Whats the redline on a 360? Mines been rebuilt with a mild cam and holley 4-barrell truck avenger carb.

 

13-14k Maybe? HaHaHa I was wondering the same thing.

 

My 74 F-100 w/ 360 stock when I first got it would only turn about 3,800-4,000rpm.

I put a crane rv cam,lifters and a set of 390 heads on when I pulled the motor to replace the clutch and now it will turn about 5,500rpm but I don't push it past 4,000rpm.The valvetrain of these motors aren't designed for high rpm their more for low rpm pulling power.

Dan

 

I took my 390 to 6500rpms without valve float. Stock with a 2bbl

 

You can always use Holley's time testedcarb sizing formula.


RPM = (CFM X 3456) divided by CID

 

6,500 out of a stock 2bbl 360....that is something....I have one that sounds like it does the same. I have no tach, but I'm pretty sure she goes over 6K. Mine has a 2bbl too, stock as a rock, except for the headers I robbed from the 390!

 

Bad tach or BS. In either case it ain't gonna happen.

 

He said the valves "didn't float" when they came back down and hit the water in the stream 20 yards away LOL

 

 

I dont think there would be any way you could get it up to 6500 with out fu**in something up. Mine sounds like its at all its got at 4000.

 

A stock 360 with single exhaust and a 2 barrel is totally done by 4000. The book says that 215 hp @ 4400 but that was in the days of flywheel horsepower and dyno runs with dual exhaust while the real thing had single exhaust. Even when I changed over my 1968 360 to duals the other 400 rpm showed up. But the 2 barrel is the limit on revs after the single exhaust.

On a side note, back in the dark ages the local roundy rounders has a limit of 400 CID for one of the classes. Of course the GM weenies had the 396, but a 390 wasn't really competitive. So the smart boys took a 427 and put a 361 truck crank (after re-machining the snout) in the 427 with special roads and/or pistons and came up with a 393 that would rev quicker and out rev the 396 motors.

 

Just set the tach on the 4 cylinder setting, then ya can rev em to 9,000 RPM!!!!!!!

 

I should have said that i had a Holley 500cfm 2bbl and true dual exhaust. What I meant by stock was cam, intake, ect, athough i do have 64 hipo heads.
BTW, I was going by the tach.

 

2500 Lol.

 

HP heads are not what normal stock 390s run. The stock 390 valve springs are done by 6000 for sure, most before 5500.