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tom call

10-29-2007 02:15 PM

86 272 formula prop help?

Is there anyone out there with one of these old school rides it is an ls 272 formula 1986 and i am running a 14.25 diam prop 21 pitch and it has alpha one drives 1.50 gears with twin 350's in it trying to find the right prop for it it will run 49 mph at 3900 wide open any answers on this thanks

formula 382 sr-1

10-29-2007 05:08 PM

Quote:

Originally Posted by tom call (Post 2321086)

You need a 19 pitch prop tp bring up your RPM . I had a 87 272 with 350 mags 19 pitch props 55 mph at 4400 rpm.:ernaehrung004:

tom call

10-29-2007 10:08 PM

formula

what dia prop did you use 14.25 ?with 19 pitch prop

formula 382 sr-1

10-30-2007 06:20 PM

Quote:

Originally Posted by tom call (Post 2321656)

what dia prop did you use 14.25 ?with 19 pitch prop

14.25 but a 383 with 425 hp with a 23 pitch 14.25 will get you to 69.8 on GPS @ 5100 rpm

tom call

10-31-2007 09:01 AM

thanks

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