1967 Galaxie fastback 460,
1969 Montego MX 410, 2 x 1977 Grand Marquis 460 & 400, 1979 F150 400
Last edited by Tex; 10-05-2010 at 11:42 AM.