opinion on carb issue

[native1]

Everyone with that carb on a Roush has trouble with hesitation. I had the same problem with my 427 srtw. We played with the 770 street avenger for a long time trying to solve the problem. Got better but always had a hesitation. I would recommend using the 770 as paper weight and buy a 750 or 850 cfm holley 4150hp double pumper. Make sure to get it without the choke, it is for sissies. It was well worth the 900$ to me. Zero hesitation, very smooth. Should also be good for a few ponies.

[wtm442]

Originally Posted by native1

buy a 750 or 850 cfm holley 4150hp double pumper. It was well worth the 900$ to me.

I would suggest that you should try making adjustments to the existing carb before buying a new one. No matter what Holley carb you buy, its performance can be improved with a little tuning. If you do not want to learn some of the basic tuning steps, find someone that will do it for you. If the tuning goes nowhere other than pulling hair out of your head, its time for a new carb.

Of course, you could always switch to an EFI setup and make adjustments using a computer.

I would definitely go back to Roush and see what carb they are presently supplying/suggesting with your motor in a very light car.

On a side note ... regarding the $900 carb ... I remember buying my first Holley carb ... an 850 double pumper, and was it expensive. $175.00
Boy, that was a lot of money in 1970.