A little more Horsepower

[DAVID GAGNARD]

Just my .02 cents on the subject, and it's worth exactly that........so here goes..........

I think he is dead on with a 650 DP... I've used at least 6 different carbs on my 350hp, 351-W in my 65 Fastback (ranging from 600cfm to 770 cfm) and the best results were with a very old, third hand Holley 600 DP I rebuilt.... I had a custom built Holley 750 built by someone that is nationally know and it was without a doubt the worst peice of junk I ever spent the better part of 500 bucks for, it is now the most expensive paper weight I'll ever own!!!!!!!!!!!!!!!!!!!!!!!! all but ruined my motor, but that's for another thread some day........

Depending on your present exhaust, you could easily gain 30 to 50 hp with an exhaust matched to your present motor........

All total, with a carb change and exhaust, 50hp would not be out of the question and should be easy to get........

I've seen one small block stroker (420 cu in chevy) gain 55hp on the dyno by changing carb/carb spacers/timing only!!!!!!!!!!!!!!!!!!

Getting more out of your motor should not be a problem and only the dyno time will tell, seat of the pants doesn't always tell the truth............

Sounds like you have a knowledgeable dyno guy willing to work with you, use him and chances are he'll get the most out of your engine for the least amount of money right now.......

314hp at the wheels would come out to around 370hp or so at the crank and for your set-up, that ain't bad, IMHO of course......Better exhaust/better carb, some tuning and you could easily have 400hp or more, and while those numbers are not earth shattering, there are pretty stout for a 351-W that you can cruise around town everyday with......and if your car will hook-up the rear tires, you'll outrun 95% of anything you come up against on the street..........

David

[patrickt]

Fastd, I'm with David on the smaller carb preference. In fact, I run a Holley 750 (4160) on my FE and I've got a hundred cubes on you.