just dropped off my 529 BB local s. jersey guy. should be ready next week I'm 2nd in line ! Good to see these local engine guys this busy.

Combination mega block, 13.13.1 , s r heads by Porter racing, 371/290 @ 700 . Milodon dual line system , 1150 thumper reworked dominator carb , indy single plane , crank trigger, lunati solid roller

710/711 lift 282/290 at .050. Hughes 1.5 roller rockers. bronze bushed lifter bores . vacuum pump, diamond pistons gas ported .043 top ring!

hoping to see 785 hp/ maybe 660 ft lbs. what you guys think?

Your goals sound reasonable.

I had an extremely similar combo. Made 786 hp on the Dyno. Forget the torque.

I have an SR combo going together now (HardcoreB's old engine that he's re-vamping for me). In it's past form it made about 770 or so with a tunnel ram, but that was at only 11:1 So I think your goals are reasonable too.

I expect mine with some compression bump will be in the 800hp area, depending how good the new intake is.

I think your estimate is good. It could make a little more too.

Do your SR heads have the 2.25" intake valves?
Do you know the final intake port volume after porting?
Is the block bored to 4.500" ? That can help breathing compared to a 4.375" bore, etc.
What size headers? Dyno shop headers or car headers?

2.19 intake valve. 4.508 bore I don't have the intake volume Dwayne might know it's his work. using my headers 2 1/8 to 4" collector with turn out extensions. it's an A arm car headers custom to the chassis.

That combo could easily make more than 800 hp with the big bore size and good heads. You would need to port the intake to make the bigger numbers and the cam will have to be right on the nose. The cam specs seem too big for that engine but if Dwayne picked the cam then it should work. He knows his stuff.

My 514 with EZ heads made well over 800 hp with a smaller cam, but I had 1.85 Jesel rocker arms so it isn't a direct comparison.

flow numbers are incorrect ! more in the 350s / 260s @ 700 so ! will have to see. the car went 9 .00 with 272 / 284 roller. hoping the cam change should put an 8.90 on the window!

What weight and mph at 9.0? That would at least give you a hp starting point.

Any other changes aside from cam?

2785 W D .best 9.017 146 mph with good N J air! lol

Awesome Bob ! looking forward to seeing the results !

John Impulse racing in wall is handling it. He's right next to Martino and wild rides. nice set up he has. see you soon Bill.

well here's the results. Got the flo numbers from Dwayne
s r flow #s
Lift—— I/E
.100— 73/57
.200—147/114
.300—212/165
.400—263/207
.500—310/239
.600—336/253
.700—348/264
.800—359/271

made six pulls . couldn't use my headers , 2 1/8 to 4" used 2" to 3 1/2" ,

Impressive numbers for such low RPM.

Me thinks there is something goofy in this motor
Was the cam degreed? If so do you know where the intake lobe center was installed at? IF so, were?
If not it should be, I've built and dyno a bunch of BB Mopar stroker motors with similar parts and they made peak power above 6000 RPMs, more HP, power and torque than yours
What about valve spring pressures?
I'll look at your first post again to see if that was listed or not.
EDITED, 2nd look, I see the comment about retarding the cam 4 degrees, why?
Every BB Mopar motor I've dyno and change the cam LSA timing liked from 2 to 6 degrees advanced on the intake lobes, none of them like straight up or retarded on the intake lobes, none of them.
That being said I have never used a cam as large as yours is on the duration
I'm still learning so thanks a bunch for posting your dyno sheets

cam was installed at 108 . I also was wondering why the max power was before 6000. I know the headers used where smaller. I have a light car and advancing the cam I understand would move the torque and hp down the rpm range. This was a refresh with a bigger cam. I'm happy with the outcome. moved the timing ,around, retarding -4 . we added 100 rpm to peak hp and picked up 11 hp.Going to see if the aerospace vac pump needs rebuild. I would like to see more inch's of vac. hey maybe its the Dyno !

That dyno sheet looks like the cam is way smaller than 280/290. Are the heads MW port size? I'm assuming they are since you are using an Indy intake but something moved the power peaks down lower than expected. Did you physically verify that the camshaft was the one that you ordered? The dyno sheet looks like the cam is maybe 20 degrees smaller than what you posted.

And what is going on with the oil pressure? That isn't a good situation with the pressure climbing as the RPM goes up. The pressure relief valve might be stuck or blocked. You should set the relief spring so the max pressure is around 70 psi.

Here is a dyno sheet of a 572 inch Mopar big block with EZ heads and a 280/296 cam. This engine pulls past 7000 RPM and makes more than 860 hp. I think you have something funky going on with your engine. Maybe the valve springs were not correct for the cam? This engine uses the 325 big EZ heads which flow pretty well but I'd think a set of fully prepped SR heads would flow more air than EZ heads. The intakes should be roughly the same but the SR heads should have a better exhaust.

Yes Andy the oil pressure will be checked out. The cam was installed as per the cam card 108. Lift and duration was spot on when i installed it . don't know why the power band is below 6000. yes max wedge ported heads. porter racing set up my heads for me. The headers were pretty small he used I assume that also effects the power band. may have been 1 7/8 or 1 3/4 . Mine are 2 1/8 to 4 inch.

Nice motor, glad to see you have it back together and it'll run better once it's sorted and in the car. I agree that something is off that the engine power is at such a low RPM and falls off quickly.