Edelbrock RPM vs Edelbrock Victor (again)

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IQ52

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I keep posting this information. Is anyone listening?

Oh, they look real purdy, but I don't recommend the Edelbrock Victor except in high rpm full race engines! On a street or street/strip engine, a ported RPM is going to be the best of both worlds.

496 stroker. 10.3:1 compression, Edelbrock RPM heads flowing 292cfm @ .500" lift and 306cfm @ .600" lift. Lunati street solid roller 249/255 @ .050 and .585"/.600".

Column (1).....well ported Edelbrock RPM
Column (2).....Victor gasket matched
Column (3).....Victor plenum smoothed and gasket matched
Column (4).....Victor plenum ported, gasket matched with a 2" Super Sucker spacer.

RPM.............(1) TQ/HP.....(2) TQ/HP.....(3) TQ/HP.....(4) TQ/HP

3000...............541/309.......519/297.......522/298.......522/298
3100...............548/324.......520/307.......526/310.......523/308
3200...............570/347.......548/334.......539/329.......545/332
3300...............612/384.......581/365.......587/357.......586/368
3400...............614/398.......585/379.......591/382.......594/384
3500...............631/420.......595/396.......597/398.......603/402
3600...............639/438.......605/415.......609/418.......612/420
3700...............639/450.......607/428.......611/430.......610/429
3800...............638/462.......609/440.......611/442.......610/441
3900...............635/472.......606/450.......611/454.......617/548
4000...............639/486.......607/462.......614/467.......616/469
4100...............639/499.......608/474.......613/478.......621/484
4200...............628/502.......604/483.......615/491.......618/494
4300...............616/504.......602/492.......607/497.......616/504
4400...............611/512.......599/502.......602/505.......614/515
4500...............608/521.......600/514.......608/521.......613/525
4600...............607/531.......605/530.......606/531.......614/538
4700...............608/544.......603/540.......605/541.......619/553
4800...............607/554.......606/554.......608/556.......621/568
4900...............612/571.......615/574.......612/571.......617/575
5000...............609/579.......611/581.......617/588.......629/599
5100...............617/599.......615/597.......620/602.......623/605
5200...............614/608.......608/602.......619/612.......619/613
5300...............606/612.......608/613.......612/617.......621/627
5400...............597/614.......602/619.......606/623.......609/626
5500...............596/624.......589/617.......603/631.......610/638
5600...............590/629.......592/632.......597/636.......605/645
5700...............585/635.......582/631.......592/642.......594/644
5800...............578/638.......577/637.......584/644.......585/646
5900...............570/640.......563/633.......576/647.......584/656
6000...............550/628.......555/634.......564/644.......568/648
6100...............533/619.......542/629..........N/A..........559/649
6200..................N/A.............N/A.............N/A..........551/650
 
Interesting, the RPM surprises me, how would you describe RPM port work, deep gasket or more? Is it an old RPM or the newer Air Gap version?

I have been considering a Super Victor EFI lately due to M1 4bbl becoming extinct 6 months ago. I was doubting that the Hughes RPM AG would work well enough for 500 HP, I know it will work well up to 400-450 but was not sure on larger HP engine build.

I have installed a few Pro Flow systems which use the SV EFI and they made lots of power and torque but very curious about the Hughes on big HP.

I would have expected the results from both unported manifolds to compare like the RPM and fully worked Vic , column 1 and 4, but scaled down. I would have thought RPM would sacrifice 10-15 HP up top over Vic but gain 10-15 TQ down low around 3500.

Very interesting info. Did you do dyno work yourself?
 
Well, as it's a big block RPM, they are all air gap style and have been from the beginning. RPM average flow before porting 291 cfm, after 335 cfm. This was more than a deep gasket match and even more could be done.

We have our own dyno.
 
How about a strip dominator on a 360 with a tweaked thermoquad is that ok fo street use? Will a 3400-3600stall help car run descent on the street? Just asking if it is really necessary to swith to rpm/rpm airgap type intake. All I know is the strip dominator I have seems ok on the street not really feeling low on torque.
 
Of course its okay for street use. The Victor is okay for street use, just other manifolds may work better. You run what you have unless you have money to blow trying other things that may or may not work better.

I'm blessed with a dyno so I can directly test some ideas. I've spent a heck of a lot of money trying things but never a Strip Dominator. If I had one and I felt good driving it, well, does baby need a new pair of shoes?

Yes? Leave it on!
 
I also tested this on a 470 we did years ago. RPM vs Victor OOTB for both. They both made the HP, 600, but the RPM made around 50 more torque on the low end.
 
