670 vacuum secondary vs 650 double pumper

RustyRatRod said

20 cfm.

Seriously, I think the double pumper is a better match. 4 speed, good gears. It's a no brainer.

Click to expand...

Agree,

99% Street Car, with a 4-Speed Manual Transmission and 3.91 Gears.

* Holley 0-4777 '650' Double-Pumper.
Series #4150
Throttle Body Sizes ... 1.688" x 1.688"
Primary Jets ............ .071"
Secondary Jets ........ .076"
Power-Valve ............ 6.5
Primary Nozzle ......... 25
Secondary Nozzle ..... 25

Easy to change Jets,