650 dp vs 750 dp in a 408

mderoy340 said
650 has a bigger signal and better butt dyno on the street. Nothing wrong with that.

I agree. On the street, (100% street driven) I purposely run a carb a little small. The extra 10/20 hp is not really missed at all but the increase in throttle response is great.

Kendog 170 said
I've been trying to decide on a Eddy 650 or 750 for my 68 340 Eng.20 over, 10:5 Comp,Eddy heads, air gap intake, Stock exh.manifolds with 2.5 Exhaust ,4 spd. , 323 gear. I thought 750 would be too much but others say it would be fine. Car is a driver. Being a driver I'm still leaning toward 650.
In your case have you run them both in the 1/4 mi. ?

This would be my near perfect example. I don’t know what you have for a cam, but if it was a small street cam, I myself would do the 600/650. Yes the 750 would also be just fine.

On a racing a car or a monster street striper, ummmm, Yea, different story. IMO, spacecowboy has it going on there. Let it breath deeply! Burn don’t think his build is like the OP’s for some reason.... LMAO

SPACECOWBOY said
My race fuel 414 has fastest et with a 950.