This is stock exhaust manifolds into 2 1/4 with h system, and we bump the jet to get max performance out of the 650 without going to 750 and 110/113
There is a lot of variance in chassis dynos, don't get to bent out of shape about the numbers.
Without A/F ratios it's hard to say, BUT, I'll guess it's fat.
Should be making 320-340 the crank on a dyno. Figure about 250-270 at wheels.
Comes stock with .095 and .098 jetting and you've got .100 and .102... That's a big jump with the stock metering rod.
Dynos are fun, should have had a sniffer in it to give you some A/F number so it would have been useful to further tune it up.
This was whp
Cam is
Lift 477/480
Duration 268/280
Cam installed @106
This was just 3 pulls with no adjustments
Sounds right to me for RWHP. YOu have a small cam, small eddy carb and low compression. So you have a mid 300hp combo at the crank. I think you made out well.
I think 300hp for this engine is highly optimistic. Mid-300? very unlikely IMO.
It's a shame to have to agree. But even considering this could be a very stingy dyno, it looks like no more than 266 hp at the flywheel.
I'm thinking there would be some more with a proper tune.
I think 300hp for this engine is highly optimistic. Mid-300? very unlikely IMO.
There is a lot of variance in chassis dynos, don't get to bent out of shape about the numbers.