Holy cow George. You are probably right. Dang, I keep running in to this all the time. My brakes ain't the same, my anttena is differant, my clock is not lock any of them. I mean I like that about my car and all, but when it comes to giving advice and stuff, I can't be sure of anything because so much is differant on my car.
And what if I have to replace a broken part or something?? I will probably have to have it custom made by some machinist in Lithuania who will take fourty years to make it.
DOH!!!
quote:Originally posted by mikee:
I have a 735 cfm on the shelf and planning to install this soon. What jettings would you recommend on a stock engine?quote:Originally posted by cuvee:
Dont leave out the older 4150-735cfm, from the 390-428 engines.
Sorry it took so long, I was out of town... My engine is not stock, but I think my carb. had 80/74. The engine runs great but I think its running a little rich? Will try 78/72 when it gets warmer.
Mikee, what's the number on your 735?
Thanks
John
Thanks
John
From what I have read most Pantera GTS in the UK were delivered with Holley 650cfm double-pumpers.
Ah, thanks Rapier. So it is a 650 then? Cool. It has an electric choke and mechanical secondaries. That much I can tell by looking at it. So I got me a 650 cfm, special built, ain't no parts for, carburater. Well what do ya know. I am special after all. 
If its the original Holley it won't be anything unusual.
There are several different 650CFM Holleys.
I'd guess at a 4777 as that is a 4150 series 4 barrel double-pumper.
You should find the number stamped on the side of the intake - near the choke flap.
There are several different 650CFM Holleys.
I'd guess at a 4777 as that is a 4150 series 4 barrel double-pumper.
You should find the number stamped on the side of the intake - near the choke flap.
Yep Mr. Rapier. The number was 5534. Which I can't find anywhere in any of their literature, both past and present. So if I ever need to get a rebuild kit, I will have to call Holley and beg and plead with them. If I am pathetic enough they may just have me send them the carb for them to rebuild. Or maybe they will just laugh at me and give me a good price on their latest, handiest, dandiest fuel injection system for race cars. Either way, it just proves that owning a Pantera is indeed, an adventure. 
Weird,
I can't find that in the list either.
Tried Google too, nothing, though I can find many mentions of model 1850 or model 4777.
I've put a topic in the European forum to ask the guys what model Holley was fitted to european market Panteras.
I can't find that in the list either.
Tried Google too, nothing, though I can find many mentions of model 1850 or model 4777.
I've put a topic in the European forum to ask the guys what model Holley was fitted to european market Panteras.
Thank you Mr. Rapier. That was a really nice thing for you to do.
quote:Originally posted by johnk:
The new carb and accessories arrived today. Man, when Holley says the HP carbs are wet tested, they mean it. Carb was wet right out of the box, and good thing I wasn't looking up the pump nozzles when I winged the throttle on the work bench, pumps were still full and the bowls weren't completely drained. Neat carb with alot of nice features right out of the box. We'll see how well it works..
John,
How did this carb work for you? Still happy with it? Did it require a lot of adjustment or changes?
I may have the oldest Holley (4777)650 DP. I put it on in 1974 at the same time I installed my dual point Mallory Ign. The performance increased ten fold while the mileage went south...
Going on soon, list number 9379 750 DP, four idle circuit, annular discharge boosters, 50CC pump, 68/75(for now). air bleed holes drilled.
Don't kow how I missed this thread..
This spring I had my Pantera on the dyno to tune the carburetor, and we kept working at it until the mixture was correct for each test scenario. The general trend was to make things leaner. This is the result:
Holley 4778-2 700 cfm double pumper
Primary: jet 65, squirter .028, power valve 6.5, cam 466 (black)
Secondary: jet 76, squirter .028, power valve n/a, cam 466 (black) hole #2
Matching numbers block, 4v heads, Edelbrock manifold, upgraded valve train.
I'm now pleased with the throttle response, and the car no longer smells of gasoline all the time. We also found a few horsepower, with the final result being 335 rwhp. If what I read on another thread here is correct (20% loss through the drivetrain), this is approximately 415 bhp at the flywheel.
It could probably still be made better, but I'm not going to bother, because I'm in on the group buy for the quad Weber IDF manifolds. I'm looking forward to having those on the car.
This spring I had my Pantera on the dyno to tune the carburetor, and we kept working at it until the mixture was correct for each test scenario. The general trend was to make things leaner. This is the result:
Holley 4778-2 700 cfm double pumper
Primary: jet 65, squirter .028, power valve 6.5, cam 466 (black)
Secondary: jet 76, squirter .028, power valve n/a, cam 466 (black) hole #2
Matching numbers block, 4v heads, Edelbrock manifold, upgraded valve train.
I'm now pleased with the throttle response, and the car no longer smells of gasoline all the time. We also found a few horsepower, with the final result being 335 rwhp. If what I read on another thread here is correct (20% loss through the drivetrain), this is approximately 415 bhp at the flywheel.
It could probably still be made better, but I'm not going to bother, because I'm in on the group buy for the quad Weber IDF manifolds. I'm looking forward to having those on the car.
Finally made a choice on the carb for 1717 so this thread is getting bumped so I can have a reference.
Jeff
Jeff
Use a Infrared Temperature checker for Heat from the Cylinders. I found one cylinder cold and never new it. Spark plug Wire was broke at the crimp. You can ckeck the Heat from each cylinder. Then you will know which is rich or lean by Temp.
I like my Edelbrock, It's super reliable, and fuel can sit in the float bowl and not damage float gasket. Ten thousand miles so far, and no problems at all!! 