It is a dyno pan so no reason to run a shallow pan when there is room to run a deep one. Usually oil pans work better the bigger they are. Something about the extra volume providing more space for the pumping energy to spread out in I suppose. I don't have test data myself on that theory but plenty of other guys seem to agree that bigger is better when it comes to oil pans. The theory makes sense to me so I just had Charlie build the biggest pan that would fit.

Hey Andy, Thank you for doing what you do for us on Moparts.. Greatly Appreciated.

Thanks for the info. I was wondering if we could get a price comparison between wet and dry sumps? Including the cost to mount and plumb them and the accum. tank?

ANDY

any pics and part numbers of the crank trigger

Crank trigger is a combination of MSD parts and brackets that I make. Here is a picture of the setup with the water pump removed so you can see things a little easier.

That's super cool. Totally unrealistic for somebody like me but cool nonetheless!

Also agree that MSD has been great lately (and have always treated MP right in my experience). It's not often a major supplier even bothers telling anyone they made a change, but they've gone many steps further than the norm by encouraging testing of their new designs.

We ran both the Super Victor and the Mopar 337 intake. Also ran 1.70 and 1.85 ratio rocker arms on the intakes. Best power was 1.85 intakes with the 337 intake.

I assumed the 337 intake would be down 15 or 20 hp from the Super Victor but actually the 337 intake made the most power. Not sure why that is the case but it did.

Peak power with the 337 intake was 797 hp. The best pull with the Super Victor was 791 hp. Both of those numbers were with the 1.850 rocker arms. Best pull with the 1.70 intake rocker arms was 780 hp so the bigger ratio was worth about 10 hp.

Carb was rich with the 337 intake so there is probably another 10 hp to be found. We had the carb dialed in with the Super Victor but the 337 intake must be working better since it makes more power with less jet. I'm still having a tough time believing the 337 intake works better than the Super Victor but if you can't trust back to back dyno pulls then what are you going to trust?

The dry sump setup worked perfectly. Oil pressure was nice and solid in the 60 psi range.

This motor has a ton of pulls on it but the Oberg screen looks perfect everytime we take a peek. This motor isn't putting any trash at all into the oil so that is a good sign. It has a lot of 800 hp pulls on it and the bottom end is all stock except for some ARP main studs.

Andy how did you like the new cam compared to what you have been using?

Well it is a little hard to compare since I've switched a bunch of parts around for each test session. The closest to this combo that I've run before was the original Ultra HP carb tests. For those tests I was using the same basic long block combination with the EZ heads but I had an Indy 440-2 intake and a Comp MM305 flat tappet cam. That combination made 740 hp.

This cam is 266/272 at 050 while the MM305 was 279/287 at 050 so my current roller cam is 13 degrees smaller at 050 but makes an additional 60 hp. Heads, shortblock, carb, headers, oil pan, etc are all the same. I'm using a different intake, I changed over to Jesel rocker arms and I'm running the dry sump. So somewhere in there I picked up 60 hp with a smaller cam (roller vs. flat tappet) and a low profile intake manifold.

I doubt the dry sump is worth much power and the intake probably isn't worth much either. I'm guessing it is mostly the cam profile that is making the power but it is hard to pin down with any precision.

Did you say you were using the EZ heads?
I thought those didn't require the offset rockers.
I would be curious to see a nice head comparison now, maybe a set of Victors would be cool.

Edit: I took another look and maybe it was the photo angle making the rockers look like they were offset. Sorry.

The intake rocker arms have the same offset as the exhaust rocker arms. Jesel does not sell a kit like this so you have to special order it. No big deal, just ask for 16 exhaust rocker arms.

The guys at Indy won't sell the EZ head with Jesel rocker arms so you have to have Jeff at Modern buy bare castings from Indy and finish them. But once again, not a big deal you just have to know what you want to who to buy it from.

While we're on the subject of rocker arms, last time this motor was on the dyno it burned up the pushrods due to poor oiling on the top end. I fixed that by getting the new roller lifters from OU812 and using pushrod oiling. The pushrods looked perfect after the dyno tests so I think I solved that particular issue.

Andy, What was the cam lift with the 1.7 and 1.85 rockers?

Here is a shot showing the 337 intake being installed. This manifold is right out of the box and the runners don't line up with the intake ports all that well but we ran it anyway. The 337 intake is really low profile compared to the Super Victor which is why I assumed it would be down on power.

I've never seen anyone else run this intake before so I didn't know anything about it but now I'm thinking it is a good setup for the right combination of parts. It sure is cheap, I think I only paid $220 from the local Dodge dealer for it.

Quote:

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Lobe lift on the cam is .393/.401 so with the 1.70 setup it was .649/.661 net lift.

With the 1.85/1.70 split ratio rocker arms the net lift was .706/.661.

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Interesting, my CamMotion roller is 706/661 with 1.5's. Is there an advantage to running the smaller cam with bigger ratio rockers?

I'm very surprised on the intake testing results, never would have guessed the 337 works that well.

Andy , is there any way you can post the Graphs?

Peak is cool of course but the curve can be a lot more telling/useful. Thanks!

i had an M1 Stage VI standard port RB I bought from BradH that I wound up not using, Brad said Roger Helgessen worked the plenum roof transitions and it really came alive......the most power I've found working single planes has almost always been in the roof/plenum transition, not so much in the port walls themselves.