Holley vs 48 IDA's back to back dyno result!!!

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Holley vs 48 IDA\'s back to back dyno result!!!

Holley Weber
Tq HP Tq HP
4000 338 257 382 291

4400 371 311 400 335

4800 398 364 449 411

5200 411 407 441 436

5600 413 440 438 467

6000 412 470 434 496

6400 400 488 422 515

6800 401 519 399 517

7000 390 534 386 514

331 CU SB ford,victor Jr head ported and topped with Victor JR manifold and IDA's manifold,pump gas (11.0 cr)dynoed in Knigth racig services on in house Superflow!!!
 
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Kevin M

Re: Holley vs 48 IDA\'s back to back dyno result!!!

Very interesting info 289.

What size chokes were the Webers fitted with, and how much time was spent on the dyno fine tuning each carb setup? Also, do you know the specs of the cam that was used?

Kevin
 
F

Re: Holley vs 48 IDA\'s back to back dyno result!!!

289,

Is this a chassis (Dynajet, Dynamics) Dyno or flywheel Dyno, What kind of a car?
 
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BenL

Re: Holley vs 48 IDA\'s back to back dyno result!!!

For folks like me who prefer pictures to numbers, here's the numbers as a graph.
hp.gif
 
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Re: Holley vs 48 IDA\'s back to back dyno result!!!

Try first 42 and after 44 and back to 42,14 hours on dyno (flywheel dyno,this engine will be fitted on ac cobra
Cam specs:flat tappet 592/.544,262/264 @.50,11.0 CR with unleaded pump gas!
 
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Gary Gibbs

Re: Holley vs 48 IDA\'s back to back dyno result!!!

Very nice results! Are those US or UK HP figures?? /ubbthreads/images/graemlins/grin.gif
 
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Kevin M

Re: Holley vs 48 IDA\'s back to back dyno result!!!

Ron,

Looks like you are going to get some good material for that Dyno section.

Kevin
 
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Re: Holley vs 48 IDA\'s back to back dyno result!!!

About dyno is a superflow US brand,figures are the same (UK vs US)
Bernie
 
F

Re: Holley vs 48 IDA\'s back to back dyno result!!!

Bernie,It would be FANTASTIC (for all members) if you post Rear wheel HP results once you have installed this motor in a vehicle.

Kevin, I think Ron was talking about a section for rear wheel HPs.
 
Ron Earp

Ron Earp

Admin
Re: Holley vs 48 IDA\'s back to back dyno result!!!

We'll accept anything in the dyno section, provided they are dyno results. I strongly prefer rear wheel numbers because so often the 500hp stoker turns into the 325 rwhp stroker. Mine stoker will probably do the same. Makes me even happier with my tiny 2.2L Lotus!!

R
 
christian.39

Adam C.

Re: Holley vs 48 IDA\'s back to back dyno result!!!

289, any chance you could tell us the runner length of the IDA's? That would be the length from the head flange to the bellmouthed webber inlet.

I'll bet dollars to doughnuts that the runner length for the webbers was longer than the primaries of the victor jr.
 
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Re: Holley vs 48 IDA\'s back to back dyno result!!!

lenght are 13.180 from top of the stack (2.5")and 17.830 to center of the valve
Bernie
 
christian.39

Adam C.

Re: Holley vs 48 IDA\'s back to back dyno result!!!

Thanks Bernie,

I think the Victor Jr. is more like 12-16" (the length varies quite a bit from runner to runner) from the plenum to the valve, so this probably explains most of torque difference.
 
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