Carb to small?

I think my carb may be to small? Just got engine back together & took the car to the track & it would only run a 6.95 @ 98 mph leaving off trans brake at 3000 rpms and 60 foot time of 1.450. 477 ci zero decked ,mildly ported dove heads, 615 589 lift 294 304 dur cam, 11:7 to 1 compression , c6 with 4200 stall, 456 gears, 830 holley dp carb, porto-sonic intake. Did not have a chance to get car weighed yet,the car is a 1970 mustang coupe with fiberglass front clip & front window is lexan. I hope this is enough information?

yes, change to a 1050 dom,and get a single plane intake,

PortoSonic is a single plane but I agree it needs a 1050

isnt it a dual port/runner?

The one I had was a single plane and although it wasn't as good as victor,it works well on a low volumn iron head.

BOSS 429 wrote:isnt it a dual port/runner?

No a port-o-sonic is an old offy race single plane.

A Victor 4500 and a 1050 is a much better choice or Even a TFS Single plane.

Times aren't hoorible for the parts mentioned and if its not sorted out yet.

The port-osonic intake I have is a single plain, but I will try a 1050 & see what happens. Thanks for all the help along the way with this engine build all of you guys have went above & beyound with helping me.

If the carburetor you're using now is tuned reasonably well I doubt it'll ET any better with a 1050 but it's worth a try if you have one to use.

BOSS 429 wrote:isnt it a dual port/runner?

?




years ago before victors id say ok, this was a good manifold, but for flat on the floor racing, no