I also tested this on a 470 we did years ago. RPM vs Victor OOTB for both. They both made the HP, 600, but the RPM made around 50 more torque on the low end.

seems to me that a guy w/ a big stroker , and a lot of h.p., will want to lose some bottom end if he doesn`t have huge tires on it. the combination !????---------that`s the way I`m headed anyway.
 
have any of you guys with a dyno tested any small block efi intakes? Like a hughes/edelbock efi air gap, edelbrock super victor efi, mp m1 4 bbl(pointless now that its extinct)? I have a fairly high hp project but I am undecided on intake. With mp discontinuing all m1 intakes, the field is now narrowed down to Super victor EFI LA, or Hughes/Edelbrock RPM Air Gap EFI. There is just no other choice, so I have run Edelbrock Pro flow on several fairly hot 340/360 LA builds and had good results(sans Edelbrocks horrid tech support and general sucking) but no A/B comp with Air Gap vs RPM AG so just curious about anybody's experience with them.

Magnum 5.9, ported EQs, .550"+ cam, few other of our special touches. Should make 450 HP no problem, more sunny day driver than strip car, but will do some runs. Plan on trying a factory pcm w flash and will run ms3 pro if the fiat pcm wont put out. Trying to stay on a working mans budget for our cusomers. We do flashes and ugrades all the time but typically dont go over 400 with factory parts FI swaps. This one is for me, not a customer. Super V says 3500-8000 RPM range but I would like a bit more on botom, just dont know what AG will do up top. Thanks for sharing any exp. Evan
 
Yeah, hard to go wrong with the RPM intake on anything that is mostly street driven. I learned that lesson years ago with the low deck 470 in my '65 Coronet. The RPM made a lot more torque which you could feel around town. The Victor made a little bit more top end power but the RPM would still beat it to the stripe since it came out of the hole stronger and recovered better after each gear change.

I learned later that the Victor can be helped out by using a carb with annular boosters. I have a custom built 950 carb with annular boosters and that carb will pick up roughly 50 ft-lbs of torque over a down leg style carb when used on a Victor type intake. So a Victor intake with the right carb can give you the best of both worlds but the average guy isn't going to get there. It takes some R&D $$$ to find combos like that.
 
Andy,
With same theory, the FI should be another step up from annular carb. Thats what I am curious about, will the open plenum be more street friendly with fi, yes it will, but how it compares to RPM is the $500 question.

If the Hughes RPM AG EFI can be made to perform almost as well as the SV EFI up top? Easy choice, same can be said about less expensive SV EFI, will it work well below 3000 since it has FI?

That is why some actual numbers would be so nice. I am very impressed by IQ52's work with these combos, unleashing hidden power is often very hard to do and he got great results. I never would have guessed that the RPM was capable of those numbers up top. That was what got me rethinking my intake choice. How about an MPFI system for the RB? It would be fun to build a system for this engine IQ52 has.
 
I keep posting this information. Is anyone listening?

Oh, they look real purdy, but I don't recommend the Edelbrock Victor except in high rpm full race engines! On a street or street/strip engine, a ported RPM is going to be the best of both worlds.

496 stroker. 10.3:1 compression, Edelbrock RPM heads flowing 292cfm @ .500" lift and 306cfm @ .600" lift. Lunati street solid roller 249/255 @ .050 and .585"/.600".

Column (1).....well ported Edelbrock RPM
Column (2).....Victor gasket matched
Column (3).....Victor plenum smoothed and gasket matched
Column (4).....Victor plenum ported, gasket matched with a 2" Super Sucker spacer.

