DubNova

Hey, I am ditching th EFI for the old school look and Tunning ease. I have a LQ9 with a comp Xr-275-hr cam (224/224 112 ls) its in a 67 nova with a t56 mag trans and 3:50 gears. Motor makes 410hp to the rear wheels. I am thinking dual plane with a 750 mechanical secondary Quick Fuel. What say you? Cam pulls from 1800- 6800 rpm Thanks...

ZONES89RS

iTrader: (25)

750 and performer would be perfect, let us know of it gains power, I bet it does.

hemiqc2003

I will be running a Holley 4150 750 cfm carb on an Edlebrock. I looked at the QF and Proforms but they are basically a Holley with anodized metering blocks and way more expensive.

Pop N Wood

iTrader: (1)

The quick fuels and proforms have added tuning capabilities (like screw in air bleeds and PVCR's), things that often need to be adjusted for a carb to work well with an LS motor. If you buy an old school double pumper you may needed to drill out these orifices and make your own screw in restrictors. Plus the quick fuels have teflon throttle shaft bushings, stainless butterflys, progressive secondary linkages and a secondary idle screw that is adjustable from the top. I had to modify my 4150 to a QF baseplate (the Holley unit was sticky) and my own screw in restrictors to get the tuning I needed. it would have been cheaper to get the QF in the first place.

And with your Nova I would go single plane. With an LS motor you will still have plenty of low-mid range torque and won't be compromising your top end should you go up in cam.

SteelCityMaro

mast manifold with a pro systems carb its a thing of beauty

ZONES89RS

iTrader: (25)

That gets heavy dollar per hp quick. Lol

SteelCityMaro

yea i love my mast tho, i agree with the 750 tho

underacheiver

750 double pumper fo sho.

3pedals

iTrader: (3)

I really like the vic jr and at least a 750,but I think a bigger carb could help top end

speedtigger

iTrader: (16)

I 2nd the quick fuel. I think it is the way to go.