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View Full Version : What size prop do you reccomend for 21 GT with 351



YoAnthony
08-13-2008, 12:55 PM
Hello all, I just rebuilt the 1972 gt 21, 351 HM engine. It is runing strong. It is turning 5,000 RPM with 4 people and a full tank of gas. It currently has a volvo aluminum 14x21 on a 250 drive. Should I go to a 14x23?

Thanks in advance for the advice!

f_inscreenname
08-13-2008, 02:26 PM
I have a nice 23 for sale in the classifieds section.:wink:
http://www.donzi.net/forums/showthread.php?t=53566

BigGrizzly
08-13-2008, 05:01 PM
I am not trying to upset anyone but I feel my SS Volvo props at a 21 may actually be the ticket.

f_inscreenname
08-13-2008, 07:23 PM
I am not trying to upset anyone but I feel my SS Volvo props at a 21 may actually be the ticket.

No one upset here. Just a cheep way to test props.:)