507 BBC pulled 725hp @ 7100, is that the about the norm??

[gateman]

Hey everybody!! first post here.. Just got back from the dyno room at my engine builders shop. The best pull was logged at 725.4 hp at 7050 and 600.4 ft/lbs of torque at 5900.
The BBC build consist of Callies magnum 4.25 crank, 4.360 bore with
custom JE pistons at 13.2. AFR cnc / full port 335cc heads, Victor Jr cnc
port from AFR..T & D shaft mount competition roller rockers, Oiver billet rods, custom billet cam from LSM ( close to .800 lift), custom built 4150
holley bench flowed at 1080cfm professional built by a professor from
Arizona. Jesel belt drive and 55 gal water pump and 110 VP Racing gas.
What is everbody else turning??? Are my numbers good??

[mark6052]

I have been involved with VP fuels for the last 12 years. I have alot of dyno time with various engines . not bragging. I would not recommend the vp110. It does not have the octane for your engine and rpm range.it was made for a comparative fuel to sunoco 110. try using C12. its alittle lighter so jet up a touch.3% it should make a surprising difference. dont be afraid to jet up more, this fuel response well. let us know how you do.

[cepx111]

First off welcome to the forum.
Thats a pretty good pull but I think you got more there to be tapped.
Ive personally seen 13 to 1 496's with smaller cams make 750hp and 650 torque with an outta box HP 1050 dominator.
Goodluck, Charles

[hammertime]

No dyno is the same as the next #'s can be happy or not. Your #'s are in the ballpark of what they should be. I changed parts half this year thinking my stuff should be faster being it made big power on the dyno, one day a friend says "we dont race dyno's" made lots of sense

[cepx111]

We dont race dyno's...lol Thats a good one.

[billhendren]

You have more there to be found.I would expect at least 150 more H.P. from that combination.were getting that much with a 420 cu.in. SB2.2 small block at the wheels on a dynojet chassis dyno through a quick change. can you post your dyno chart so we can see what the problem may be? the 110 octane fuel could be a big part of the problem if you couldn't run the amount of advance necessary. Bill

[hammertime]

IMO 110 is fine, i've did this test on the track on a 13:1 & 14:1 motor, switched from 110 to 114 and seen no difference but price of it.

If it were me i'd ditch the 4150 for a 1050 dominator.

[Birddog95]

We were running a simular combo in our dragster. Ours was a 509 with Pro1 345 heads Brodix intake and a 1050 dominator. We pulled 820Hp. What we noticed with some cam swaps was huge gains and a few more by going to a newer dominator (gained 12HP from an old 1050 2 circuit to a new 1050 3 circuit) :wink:

[bjuice]

My 511ci BBC is making a little over 800 hp...pretty much the same engine except my cam is much much smaller...7.22-7.22 lunati..

yes i think you have more there.

thanks Brian