Holley 650DP

[Ernest]

Installed on an automatic car, im thinking about experimenting with one on my ZZ4.... will it be fun or be just another PITA since vacsec units are more of the norm?

 

[jcelk]

it sounds like a good test let us know how you make out

 

[bracketchev1221]

I don’t see why it would be a problem.

 

[Wraith]

I always ran a 750 vac on my car with a ZZ4(RPM air gap, 1 5/8" headers, 3.73 gears, built th350,1800 stall) but a buddy with a hotter ZZ4(LT4 hot cam, 1.6 rockers, RPM Air Gap, 1 3/4" headers, 3.90 gears, built th350) ran a 750DP on his auto car with a really loose stall converter and it worked well.

 

[bracketchev1221]

I should ask what is it replacing? I ran a properly opening 750 vac secondary and went to a 750 double pumper on my street car and ran the same et.