carb for automatic

[jaspermaggie]

I have a 355 10.3com, 284 cam, 195 heads, rpm intake, th350 3000 stall. 370 rear. 3500lb. I have a holley 750 vac and people say I should try a double pumper hp. It is a street strip car. What do you think. Stay with what I have get a 750 or 650 holley hp?

[Moparious Maximus]

If you are comfortable with the vac secondary carb and its working for you, theres no sence in messing with it, but if you are like most guys (and me), you probably want DO want to mess with it. haha.

I'd say try a double pumper, but thats just me. I think they make more sence to tune too.

[HPDRIFTER]

You might borrow one from a friend, to try before you buy.
But like someone said; if what you have is working, do you really need
to change it for how you're using the car?

[jaspermaggie]

You are probably right. I don't know why I cant leave stuff alone. You probably all know how it is.

[BillySS]

My street Monte SS curently is running low 12's 12.06 to be exact. I have the 870 Street avenger vac secd. carb. I have the same prob, people telling me to put a mech carb on and my ETs will drop and get more consistant times. I'm very happy with the way my car runs even though I want the 11's soooo BAD. BTW 125 shot is in my future.What do you guys think I should do?

[1320john]

I have a 87 monte 383 I went from a 3310 vac to a 4779 and the car went a 10th. The 60 stayed the same 1.61. I only switched to see if it would run closer to the number and it did.
383 6'' rod 180 heads 10.8 comp 294s comp cam 1.6 rockers victor intake runs 11.90@110

[BillySS]

Well I ordered A new Barry Grant Mighty Demon 825. Lets see what happens !

[jaspermaggie]

Got my 750 street hp today and it will be ready for the morning.

[jaspermaggie]

Good god it is way different. Car takes off like I thought it should. Traction is now an isue. I had to go up alot on the pump shot 42/45 has a 4.5 pv. The jets out of the box will work 75/80.