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Re: Guess my Dyno numbers [Re: 10sec440] #2494083
05/09/18 07:32 PM
05/09/18 07:32 PM
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AndyF Offline
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From what I recall your cam was 265/270 @ 050 with not much lift. Something in the mid 0.500 range? So that could be just a tad small for the cubic inches and RPM. Since the car is running really good I might stay with the same lobe family and just go up one or two sizes on the cam. But other people have good suggestions on checking for adequate fuel pressure at the top end. You hate to spend a bunch of time and money changing the cam then find out you have clogged fuel filter or something like that. I'd think that cam would pull to 7000 but perhaps it is just running out of air. That is where the dyno sheets would've been a big help.

Re: Guess my Dyno numbers [Re: 10sec440] #2494116
05/09/18 09:31 PM
05/09/18 09:31 PM
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Originally Posted By 10sec440
I don’t think it’s fuel related I have an Innovate AFR gauge and its in the low 12’s and consistent. With the small cam its a torque combination and it drops off after 5900RPM. I’m at 67-6800. If I shift 1-2 and 2-3 at 5800 it ET’s the same as shifting at 6500 but shifting at the lower RPM makes the top end even worse because I’m not as far down the track.


If the plugs show to be rich in the low 12's, I'd lean that puppy out accordingly based on fuel and hang on. With some motors I've worked w/and know about, to a point leaner is meaner and I went faster in the 12.8-13.0 zone than at 12.2's. I've seen dyno pulls of some serious all out n/a motors where max power was in the mid 13's and leaner in some cases........... beer

Last edited by Thumperdart; 05/09/18 10:04 PM.

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Re: Guess my Dyno numbers [Re: Thumperdart] #3176213
09/18/23 11:44 PM
09/18/23 11:44 PM
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10sec440 Offline OP
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I saw this old post and I thought I'd update it just for fun. It would rev up to 7K fast with no problems, but I was only at 1000'. The block was a 400 block I had sonic tested and passed, it had a Hughes girdle and billet steel caps but a bore still cracked after very few runs (after driving 13 hours to the ET Finals no less). So I got another block and half filled it this time and went to a Bullet 277@ .050 .640 lift cam and everything else the same. T&D 1.5 rockers. It was 60 footing 1.28's and was making it almost to the end but I still didn't want to rev it that high. Best ET was 9.77 at 134.60. Keep in mind the air here is very good, in the spring and fall it can go down to -126 feet D.A. It was a bit of an animal with the 4.56's so I went to 4.10's. 60' slowed to a 1.30 but with a new best of 9.62 at 136.6! Then in late 2019 I managed to get my hands on a new Callies 440 block. I tried to sell the low deck complete carb to pan and start over but it had a high price tag because it was all fresh so I didn't find a buyer. I ended up selling just the bare short block so I could reuse mostly everything except the intake on the new RB block. Built the RB pretty much the same, Molnar crank, Molnar Chevy rods, ICON pistons 512cu in. (4.375"x 4.25") I was going to try and get it in the car for the last couple of races but I got the heads on before I realized how far off the new intake ports were and I ran out of time. The new block is upwards of 100lbs heavier so I expect it will run a bit slower but I'll update again when I run it. Thanks for the replies and advice.

Re: Guess my Dyno numbers [Re: 10sec440] #3211823
02/08/24 04:16 AM
02/08/24 04:16 AM
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So I never got to run the Callies block in the car last year. The new RB intake had considerably larger ports than the unported -1 heads so over the winter I matched both to the gasket and did a light porting, more of a blend, and I took a bit out of the guide boss area. I did quite a bit of work to the 4500 intake to match it to a 1" tapered 4 hole spacer. It's too bad I didn't get to dyno the low deck because it would have been neat to compare it to the RB with almost all identical parts. Same cubic inch, same compression, same cam. Heads are probably a bit better than they were, the RB intake has longer, straighter runners than the low deck intake. The block is more stable, bores are thicker so they stay rounder, but I doubt any of that would show up on a dyno. Feb 17 I'm supposed to be on the dyno with it, different guy than last time so it should be a go. Update on the combo- Callies RB block 4.375"x4.25" 10.5:1,Lightly ported Indy -1's and Indy 4500 intake, Bullet 277@ .050" .640 lift, EDM lifters, 1.5 T&D rockers, Pro systems 1150 Dominator. I'll update when it happens!

Re: Guess my Dyno numbers [Re: 10sec440] #3211835
02/08/24 07:22 AM
02/08/24 07:22 AM
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Thanks for the update. I'll be interested in the dyno numbers.


'86 Maple Grove KOS Mopar low qualifier......true street legal with no power adders.

NOS-used when losing since 1940.

Re: Guess my Dyno numbers [Re: 10sec440] #3211902
02/08/24 10:47 AM
02/08/24 10:47 AM
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I genuinely wish you luck if that's a flat tappet. I'd move to a milder solid roller combo which will pick you up. You mentioned head work but, did you ever have a good valvejob done? That will hep the -1's.

