wasnt you gonna run the comp RX296R-8

That is fairly consistent with what I've seen between those intakes also. The 337 does pretty well considering that it is such a low profile intake. It isn't going to be a high rpm intake on a big motor but it does just fine for this type of application.

Another intake in the mix would be the new Super Victor from Edelbrock. It is a tall intake so it wouldn't fit under your hood but it is a good one to compare to the Indy and 337. On my 505 motor the 337 and Super Victor were dead even.

Is that 1050 QF carb a 4500 style carb? So the 1 inch spacer is a spacer/adapter? For street use a 4150 carb might work better even though you'll give up a little top end power. Just another thing to play with. Looks like Dwayne's carb is putting up good numbers. I'd think that a Holley 1000 HP would work pretty well on that motor.

Edit - I see that the 1050 is in fact a 4150 carb so you should be good to go. A Dominator on an adapter would pick up some power for you if you ever feel the need for more power!

Will that 337 intake work on a RB with Bulldog heads?

great build.
i want a PRH motor too!
is there a long waiting line to get one done by PRH?

Thanks,
Yes and no. They are raised about .160 and little smaller than mw port.

I'm not suprised the 2d held it's own and I'll bet the torque in the 3000-3500 range was stronger compared to the 337. at 4100 pounds I'd that torque curve and take the one that averages best from the bottom of your high gear cruise RPM to your shift recovery (4 speed) or flash RPM... as close as they are up top whichever one averages higher is probably going to ET a heavy car the best.

What I was saying about the 180 degree plenums and more potential is that to make 710 on the dyno the "good" plenum may be making (1/2 of) 730 and the "bad" plenum only (1/2 of) 690 so you average 710 because basically 4 of the holes are not getting fed as well and not pulling their potential weight up top.....people would kill for another 20-30cfm out of their heads (~4 cfm is potentially 1 hp per cylinder) and ideally for max power your manifold should outflow your intake port by several percent. as I remember the best to worst is about 35 cfm so the split might be even more, no way to tell unless you read thermocouples off each cylinder.

Also remember that a dual plane almost always wants a larger carb to compensate for the fact that it really only "sees" 1/2 the carb as oposed to a single where each runner has all 4 barrels available to it. That why my 2d is coming off, to see if an 1150 dommy can be bridgeported to fit and open up the plenum even more (which can have a similar volume effect as adding a spacer), it should be fun and stealthy.

If they're that close I might stick with the 2d....being I've got "only" 517 puny cubes But now I know I suspect I might as well go all out on the 337 port job to see much of a difference on my combo.

What's really intriguing is that the 440-2 Big Single didn't really gain all that much showing that it really needed more Compression to show it's hand.....cubes alone weren't really enough. If we compare the 572 to Brian (Old School's) 13.5 :1 numbers with a similar cube motor it makes for an interesting comparison. I think my heads are on par but I got a lot less lift and and 55 less cubes and my cr (11.87:1 calculated) is right dead in the middle.

Great info!! Thansk to both of you for all the hard work and sharing the data!!

Needless to say some Coke bottle B bodies are packing some serious punch around here! huh??

Ron, glad to see you finally got it together and on the dyno. I'll bet you have a that will not go away for a long time. Those are really impressive numbers and should really help get them Keith's here quicker next year!!! Just don't get too big of a fuel cell in the trunk to take away any space for beer hauling Now to do all those upgrades we talked about to get all that power rolling down the road


Russ

I like it when the numbers come out exactly as predicted. The old McFarland formula that I used in the book predicts a torque peak at 4500 rpm for a 575 inch motor with MW heads. This motor lines up exactly like the formula says it would.

the AF on the dom dyno sheet is almost 15 through the whole pull. i would think the Dom would make way more than just 25 hp over the 4150.

regardless, your combo is capable of breaking lots of parts

Jim, yeah I wondered that too and a lot of times more cam will help a lower compression motor "hang-on" longer, you'll notice the HP doesn't keep gaining dramatically above the torque peak but does a real good job of hanging on to the torque which is an awesome build for the way Ron's gonna drive it. What you don't want (i.e., a textbook Under-cammed stroker) is the torque to peak early and then start dropping and hammering down the power curve which happens even faster as the cubes go up.

I've always found the better the heads you can be a little conservative with the cam and the motor will still make really good upstairs power....by conservative I mean how much bottom end/lower middle are you realistically willing to live without....it depends on your definition of Streetable.

The torque is massive and wall to wall and realistically in a 4100 pounder and a very long 4.50" stroke (already hitting 4000 ft/min at only 5300) you don't need to put all the power way upstairs, with good heads and induction the motor can hang comfortably up high without much noticable VE drop or slowing of the RPM...it's also a nice safety cushion...you know you "OUGHT" to be shifting sometime soon without worrying about the tach climbing too high or the motor laying down, like wise it's not as critical that you hit precisely the right shift point for the car to ET, you're more concerned about the hook.

What's more impressive is that was a 4150, and 700 with an 850 is going to be super responsive.
I agree a dominator would likely raise the torque peak (less pressure drop) but for 90% of street driving I don't know if it'd be worth the extra gas...like I said cup cars make 830+ hp and they're limited to a 4150 base carb

Awesome, Ron......that bear is making some BIG poop......Looks like you're going to be having a LOT of fun with that thing....

That conservative motor might get you car into the 9's if it weighed 3,200LBS.......

Wayne

Hey Ron, great numbers...can't wait to see you and the BP in action if you can make it this far south again next September!

Good job,Dwayne!!