Re: 572 all aluminum headed to dyno
[Re: fast68plymouth]
#3015584
02/15/22 07:48 AM
02/15/22 07:48 AM
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Joined: Jan 2003
Posts: 10,049 MN
JERICOGTX
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I Live Here
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I'd rather have a stingy dyno sheet, and a happy time slip, than a happy dyno sheet, and stingy time slip. The 572 Andy built is going to make a great bracket engine for the customer.
69 GTX
68 Road Runner
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Re: 572 all aluminum headed to dyno
[Re: AndyF]
#3024116
03/15/22 08:59 AM
03/15/22 08:59 AM
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Joined: Jan 2003
Posts: 16,932 NC
440Jim
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The 572 is in the car and getting ready to go to the track. First track day here is March 26, forecast calls for rain so we'll see if it happens. They were planning to run a PG behind this engine but the Reid case has never shown up so they put the 727 back in the car. Had already built a new crossmember and loop for the PG so all of that stuff had to be cut out and redone. Sucks to be building cars when everything is on backorder. Ugh! Welded the new stuff and had to cut it out. Pain in the butt.
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Re: 572 all aluminum headed to dyno
[Re: AndyF]
#3026561
03/22/22 09:15 PM
03/22/22 09:15 PM
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Joined: Jan 2003
Posts: 31,082 Oregon
AndyF
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Finally got it running well enough that it can go to the track. The cam used in this engine was not EFI friendly! I think this was the most work I've ever had to do to get a tune dialed in. It wasn't too hard to find a happy spot for idle, but the off idle area was super difficult to nail down. The engine would die as soon as it went into gear and it wouldn't do anything when the pedal was slowly depressed. Finally figured out that this engine works okay with a lean idle, but it wants a bunch of fuel added as soon as the pedal is moved off idle. Anyway, got the tune wrapped up and then loaded the car onto the trailer so they can take it to the track on the next sunny day.
Last edited by AndyF; 03/22/22 09:16 PM.
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Re: 572 all aluminum headed to dyno
[Re: AndyF]
#3026643
03/23/22 06:03 AM
03/23/22 06:03 AM
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Joined: Jan 2003
Posts: 10,049 MN
JERICOGTX
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I Live Here
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What does the car weigh race ready?
69 GTX
68 Road Runner
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Re: 572 all aluminum headed to dyno
[Re: JERICOGTX]
#3026709
03/23/22 11:38 AM
03/23/22 11:38 AM
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AndyF
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What does the car weigh race ready? Ready to run without a driver is 3000 lbs. Not sure on the distribution, I'd have to look up the scale info.
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Re: 572 all aluminum headed to dyno
[Re: 572B1]
#3027982
03/27/22 09:07 AM
03/27/22 09:07 AM
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Joined: Jan 2003
Posts: 16,932 NC
440Jim
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Thats about 772 hp at the engine. going by the wallace calculator. Using 9.36 at 143 mph: Wallace at 3000 lbs: HP computed from your vehicle ET is 721. flywheel HP Wallace at 3200 lbs: HP computed from your vehicle ET is 769. flywheel HP. Adding 200 lbs for driver. It made 870 power at 6800 and 760 torque at 5400. Shifting as early as they did, it should go quicker when they are ready to rev it higher. Using 9.00 ET: Wallace at 3200 lbs: HP computed from your vehicle ET is 865. flywheel HP (about what the dyno measured).
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Re: 572 all aluminum headed to dyno
[Re: 440Jim]
#3027993
03/27/22 09:39 AM
03/27/22 09:39 AM
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Joined: May 2004
Posts: 855 Brisbane Australia
572B1
super stock
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super stock
Joined: May 2004
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Brisbane Australia
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Thats about 772 hp at the engine. going by the wallace calculator. Using 9.36 at 143 mph: Wallace at 3000 lbs: HP computed from your vehicle ET is 721. flywheel HP Wallace at 3200 lbs: HP computed from your vehicle ET is 769. flywheel HP. Adding 200 lbs for driver. It made 870 power at 6800 and 760 torque at 5400. Shifting as early as they did, it should go quicker when they are ready to rev it higher. Using 9.00 ET: Wallace at 3200 lbs: HP computed from your vehicle ET is 865. flywheel HP (about what the dyno measured). Jim, my comment was as it stands 772 hp at 3200 lbs including driver. not what it may do in the future.
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Re: 572 all aluminum headed to dyno
[Re: AndyF]
#3028089
03/27/22 04:02 PM
03/27/22 04:02 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
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The Moroso chart shows a 9.40 for 143mph.
Power to weight of 4.44
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 572 all aluminum headed to dyno
[Re: fast68plymouth]
#3028101
03/27/22 04:30 PM
03/27/22 04:30 PM
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Joined: Oct 2015
Posts: 570 UK
rb446
mopar
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mopar
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Wallace> 765fwhp@3200lbs 60 Foot E.T. : 1.30 Seconds 1/8 Mile E.T. : 5.92 Seconds 1/8 Mile Trap Speed : 114.78 MPH 1/4 Mile E.T. : 9.39 Seconds 1/4 Mile Trap Speed : 143 MPH 865fwhp 3200> 60 Foot E.T. : 1.25 Seconds 1/8 Mile E.T. : 5.68 Seconds 1/8 Mile Trap Speed : 119.58 MPH 1/4 Mile E.T. : 9.01 Seconds 1/4 Mile Trap Speed : 149 MPH http://www.wallaceracing.com/accel-calc.phpalways used this for years, input weight and change hp for ET/mph at sea level numbers.
Last edited by rb446; 03/27/22 04:35 PM.
1969 'Cuda 446ci, best 9.96@133.9 in 1990 1971 340 'Cuda, best 11.01@122.8 in 1987
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