RPM.............(1) TQ/HP.....(2) TQ/HP.....(3) TQ/HP.....(4) TQ/HP

3000...............541/309.......519/297.......522/298.......522/298
3100...............548/324.......520/307.......526/310.......523/308
3200...............570/347.......548/334.......539/329.......545/332
3300...............612/384.......581/365.......587/357.......586/368
3400...............614/398.......585/379.......591/382.......594/384
3500...............631/420.......595/396.......597/398.......603/402
3600...............639/438.......605/415.......609/418.......612/420
3700...............639/450.......607/428.......611/430.......610/429
3800...............638/462.......609/440.......611/442.......610/441
3900...............635/472.......606/450.......611/454.......617/548
4000...............639/486.......607/462.......614/467.......616/469
4100...............639/499.......608/474.......613/478.......621/484
4200...............628/502.......604/483.......615/491.......618/494
4300...............616/504.......602/492.......607/497.......616/504
4400...............611/512.......599/502.......602/505.......614/515
4500...............608/521.......600/514.......608/521.......613/525
4600...............607/531.......605/530.......606/531.......614/538
4700...............608/544.......603/540.......605/541.......619/553
4800...............607/554.......606/554.......608/556.......621/568
4900...............612/571.......615/574.......612/571.......617/575
5000...............609/579.......611/581.......617/588.......629/599
5100...............617/599.......615/597.......620/602.......623/605
5200...............614/608.......608/602.......619/612.......619/613
5300...............606/612.......608/613.......612/617.......621/627
5400...............597/614.......602/619.......606/623.......609/626
5500...............596/624.......589/617.......603/631.......610/638
5600...............590/629.......592/632.......597/636.......605/645
5700...............585/635.......582/631.......592/642.......594/644
5800...............578/638.......577/637.......584/644.......585/646
5900...............570/640.......563/633.......576/647.......584/656
6000...............550/628.......555/634.......564/644.......568/648
6100...............533/619.......542/629..........N/A..........559/649
6200..................N/A.............N/A.............N/A..........551/650

Once again awesome post.

Ever do an RPM VS Torker 2 comparison?
 
I'm always ears when you post Jim !!
Thanks for all your testing and sharing !!!
 
Once again awesome post.

Ever do an RPM VS Torker 2 comparison?

Yep I have all that too. (1) deep gasket match Torker II, (2) deep gasket match RPM,

rpm...........(1) TQ/HP.............(2) TQ/HP.............(3) TQR II w/2" spacer

3000..............514/293..............543/310...............small improvement from TQR II
3200..............544/331..............579/353
3400..............590/383..............615/398
3600..............612/420..............632/433
3800..............606/439..............632/457
4000..............607/463..............630/480
4200..............608/486..............624/499
4400..............599/502..............604/506
same same same
5600..............589/628..............586/625................593/633
5800..............574/634..............564/624................588/650
6000..............554/633..............540/617................563/643
 
Yep I have all that too. (1) deep gasket match Torker II, (2) deep gasket match RPM,

rpm...........(1) TQ/HP.............(2) TQ/HP.............(3) TQR II w/2" spacer

3000..............514/293..............543/310...............small improvement from TQR II
3200..............544/331..............579/353
3400..............590/383..............615/398
3600..............612/420..............632/433
3800..............606/439..............632/457
4000..............607/463..............630/480
4200..............608/486..............624/499
4400..............599/502..............604/506
same same same
5600..............589/628..............586/625................593/633
5800..............574/634..............564/624................588/650
6000..............554/633..............540/617................563/643


Wow, i may really reconsider the RPM, I have the TQR II but was considering a switch, even to a Holley Street Dominator. But you're really selling me on this RPM. Thats not on the same stroker engine is it?
 
Do you have any tests with a small block stroker?

No comparison tests. This is a pump gas, single 4-bbl, 423.5ci (4.125") stroker with the Super Victor intake.

RPM............TQ/HP

3000..........425/243
3200..........464/283
3400..........456/295
3600..........457/313
3800..........453/327
4000..........470/358
4200..........506/404
4400..........533/447
4600..........547/479
4800..........547/500
5000..........551/525
5200..........543/537
5400..........532/547
5600..........527/562
5800..........523/577
6000..........506/578
6200..........502/592
6400..........482/588
6600..........465/584

I won't even guess what the dual plane results may have been. He didn't need a dual plane. This went in a 67 Dart with an automatic transmission and 3.23 gears. Roll on the throttle at any rpm in any gear and the tires break loose.
 
No comparison tests. This is a pump gas, single 4-bbl, 423.5ci (4.125") stroker with the Super Victor intake.

RPM............TQ/HP

3000..........425/243
3200..........464/283
3400..........456/295
3600..........457/313
3800..........453/327
4000..........470/358
4200..........506/404
4400..........533/447
4600..........547/479
4800..........547/500
5000..........551/525
5200..........543/537
5400..........532/547
5600..........527/562
5800..........523/577
6000..........506/578
6200..........502/592
6400..........482/588
6600..........465/584

I won't even guess what the dual plane results may have been. He didn't need a dual plane. This went in a 67 Dart with an automatic transmission and 3.23 gears. Roll on the throttle at any rpm in any gear and the tires break loose.

Shoot. I was hoping you had a comparison between the two. I'm on the fence yet. Why didn't he need a dual plane? More strip than street?
 
Mostly street. It was deliberate to detune the bottom so he had a prayer of hooking it up with street tires. It didn't work.
 
How much static compression and what cam was in that motor?
 
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