anyone run a hammer on a stock hdr 40 efi. have a 1854 prodigy with 25th hdr can spin a big blade to 4400 and beyond just looking for a little more hole shot under load. have a raptor also although its alot smoother and handles better not giving me the get up and go id like.

Hammer will get on plane quick but is about 2mph slower.

Gnspeed is right. I run a fat blade on my GTR 40, which is almost identical to the hammer and it is a couple slower on the top end but the holeshot is second to none and it carries a load extremely well

Yes you can run a hammer on the new 40 with no problems. Some people say they can turn them with stick 37s, I call BS on being able to turn it effectively on the stock 37’s.

You might be able to turn it, BUT its going to lug the motor....

What rpm is concidering luging motor? I think most stock Big Block Briggs build their best power between 3600-3800 rpm.

I run my fat blade at 4500

I can run my Hammer upto the 4700 rpm rev. limiter in my coils, but very seldom do it. My motor is getting some hrs. on it and I want it to last a few more seasons. I run 3800-4000 rpm . Going to try a Rapture this summer, to see how it does. Motor is 45 mag. with BPS internals and heads.

Instead of the raptor, run a mercury rapid. You will thank me for this information lol

Tried a Mercury 3 Bld, was on rev. limiter at about 2/3 throttle. Thought maybe raptor with its 1" extra pitch may help. My rig is very light, and takes very little to plane it.

The merc 3 blade and the merc rapid are two completely different props. The rapid is a 12 pitch out the box if I remember correctly

Call gatortail and you can get them for 300 directly. Send it to baggy after you get it