Re: Guess my Dyno numbers
[Re: 10sec440]
#2494116
05/09/18 09:31 PM
05/09/18 09:31 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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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...........
Last edited by Thumperdart; 05/09/18 10:04 PM.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Guess my Dyno numbers
[Re: 10sec440]
#3211823
02/08/24 04:16 AM
02/08/24 04:16 AM
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Joined: Jan 2003
Posts: 1,278 Mission BC
10sec440
OP
pro stock
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OP
pro stock
Joined: Jan 2003
Posts: 1,278
Mission BC
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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!
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Re: Guess my Dyno numbers
[Re: 10sec440]
#3211835
02/08/24 07:22 AM
02/08/24 07:22 AM
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Joined: Nov 2011
Posts: 287 PA
Harry's Taxi 2
enthusiast
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enthusiast
Joined: Nov 2011
Posts: 287
PA
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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.
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Re: Guess my Dyno numbers
[Re: 10sec440]
#3214427
02/18/24 06:40 PM
02/18/24 06:40 PM
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Joined: Jan 2003
Posts: 14,506 So. Burlington, Vt.
fast68plymouth
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I Live Here
Joined: Jan 2003
Posts: 14,506
So. Burlington, Vt.
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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 Dealer for Comp Cams/Indy Heads
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Re: Guess my Dyno numbers
[Re: 10sec440]
#3214815
02/20/24 04:31 AM
02/20/24 04:31 AM
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Joined: Aug 2003
Posts: 43,228 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,228
Bend,OR USA
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Can you post or list your AFR with the RPM, AFR and RPM? 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
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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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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Joined: Jan 2003
Posts: 10,011 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
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Posts: 10,011
Frostbitefalls MN (Rocky&Bullw...
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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
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Re: Guess my Dyno numbers
[Re: gregsdart]
#3214844
02/20/24 10:05 AM
02/20/24 10:05 AM
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Joined: Jan 2003
Posts: 9,876 Weddington, N.C.
Streetwize
master
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master
Joined: Jan 2003
Posts: 9,876
Weddington, N.C.
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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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