I have a 79 f150, 460bb with 650cfm Holley 4 barrel, Edelbrock 460 Performer intake manifold, dual Glasspack exhaust with 2in pipe. Everything else is stock. It just feels like it's lacking power. Is my carb too big, or is there any thing else that might be causing this?

Thanks

 

There is nothing wrong with that size of carb for your motor. Have you recurved the dist ? Is the cam timing set at zero ?

 

Put a 3" single on it with a high-quality "y" as far forward as you can and a decent straight-through muffler.

 

I personally haven't recurved the dist, the p/o may have. Is there any way to tell?

 

You'll have to take apart the distributor to the point at which you can see the two advance springs. There should be a light spring and another that's a little more bulky. I'd personally just send it off to a professional (guy who knows what he's doing) distributor recurver and have them mess with it.

Carb should be good but if the truck is a dog off of the line or doesn't have good throttle response then you may need to make some adjustments to the accelerator pump system.

I'd go with a dual 2.5" exhaust but that's me. That and headers of course.

 

Take the vac advance hose off the dist. and plug it. Rev the engine and using a timming light see if it advances. It should go past 30 degrees(12 initial setting) if it doesn't then that is part of your problem. Next is the 2" exhaust. 2" is too small especially if it has lots of bends. Try jogging while breathing only thru a straw... same deal. My dist. had no mechanical advance and the truck just didn't move like I thought it should. Bought a rebuilt one and wow what a difference. Right now my 460 is stock so I am gonna wait on any dist. work until after I build a new motor.

 

I agree that the mechanical advance is probably the culprit. I doubt it is the carb. I run a 600cfm 1850 Holley on an Edelbrock Performer intake manifold. I also run dual 2 1/4" pipes on it. It pulls strong from idle to 5,000 rpm. (I have not run it up farther than that.)