2A impeller

[Statue]

what do you guys think about a 2a inpeller on a 21' mini day cuiser powered by a 429? is this too much impeller or is it ok to go with a big impeller?

[Squirtin Thunder]

what do you guys think about a 2a inpeller on a 21' mini day cuiser powered by a 429? is this too much impeller or is it ok to go with a big impeller?
What impeller are you running now ???
How many RPMs are you turning with it ???

[centurion tunnel]

What impeller are you running now ???
How many RPMs are you turning with it ???
Ya what he said.

[Statue]

Does not currently have a motor or pump.This is a first installation.
thanks

[Squirtin Thunder]

Does not currently have a motor or pump.This is a first installation.
thanks
So tell us about the Big Bad Ford please !!!

[Statue]

The Ford is a basically stok 429; Edelbrock performer, mild cam, electronic ignition and a 750 holley carb. Pump was rebuilt in January.
Thanks, Wes

[Squirtin Thunder]

The Ford is a basically stok 429; Edelbrock performer, mild cam, electronic ignition and a 750 holley carb. Pump was rebuilt in January.
Thanks, Wes
What heads ???

[Mighty Thor]

Oh for Crying out loud, quit stalling an tell him what he wants to know. You are gonna get a pretty decent hole shot with the AA, but probably be running top speed of 50 to 60 depending on max rpm. Others will have different results but my old 20 foot Glastron was running 55mph at 5000 rpm with a poorly tuned 460 car motor. Then it broke and now I am lucky if I can paddle much over 3 knots down stream with a tail wind. :supp:

[Squirtin Thunder]

Oh for Crying out loud, quit stalling an tell him what he wants to know. You are gonna get a pretty decent hole shot with the AA, but probably be running top speed of 50 to 60 depending on max rpm. Others will have different results but my old 20 foot Glastron was running 55mph at 5000 rpm with a poorly tuned 460 car motor. Then it broke and now I am lucky if I can paddle much over 3 knots down stream with a tail wind. :supp:
466 BBF 618hp@6200
.........A2.....A.......B.......C...
4600 363.9 308.6 264.2 222.1
4700 387.1 329.4 282.0 236.3
4800 411.3 351.1 300.5 251.2
4900 436.5 373.7 319.8 266.7
5000 462.6 397.3 340.0 282.8
5100 489.8 421.8 361.0 299.5
5200 517.9 447.4 382.8 316.8
5300 547.1 473.9 405.5 334.8
5400 577.4 501.5 429.1 353.4
5500 608.7 530.2 453.6 372.7
5600 641.1 560.0 479.0 392.7
5700 674.7 590.8 505.3 413.4
5800 709.3 622.7 532.6 434.7
5900 745.1 655.8 560.9 456.8
6000 782.0 690.1 590.1 479.6
6100 820.1 725.5 620.3 503.1
6200 859.5 762.2 651.6 527.4
That would mean your poorly tuned 460 was making over 1hp per ci, that has always been pritty damn good when you can do that. But mine turned a A2 to 4600rpm@69mph and has gone on to spin it to 5200rpms@78.3mph.
Berk recomends the A2 impeller in just about every family lake boat. You will loose about 150 -300rpm and pick up bout 5mph in a good pump and well loaded. The bigger the impeller the more eficiant it is, shorter distance to the vains of the bowl. More forward thrust.

[SmokinLowriderSS]

Since he is starting from scratch, I was going to reccomend having about 450HP or so available to spin that AA, even before Thunder posted that chart. That much muscle should give a very good holeshot (for a heavy boat) AND a respectable top speed.
Work on the motor some Statue, make sure it has the HP to make you happy. 450 should be easy enough to come by without enourmous expense (blowers & such). May need good header exhausts tho, a good intake, and perhaps some head work.