Re: Combo Changes / Opnions?
[Re: JACK1440]
#1600045
03/29/14 04:42 PM
03/29/14 04:42 PM
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Joined: May 2004
Posts: 3,210 robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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Just an observation but your car seems quite heavy for an A body. Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
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Re: Combo Changes / Opnions?
[Re: JACK1440]
#1600046
03/29/14 05:47 PM
03/29/14 05:47 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Jim, I kinda just went with whatever rpm the combo requires. I was shifting @ 6900 I'm thinking 7300 now. The rockers are 1.5 crane golds. We've had pretty good luck with them. Nick @ compu-flow has used the grind a few other times in .500's. The tranny is a plain jane 727.
Raff, the heads flowed those numbers @ .700.
Ron, wishful would be in the 9.70 range but, I never like to set my expectation too high. Too many years of the motors sounding great in the garage and then they didn't run. lol
The reason I asked was that if it has greater lift than the max flow lift it has all that extra flow time(it sees the max flow twice, on the up and down with all the extra between the max)that was something that I failed to do because I wimped out on lift thinking I would have spring issues.... but I was way wrong
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Re: Combo Changes / Opnions?
[Re: 383man]
#1600050
03/29/14 08:28 PM
03/29/14 08:28 PM
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Joined: May 2004
Posts: 3,210 robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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Thanks Jack It dont pull the wheels as high as yours though. Lol I hope you get that .2 you're looking for. Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
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Re: Combo Changes / Opnions?
[Re: deaks]
#1600051
03/29/14 10:13 PM
03/29/14 10:13 PM
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Joined: Mar 2006
Posts: 9,848 MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,848
MI, usa
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My 572 runs a 285/292 on 112 LCA. It's installed at 108. I run a 727 w/ a 4.10. The comp ratio is 14.8-1. I state all this because my car is weak in 60 and 330. I have more cubes, compression, starting line ratio. The last 511 Indy we put together was a friends 68 GTX. 11-1, glide, 2900lbs, 5.14 gear 286@.050 int duration it ran 6.20 1/8. We swapped the cam to 268@.050 with no other changes, 5.85 1/8. Sounds like a lot of duration to me. I definitely would install it advanced. Doug
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Re: Combo Changes / Opnions?
[Re: Sport440]
#1600053
03/29/14 11:34 PM
03/29/14 11:34 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Jack, I think your to big in the cam department. With a Roller Im thinking 275 @ .050 .650 to .700 lift if you can get it.
Otherwise like 451Jim stated you will need a new vert. I myself think sometimes less is more.
At 12.5 comp a 500 ci can make 750 HP with a 265* @.050 .650 roller.
I think his lift is fine.. if not a bit short... the duration.. well thats a bit much(JMO) but if thats what I have I'd advance it a good bit
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Re: Combo Changes / Opnions?
[Re: Sport440]
#1600055
03/30/14 03:13 AM
03/30/14 03:13 AM
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Joined: Jan 2003
Posts: 10,010 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,010
Frostbitefalls MN (Rocky&Bullw...
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I have 528 cubes, 440-1 heads, 15.1/1 compression and of four cam company's' recommendations, none are over 284 @ .050 on the intake, 292 exhaust, and most favor a 110 LSA. The current cam is 283/296 112 and didn't show much if any improvement over a 280/290/110 Isky I started with, that has only 197 at .200 intake lobe duration versus 203 minimum on the rest. All this tells me is that there is a very big diminishing return on duration after about 278 on the intake, and in your case you have less cubes and less compression. I am with the crowd that likes less duration. My 499 motor with 440-1 heads had a 283/290 Ultradyne in it, on a 110, and that one ran OK. My guess is you need to be about there or less.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Combo Changes / Opnions? (Track Trip Update)
[Re: JACK1440]
#1600059
09/20/14 11:27 AM
09/20/14 11:27 AM
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Joined: May 2004
Posts: 3,210 robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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It sounds like fun Do you run an A/F gauge ? and are you happy with the results ?
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
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