Edelbrock performer and 750???

Are you running MSD ?
If you are, check your RPM limiter chip/plug on the bottom of the MSD unit. It could be a 5000 RPM.

Another possibility - where is your electric choke taking juice from? spicing it into the coil will act as a built-in rev limiter.

I run the Performer and a Holley 650 DB with a mellow cam. (300 hp @5000 rpm) And it runs to 5800 with no trouble. Is the exhaust clean? Before I changed the jetting, my car wouldn’t pull very good either.

When I bought my car, it had the same problem.

First I found that the secondaries didn't open all the way. The Pantera needs a "special" throttle cable bracket to allow the butterflies to fully open.

Second, the choke wire was connected as Charlie described already.

Both corrected gave a substantial improvement.
Check these two areas, then reply, the "collective" will continue to help you.


Chuck

I have no elec choke, no msd, and what do you mean about the exhaust being clean.throttle seems to open all the way.
Thanks Guys

Its not the manifold. its either carb/fuel system, ignition or cam/valvetrain.

hard to troubleshoot a vehicle via e-mail. The previous posts have offered good advice. What do you mean the carb "SEEMS" to open all the way. Have you visually verified this? Are your exhausts very "sooty", indicating an excessively rich mixture?

George

My exhaust is the one that looks like 4 glass packs, and it does seem to run rich. hmmm

George,
I had just bought the 750 holley and installed it, but never tuned the carb,

Need to verify the throttles are opening 100% & adjust the carb: idle stops, idle mixture, fuel bowl levels, etc. May even need leaner jets.

Holley sells a book written by Mike Urich that is excellent for guidance in tuning the carb.

Holleys are very adjustable, and once it is adjusted for your engine, you'll be very pleased.

Then, there's the ignition settings ...

Happy New Year

George

No cam card or specs, but the engine really just falls off at 5000 rpm, doesn't die just won't go past that. it doesn't pop

Is your ignition set up correctly? Initial advance at 12 to 14 degrees BTDC. The nameplate on my 71 says 6 degrees BTDC. I set it there and my car did what yours is doing. Also, is the mechanical advance working?