Re: 470 dry sump engine on the dyno
[Re: BradH]
#2283817
04/07/17 10:11 AM
04/07/17 10:11 AM
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Joined: Feb 2003
Posts: 1,942 Metro Detroit
OUTLAWD
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top fuel
Joined: Feb 2003
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Metro Detroit
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C.I.=493 C.R.=10.5:1 Application: Street/strip, 3700lb w/ driver, 9.5" ~4400 converter
Probably stay 4150, then go proper MPI down the road at some point. Hood clearance isn't too much an issue, I should be able to fit an adapter and N2O plate under the scoop
Faster, Faster until the thrill of speed overcomes the fear of death...
71 Swinger - slowly collecting dust/parts 66 Belv. II - just a streetcar 88 Mustang - turbo LS beater
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Re: 470 dry sump engine on the dyno
[Re: AndyF]
#2283915
04/07/17 01:02 PM
04/07/17 01:02 PM
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Joined: Jan 2003
Posts: 14,499 So. Burlington, Vt.
fast68plymouth
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RB, true MW sized manifold, 4150 carb pad....... Pretty much narrows it down to a 440-2 or 440-2D.
For MPI use, I would think the 440-2 would be the preferred choice.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 470 dry sump engine on the dyno
[Re: AndyF]
#2283938
04/07/17 01:48 PM
04/07/17 01:48 PM
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Joined: May 2011
Posts: 4,489 northern,Ohio,USA
Clanton
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I realize this has yet to be tested, but for a RB block and the 270 head, what would the preferred intake be? I am running a 4150 now, so I would likely run an adapter on the Dommy intakes
Super Victor, port-matched TF, 440-3? There are lots of choices for RB intakes with MW ports. For a race engine I'd probably start with the Super Victor but the Mopar 337 is also a very good intake. People have had good luck with the 440-2 over the years. Then there are the multi-carb intakes such as the cross ram, Indy X ram and Mod Man. There is even the Indy DP which is available with MW ports. I wouldn't run the dual plane on a race engine but it works nice on a street engine. I was looking for an opinion on the Modman intake if you care to get into more detail.
Last edited by Clanton; 04/07/17 01:49 PM.
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Re: 470 dry sump engine on the dyno
[Re: Clanton]
#2283963
04/07/17 02:40 PM
04/07/17 02:40 PM
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Joined: Aug 2003
Posts: 43,202 Bend,OR USA
Cab_Burge
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Not to hijack but I have dyno tested two different sets of heads that flowed 30 CFM different with every thing else the same, compression, camshaft, intake manifold carb, but not the same rocker arms due to testing a set of Indy SR M.W. that flowed 340 CFM @.700 lift and then a set of CNC ported 440-1 that flowed 370 @ .700 lift. I had Harland Sharp 1.6 ratio rockers on both sets of heads, I tested both sets of heads on two different short blocks and the bigger heads made 48 HP more on the pump gas 518 C.I. low deck stroker(727 HP with the SR and 775 HP with the 440-1) and they made 70 HP more(775 with the SR and 845 with the 440-1) on the high compression 526 C.I. RB motor. IHTHs
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 470 dry sump engine on the dyno
[Re: AndyF]
#2372777
09/18/17 03:44 PM
09/18/17 03:44 PM
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Joined: Jan 2003
Posts: 31,042 Oregon
AndyF
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Andy: Will there be other pulls with the 279 heads on the 470? Fwiw- hoping that's the case.
Thanks As long as I have money and time I'll keep testing. I'm in the process f sending the Indy intake to Wilson for porting. Not sure if I'll also convert it to EFI at the same time or wait for a third round of testing to go EFI. I might send the heads to Jesel for rocker arms. They haven't seen a set of 270 heads yet so I might be the guinea pig for them. If that deal works out then I'll send the heads to Dwayne also since both places are on the East Coast. If the deal with Jesel doesn't work out then I'll just keep running the T&D rockers. In any case it will probably be a couple of months before I'm back on the dyno with this engine and these heads. My next project is to get the 514 back on the dyno with EFI and Q16. Well it ended up being 5 months not a couple but I am ready to take this 470 with the 270 heads back to the dyno again. I pulled off the dry sump system and will go with a wet sump pan and an external belt drive pump. I'll be interested to see how that works. The more interesting test for me will be the Wilson M1 vs. the Wilson Indy intake. The Wilson ported Indy intake has 18% more internal volume. It is taller and has the full MW runners. The Wilson M1 made a little better power than the unported Indy intake last time I ran them but I figure the Wilson porting on the Indy intake should now make it the top of the pile.
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Re: 470 dry sump engine on the dyno
[Re: SILVER67]
#2373428
09/19/17 05:26 PM
09/19/17 05:26 PM
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Joined: Jan 2003
Posts: 14,499 So. Burlington, Vt.
fast68plymouth
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So would the 270's be a touch on the small side for a bracket/street 540+ cube build?
No worse than RPM's on a 505.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 470 dry sump engine on the dyno
[Re: AndyF]
#2373511
09/19/17 07:54 PM
09/19/17 07:54 PM
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Joined: Jan 2003
Posts: 14,499 So. Burlington, Vt.
fast68plymouth
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Too bad you don't know someone near you with a stock(or stock-ish) 400-3 you could use for a quick back to back test.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 470 dry sump engine on the dyno
[Re: fast68plymouth]
#2373531
09/19/17 08:23 PM
09/19/17 08:23 PM
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AndyF
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Too bad you don't know someone near you with a stock(or stock-ish) 400-3 you could use for a quick back to back test. I already ran the 400-3 in stock form and it wasn't anything great. I have the Wilson M1 to use as the control sample since I also ran it on the last dyno test. I don't think I need two control samples.
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Re: 470 dry sump engine on the dyno
[Re: AndyF]
#2373538
09/19/17 08:33 PM
09/19/17 08:33 PM
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Joined: Jan 2003
Posts: 14,499 So. Burlington, Vt.
fast68plymouth
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But...... It was a dry sump with that test. Not the type of true "back to back" I like to see.
Since the intakes are so easy to swap on these motors, I figured if there was one available.....
But, I'm not paying the bill....... So I get it.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 470 dry sump engine on the dyno
[Re: davenc]
#2374289
09/21/17 12:50 AM
09/21/17 12:50 AM
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Posts: 31,042 Oregon
AndyF
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I can't tell how big those channels are, but in reviewing the MEWagner PVC valve instructions the point about having a good sized opening on the baffle to reduce air velocity to reduce ability to carry oil made a lot of sense to me. I added some 1/4" standoffs to my existing baffle. The channels in the vent have roughly the same cross section area as the #12 line so it should be fine.
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