Intake Question

[nivvy]

Going from dual 4bbl set up to a single 4 single plane setup...my question is my cam builds power from 3000-6500.....so with a stroker motor hughes tell me it is really 2700-6200 appx..cause of the stroke...so is the edelbrok torker 2 a good set up for me since it works from 2500-6500...or go with a tm7 that is 3500-7500......dont want to run the victor intake due to hood clearance...and also ia m going to run a dominator with a 2 inch adapter sto standard holley flange for more hp....


thx

8 Pack

[Oldschool]

8 Pack,
Based on the info you are supplying, I would definitely go with the Edelbrock Torker 2.  It comes in sooner and will work all the way to the top of your rpm band..  The TM7 won't come in until another 1000 rpm and works above where your engine will rev.  You are losing on the bottom without any gain on the top.  You will live between 2500 and 6200 WAY more than between 6500 and 7500. The TM7 is too peaky for your application.  Just my 0.02.        ...Oldschool

[firefighter3931]

The TM7 is a great manifold and better suited to that build than the torker2 inmo. I had the TM7 and a Street Dominator as well as the Victor and Performer RPM ony my E-headed 446 when it was being dynoed. In back to back tests, the TM7 and Street Dominator were neck in neck with each other...maybe a few hp and ftlbs traded here and there but for all intents and purposes, nearly identical.

This is a stroker build so bottom end power won't be an issue. Those power ratings apply to a 440 cubed engine, not a stroker so you basicly have to throw the #'s out the window. Ideally you want a manifold that will extend the upper end power range, not one that emphasizes lower end power. 

Ron

[Oldschool]

So there you have it----those last two replies ought to make your decision easier..        Good luck with whatever you decide....            ...Oldschool

[nivvy]

wonder what chyrco thinks..

[Oldschool]

wonder what chyrco thinks..

He will wander by soon I'm sure.  I'm curious also.....        Oldschool

[Chryco Psycho]

Street Dom would be my first pick but with a spacer you are increasing plenum size which will move the power band up a liitle , you may want to look at the M1 single plane with the dominator flange  & not use the spacer this should make a killer mid to top end power
 How big is your stroker , I forget ?

[Follicly Challenged]

Re; Intake selection

Hey firefighter3931, if you don't mind, when you were dyno'ing your Eddy'd 446, and testing those manifolds, How far apart were all those Intakes, TM7, VICTOR, PERFORMER RPM, STREET DOM.

Were they all "4" , just basically "trading a few numbers around", or just the TM7 and STREET DOM with each other ? or all 4 manifolds ?

I'm just curious ? 

FC



 

[nivvy]

500 cubes....

[nivvy]

isnt the m1 a much higher power band...I am being told by local gurus to go with the tm7....to pull out the top end power...but i want to be streetable driven..

8 Pack

[wart1de]

Hey 8Pack,

Why do you want to go from dual carb to single? I would have expected the dual to make more power?

[firefighter3931]

Re; Intake selection

Hey firefighter3931, if you don't mind, when you were dyno'ing your Eddy'd 446, and testing those manifolds, How far apart were all those Intakes, TM7, VICTOR, PERFORMER RPM, STREET DOM.

Were they all "4" , just basically "trading a few numbers around", or just the TM7 and STREET DOM with each other ? or all 4 manifolds ?

I'm just curious ? 

FC

FC (luv the handle  ) the SD & TM7 were pretty close. The TM7 made more tq (5ftlbs) and the SD made more hp (5hp). Both had peak tq/hp at the same rpm. The Victor was good for 10hp more than the other two but it pushed the tq peak up 300 rpm. Definately a race piece for a 440 engine but would probably make a nice intake for a long arm combo. The performer rpm was great on the bottom end, below 3500.... but fell flat on it's face at 6k. At that point hp dropped like a rock while all the single planes kept pulling. The ported e-heads (just under 300 cfm@.600) were probably too much for the dual plane. Even the TM7 & SD responded favorably to a 1in open spacer to increase plenum volume. We even tried an open spacer on the RPM and it lost power ! That engine did not like the dual plane, period.

This is a pump gas 10.5:1 combo with a custom Comp solid flat tappet grind. Basic shortblock with LY's and 2355 speedpro pistons, zero decked, balanced etc....nothing exotic. Final Numbers were 535hp/540tq with the SD, 1in open spacer and an 830 cfm proform carb. It did make 560hp with the Victor and a 950hp but that won't be run in the car due to hood clearance issues as well as the TQ peak being pushed up higher than i wanted for the Dynamic 9.5 converter i'll be running in the car.

I still have all the dyno sheets from the build and there was some major thrashing going on. We made 80+ pulls swapping 4 different manifolds, 3 sets of headers and multiple carb and spacer combinations. The motor made it's best power at 35* total timing, fwiw.

Ron

[nivvy]

what about a weiand team g...

[Chryco Psycho]

not a bad intake , the M1 is better though , the team G makes a sharp turn right at the head & is more turbulent than the straight run at the head that the M1 has

[Follicly Challenged]

Thanks Ron, Firefighter3931  Fantastic info, and thanks again for the engine details, to relate the testing to.

FC out.