505 stroker fresh off the dyno - Power seems low? Thoughs?
I remembered I tested a somewhat similar combo........ in 2008.
RB 512, 10-something CR, pump gas.
Prepped std port EZ heads, Holley SD manifold, HP950 carb, 252/261 roller cam.
I supplied the heads and did the dyno test, but didn’t build the motor.
Looking at this sheet now, it also leaves me thinking the peak tq output could have been a bit better.
This was a real street engine so it was tested with fairly hot water...... right up near 180*.
Another similar build to this one that used std port SR’s with mild porting and an M1 single plane....... but much more cam duration made about 75hp more than this one.
I didn’t supply the cam for this 512, although it was about right for the “application”.......... but if you were chasing the number on the dyno that would have been my first change.
You can see the VE never reaches 100%, and drops off pretty quickly as the rpm goes over 5600.
I wasn’t really a fan of the cam in that motor, but was still thinking it would break 600hp.......however it just didn’t happen.
I remembered I tested a somewhat similar combo........ in 2008.
RB 512, 10-something CR, pump gas.
Prepped std port EZ heads, Holley SD manifold, HP950 carb, 252/261 roller cam.
I supplied the heads and did the dyno test, but didn’t build the motor.
Looking at this sheet now, it also leaves me thinking the peak tq output could have been a bit better.
This was a real street engine so it was tested with fairly hot water...... right up near 180*.
Another similar build to this one that used std port SR’s with mild porting and an M1 single plane....... but much more cam duration made about 75hp more than this one.
I didn’t supply the cam for this 512, although it was about right for the “application”.......... but if you were chasing the number on the dyno that would have been my first change.
You can see the VE never reaches 100%, and drops off pretty quickly as the rpm goes over 5600.
I wasn’t really a fan of the cam in that motor, but was still thinking it would break 600hp.......however it just didn’t happen.