Re: Guess my Dyno numbers [Re: HardcoreB] #3211982
02/08/24 02:33 PM
02/08/24 02:33 PM
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I bought the cam and lifters in 2018 and they have been broken in (in another block) so they should be fine. The EDM lifters really help too. I won't run a roller because I make a lot of passes in a year and I can't tell you how many times I've seen someone lose a race or not show up for a round because of a broken roller lifter. The valves were done by Best Machine when I bought the heads.

Re: Guess my Dyno numbers [Re: 10sec440] #3214276
02/18/24 04:06 AM
02/18/24 04:06 AM
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Got it done today! The dyno owner/operator considers his dyno to be on the stingy side for what it's worth. We didn't flog it, just made a few pulls to break everything in, make sure fuel was good and get a number. It's still a bit lean, and it will get leaner in the car with the hood air working so I will be jetting it up when I run it. I have an Innovate AFR in the car so I can tune that at the track. I'm happy with it, a little surprised it dropped off so early I suppose there's no point in shifting at 6600 or 6700. I hope my attachment worked.

DYNOSHEET12024.jpg
Re: Guess my Dyno numbers [Re: 10sec440] #3214323
02/18/24 12:02 PM
02/18/24 12:02 PM
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Give that thing some fuel and run it to 7000!

Re: Guess my Dyno numbers [Re: 10sec440] #3214325
02/18/24 12:12 PM
02/18/24 12:12 PM
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Looks like the dyno was running out of fuel. Hopefully running that lean didn't damage your engine.

Re: Guess my Dyno numbers [Re: AndyF] #3214410
02/18/24 05:10 PM
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He warned me his AFR wasn't working right ahead of time so I had my innovate on it as well which doesn't show on the sheets. It was reading 12.9-13.9 and that was verified by watching the plugs as well.

Re: Guess my Dyno numbers [Re: 10sec440] #3214427
02/18/24 06:40 PM
02/18/24 06:40 PM
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Did you make any pulls higher than 6400?

On the sheet you posted, the highest hp number is on the last line.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
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Re: Guess my Dyno numbers [Re: fast68plymouth] #3214794
02/19/24 11:39 PM
02/19/24 11:39 PM
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No that's as far as we went. I didn't see any point as it had already peaked. Should we have gone higher?

Re: Guess my Dyno numbers [Re: 10sec440] #3214815
02/20/24 04:31 AM
02/20/24 04:31 AM
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Can you post or list your AFR with the RPM, AFR and RPM? luck
Some testing needs to be done in the car, my E85 motor ran 2.5 MPH faster in the 1/4 mile shifting the 2 speed tranny at 7300 RPM versus shifting it at 7000 RPM, every other part of the time slip was almost identical, within .0002 ET, up to the 1000 ft clocks shock shruggy


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Re: Guess my Dyno numbers [Re: 10sec440] #3214835
02/20/24 08:22 AM
02/20/24 08:22 AM
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Getting a data log of your rpm during the run may surprise you . My torqueflite takes at least 200rpm to complete a shift
, so the actual shift point was more than 250 rpm higher than my Conmand Center shift setting. If you are shifting by a tack light, then add delay to that, raising rpm even more. All in all you have a very good combo going hear! Congratulations on a great build. From my history, if i had your combo, i would be leary of any changes that threaten your consistancy, if you desire ro go rounds.


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: Guess my Dyno numbers [Re: gregsdart] #3214844
02/20/24 10:05 AM
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700 with OOTB -1's and a low lift Solid Flat tappet to me seems pretty impressive!

Originally, I was going to go with -1's when the Chapman MW deal kinda fell into my lap.

Your motor and cam is very similar to my 517 (I run a Bullet HR with 264/268 @.050) but what is your ICL?

Your torque is nice and flat....over 600 throughout nearly your entire pull.

I might have revved it 500 past peak, just to see how quickly it fell off and maybe richened the jettting a tad to be safe. But then again, where you peaked is about where I would have expected and from graphing the torque drop off you can pretty much predict it. A bit more intake lift with a -1 might squeaked out a bit more torque but it still a nice power curve.

Congrats, IMO 700 without a lot of RPM and basically pump gas compression is the way to go for a long-lasting bracket motor. no sense chasing the last bit of HP if it takes raising the torque peak higher and stressing the block further.

Last edited by Streetwize; 02/20/24 10:19 AM.

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Re: Guess my Dyno numbers [Re: Streetwize] #3214906
02/20/24 01:12 PM
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Being a consistent round winning durable combination is what I'm after that's why we didn't flog it looking for every last HP. It's a Callies block so I'm not worried about the block and eventually I can and will go bigger, higher compression and a big roller cam eventually. Needless to say I'm pretty happy with it and I will do some more fine tuning when I have it in the car.Thanks!

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