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  1. Misc Nova Stuff
    Holley 12-801-1 fuel pump (red). I bought this new and have very few miles on it. Switching to EFI. $65 + shipping Holley 80770-1 Street Avenger 770 CFM carburetor. Taken off our running vehicle to install an EFI system. Ran when removed. Includes the braided line, AN fittings, throttle...
  2. Drivetrain & Performance
    Hi! I recently installed an all new MSD 6al ignition system on my car. I also put an msd ready to run distributor on it aswell, Which has the mechanical and the vacuum advance on it. When i Put the new distributor it I reset the timing to 0. then not realizing what the mechanical advance and...
  3. Drivetrain & Performance
    I'm having issues with a Holley 650 double pumper. Engine seems to flood or not start. It's was on the car when I bought it and it's given me problems since day one. Part of the problem is that I'm new at tuning a carb. The other problem is the carb was hooked up incorrectly, probably missing...
  4. Drivetrain & Performance
    Does anybody have experience with Holley support? I have called them for 3 days straight right when they open and left messages for them to call me back and I have heard nothing. This is after spending over 2 hours on hold trying to talk to someone. Is this a lost cause? Am I doing something...
  5. Drivetrain & Performance
    Hi All, I'm new to this site and hope I'm posting in the right area. Just bought my first Nova (62). It runs great (400sbc). The suspension is original and as such I'm venturing down the path of replacing the front end. I pulled off the carb today and it's stamped LIST-4781-2 1775. The...
  6. 1st & 2nd Generation Chevy II/Nova's
    Anyone know where I can find an inexpensive Holley 390cfm carb? I recently purchased an offenhauser 4 barrel set up and was told I need this style carburetor. Any help would be great. Also willing to swap for a recently rebuilt Rochester 1 barrel carb. Thanks in advance:yes:
  7. Drivetrain & Performance
    I have a 79 Nova Custom .305. I took off the stock intake and carb and replaced it with an edelbrock aluminum intake and Holley 650 cdm carb. It ran for about half an hour after I got it all back together. I spun it around the block and it felt and sounded great. Later that day it started...
  8. 1st & 2nd Generation Chevy II/Nova's
    Is anyone running the Holley Hi Ram on their LS swap? I have a 2" cowl hood and ordered the TCI Pro-Touring front end. I've google searched and searched on here to see if I could find anything, but came up empty handed. I'm wanting to know if it will clear before I order an LS crate engine with...
  9. Drivetrain & Performance
    Guys , can you help please. Numbers on my carb are 4781-6 which indicates it's an 850 Double Pumper but what what does the 6 indicate? I have been on the Holley web-site and most numbers go up to 4781-5 but I cant find anything indicating 4781-6? Any help would be much appreciated, thanks.
  10. Drivetrain & Performance
    I currently have a stock 250 L6 and want to throw on some headers, an offy 4bbl intake, and a carb. I have heard the 390 Holley is best, but what model number carb works best for this application?
  11. Drivetrain & Performance
    hey guys, just got a new edelbrock rpm air gap for my 74 nova, its in but when i went to put back the alternator, the bracket wont reach the top of the water neck? do i have to modify this or get a new one? and the throttle linkage doesnt fit either. i got a holley 670 street avenger with a 1"...
  12. Drivetrain & Performance
    hey guys, i wanted to get a bigger carb for my 74 nova, and my dad went ahead and ordered a holley 670 street avenger and an edelbrock high rise manifold, i dont have the product number but i have two problems; how much space do i have for a new air cleaner? and what size air cleaner? im trying...
  13. Drivetrain & Performance
    Plan on upgrading my stock 1975 Nova SS's 350 two barrel to a four barrel setup. Already purchased a Holley Street Avenger 570 cfm and plan on mounting on an Edelbrock Performer EPS or Performer Air Gap manifold. Anybody have a similar setup or a better setup before I finish ordering parts...
  14. Drivetrain & Performance
    Dumb question! Currently have stock 2 barrel on my '75 350. Exhaust is Hedman headers to 2.5 inch Flowmasters. I plan on swapping to an Edelbrock Performer manifold, and PROBABLY a Holley Street Avenger 570 4 barrel. Engine currently has an EGR valve in place. Do I need to keep the EGR...
  15. Drivetrain & Performance
    Looking to upgrade to a 4 barrel on my basically stock 1975 with a 350. Anyone know the CFM rating on a stock Rochester 2 barrel? Wondering if a switch to a Holley Street Avenger 570 cfm or an Edelbrock 600 is going to be a noticeable upgrade. Thanks.
  16. Drivetrain & Performance
    im running a procharger with a holley mechanical fuel pump. i believe the fuel delivery will be monitored by making the fuel pump boost sensitive. does this mean i wont need a regulator since its not electrical? :confused:
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