Is it alright to run at 3000-3400rpms

[southernk30]

I got a 6.2/sm465 (no overdrive) with 4.56's on 33's. Is it alright for me to be doing highway speeds like 60-65mph which is around 3200rpms. I read somewhere where the stock rev limiter is set way low, and that it can run at 3000-3500rpms all day long. I try to stay around 60mph but it sounds like it is screaming.

[Robyn]

The engine will do it BUUUUUUUUUUUUUUUUUUUT thats reeeeeeeealy pushing the Rpm up there for long term driving.

2200-2400 is far better.

That little creature has definately got to be howling at that rpm

[britannic]

I regularly ran my engine up to the governor (4100rpm in my case) with 33" tires and 4.56 gears and TH400 for many, many miles without problem.

YMMV, but with a good engine, they can easily handle the revs, it's not fuel efficient though, so I installed a TH700R4 to keep the revs down on the freeway, although I still used the full rev range to accelerate.

[NH2112]

I'm with Britannic. Running it on the rev limiter is noisy and not fuel efficient, but the engine itself doesn't care. I ran humvees all over Germany at speeds of 60+, no idea what the RPM were but they had 36" tires and 5.24:1 gearing between the ring & pinion and geared hubs. Whatever problems they had weren't the result of high engine RPM.

[CleviteKid]

As the others have said, the engine won't care, but your ears may get tired of the scream, unless you like to listen to Top Fuel Dragsters and Funny Cars as a way to relax. :D

[AJMBLAZER]

Go find some 35's or 36's to lower the rpms some more. Cheaper than an OD or higher gears.