NYH1
Tacticle Chainsaw Operator.
Anyone have any experiance with these carbs? How well do they work on mildly built street/daily driver 350/383 small blocks?
Holley's web site.
Holley's web site.
The only experience I have had with Holley carbs isn't good. It is possible that this one might work really well for you.
If it was me, I would stick with the Q-jet. I understand them, and they have treated me better. To each his own as the story goes....
Ditto for me. I have found Holley's to get worse fuel mileage and had fits with power valves for awhile. Consequently, I really got into the QJ's for a time and had 75 or so. The QJ has much more adjustability than any carb ever made. Or that's my claim anyway.
edit: a close second for a QJ would be an Edelbrock 1406. They do ok.
That sure would look sweet. I'm looking for derivability though, I've heard horror stories about multi carb set ups!Why dont you run 3 dueces might be hard to get tuned just right, but it sure looks cool.
I've always had good luck out of Holley. Once I learned how to tune them (acc pump, squirter, power valve, jets, and pump cam). If I was looking at a new carb for a stout small block I'd have to consider a Demon, heard a lot of good things bout them. http://www.barrygrant.com/
Yes it has vacuum secondary's.Sad to hear of all the people with Holley troubles.
Raced them for years, the most tuneable carbs. ever designed.....IF you understand them.
HP productions published an excellent book on how to tune / modify Holley's, essential reading if you want to tune them.
The 650 spreadbore should be an excellent street carb for your small block, better driveability than a double pumper.
Is it a vacuum or mechanical secondary?
Paul
I just read your other post. I would go with 670 holley street avenger for the 383 for just driving around or 750 holley if you want max hp. If your running an auto with low gears 3.73 or numerically lower stick with a vaccum secondary carb. If you have a 4spd and 3.73 or higher, go with a double pumper.
The Performer RPM is an awesome manifold capable of supporting an rpm range to 6500rpm. I have a Performer RPM on my 350 .060 over in my 69 camaro. I'm running a decent cam .480I/.494E lift and 228I/234E duration at .050 and Trickflow aluminum heads. I currently have a 600cfm edelbrock carb and its jetting is maxed out. My car runs fine, but its a little too small for my application. I'm going with either a Holley 650 or 750 Hp series carb. I don't need the choke or air horn as I want max horsepower.
Have your considered gm vortec heads since your getting a new manifold anyway? S/R Torquers are sort of an updated version of old style cylinder head. Actually S/R stands for Stock Replacement. Vortecs would probably gave you more power and they have a much more modern fast burn combustion chamber design. They are $300 per head and the lift of your cam should work.
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