Performer Rpm vs Torker on the street

[72Fourspeed]

Has anybody swapped a Torker for an RPM? I know the dual vs single plane theories, but has anyone done it ? My car (72 RR, 400,4spd,3.55s) liked the Torker as long as my foot was in it,or when over 2500 rpm. Hoping the performer rpm smoothes things out.

 

[benno440]

rpm wins the battle IMO

 

[Jeremiah]

With that heavy car and 3.55 gear I'd guess the RPM would win from an idle. If it was getting traction and launching at 3500 RPM I'd want the Torker due to increased plenum volume. I'd run an 850 cfm Holley in that case as well.

 

[72Fourspeed]

750 Eddy on now. Headers, mild cam-specs unknown, but rumpy. My issue is that it is screaming in 2nd in traffic. 3rd not enough rpm for intake. Hard to tune with unknown cam , it is what it is .

 

[HT413]

I made the swap in a low compression 413. I feel like the rpm woke the car up, though I have no track time to prove it. The way I figure it, every little thing I do to match my combo to my driving style will add up in the end, and IMHO, the intake manifold is no small thing.

 

[eric383]

I was thinking the RPM also. Here is some reading.
http://www.hotrod.com/techarticles/hrdp_0712_mopar_intake_manifold_comparo/viewall.html

 

[super-bee_ski]

RPM in my opinion
Always chose a "Dual Plane" for street rather than a Torker....

Dual Plane manifolds generally allow for more torque at lower RPMS....

 

[Cranky]

I would think it depends a lot on the cam you have. I've run Torkers on several street cars but my cams were pretty tame to stock. Even ran a 66 Mustang with a 2.80 gear and a 4 speed with one and it also did great. Would an RPM work better. Hard to say since they weren't available during those times. My last street engine with a Torker was an E58 360 in a SWB pickup with 3.55's that was factory stock other than the intake w/650 DP and headers and it had good street manners too. A lumpy cam of unknown lift and duration and unknown setting (degrees it's set at) is most likely your biggest problem.

 

[72Fourspeed]

Agree, but not pulling it down to id just yet.

 

[benno440]

one way to look at it i have a 505 with a 300/305 cam and a 1000cfm pro systems and i am running a rpm ( it has been ported though) and here is the evidence of it vs a edelbrock victor, i know its not a torker but this just shows how well it performs on a street engine

http://www.forbbodiesonly.com/mopar...ported-intake-manifolds-RPM-440-vs-Victor-440

 

[AMX364]

Had a Torker on a 383 70 Barracuda 3.55 a few times and it did not work for me. 99% driving under 3000 rpm so it was not in the intakes designed rpm range. Maybe if I had a 4 speed it would have worked better. Always be honest (at least to yourself)about your driving habits and cars and chose a intake that fits your needs not what the racers are using.

 

[Cranky]

Don't think anyone mentioned it but what Torker are you talking about? The old school one or the Torker II? Also what engine? You can also get an idea of what kind of cam you have by measuring the lift at the rocker and with a degree wheel, you can get more info on it. Hey, you might get lucky with just an intake swap but the cam is the heart of an engine and if that's not beating right, nothing is going to help very much. I've seen way more engines than I care to mention with cams that were not installed correctly for maximum performance and a retarded cam can make an engine act like you're talking about yours is doing. Also, a retarded cam will be lumpy and just advancing it a few degrees will usually smooth it out some.....also advancing ignition timing a bit can help some.

 

[AMX364]

It was mid 70's so only Torker would have been first gen. It is hard to beat a good high rise intake for pure street driving. IMHO.

The intake was installed several times before I decided that I did not have a intake leak and it might just be a design issue of 3500 and up. It was a 727 transmission with a manual reverse shifter and fun to drive.

 

[tallhair]

I ran an original Torker with a 780 Holley vacuum secondary carb on a 65 413 in my 4 speed RR for several years and it ran great. I had 2.76 gears and then 3.23 and it always felt very strong .. there was no now the power comes on moments. It was smooth and strong from idle to top end.

I have a Torker II now also and want to try that one when I get the car on the road and may try both to compare the seat of the pants feel

 

[Cranky]

I'm interested in what the combinations were that ran the old school Torker. Ignition timing is important along with better exhaust (always had headers on my junk with them) and a little bit of gearing is usually best however, my Mustang wasn't geared down at all but did have the advantage of a clutch to launch with. And that thing would make all the tire smoke I wanted and would do a static burnout in 2nd gear! I've heard for years how bad these intakes are but I've never experienced it with any of my junk. Also, I'm curious as to what your compression test PSI is.....I'm betting it's pretty low....

 

[1wild&crazyguy]

The Rpm dual plane will make more torque throughout the entire range than the torquer, stronger pulses will pull harder on the carb and that helps mix things up a bit better especially in the lower rpm range.

If you were able to gear it numerically higher with some 3.91's or better and had a larger cam in the 290's duration or better...then a single plane could 'possibly' be the better choice.imo

As for tuning ease, that again is attributed to the open plenum design of a single plane which needs more attention to to pump shot/transition from idle to main circuit than a dual plane.