less rolling resistance?? rotational resistance also
#516474
11/05/09 04:15 AM
11/05/09 04:15 AM
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Joined: Jul 2005
Posts: 1,559 Oh
His and Her 69's
OP
pro stock
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OP
pro stock
Joined: Jul 2005
Posts: 1,559
Oh
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I have been looking for a 9 sec time slip and I am looking into other areas other then motor. (10.14 at 132 with a 1.39 60' best) The motor made 771 hp so I know it has the potential. Car is 3500 with me. I don't like or want fiberglass fenders etc so I know I am loosing some there. But what are some other ideas for me to try to gain some et??
My question is if I sealed up the hood scoop, (maybe .10 sec gain)???
Loose my drum brakes on front and rear, about what gain in et???
Tighten up the front shocks to limit travel, et gain???
What else can I do and expect in et gain?? I don't have the money for a new k member system so this needs to be cheaper items like 1000 or less.
Any suggestions Appreciated. Thanks David
Last edited by His and Her 69's; 11/07/09 05:08 AM.
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Re: less rolling resistance??
[Re: DblOJoe]
#516477
11/05/09 09:27 AM
11/05/09 09:27 AM
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Joined: Dec 2007
Posts: 10,542 BROOK PARK, OH
WILD BILL
Senior Member of the Junior Dragster Club
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Senior Member of the Junior Dragster Club
Joined: Dec 2007
Posts: 10,542
BROOK PARK, OH
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Quote:
Sealing the hood and lighter brakes should do it.
I went from a suregrip and 4 wheel drums to a spool and 4 wheel Wilwoods and my ET dropped much to my surprise. I think it was around .2 or so. I knew the parts were lighter but didn't account for the fact that was rotational weight.
Not to mention the obvious saftey benifits of upgrading your brakes.
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Re: less rolling resistance??
[Re: His and Her 69's]
#516478
11/05/09 09:34 AM
11/05/09 09:34 AM
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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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I think you could get your 9 with just sealing the scoop and re-tuning the carb ... the brakes sure would help
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Re: less rolling resistance??
[Re: cgall]
#516483
11/06/09 03:59 AM
11/06/09 03:59 AM
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Joined: Jul 2005
Posts: 1,559 Oh
His and Her 69's
OP
pro stock
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OP
pro stock
Joined: Jul 2005
Posts: 1,559
Oh
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Thanks guys for the info so far. I will answer some of them so here goes.
#1 a Lighter Driver will Greatly help out but I want to drive it.
#2 I have the alum rad, meziere pump assem, alum driveshaft, light weight wheels, tallest moroso front tires, spool, alum floors, and some other little stuff.
#3 I did have fiberglass bumpers but they got cracked from a ford guy hitting the car in the staging lanes. I put the steel ones on after the new paint was applied so it didn't happen again.
#4 I guess I didn't mean rolling resistance about the brakes it was rotational resistance I was talking about. Getting those big things turning.
#5 I would Love to try one of Bondo's frontends on the car but the money isn't there for something like that. I have a small budget for racing as I have 2 RR's to keep going. His and Hers racing.
#6 I have a decent conv but there may be a little more left in that department so I will be talking to PTC about that.
#7 I already have a parachute for the car so maybe I can just take the brakes off and stop with the chute?? LOL
#8 I may try some header extensions to see what that does also.
I will seal the carb to the hood for next year and maybe try a spacer on it also. I may also try putting the fiberglass bumpers back on as I believe that was close to 50 lbs for the front and back together.
I appreciate the suggestions and hope I can get more suggestions to try.
Thanks Guys David
Last edited by His and Her 69's; 11/06/09 04:08 AM.
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Re: less rolling resistance??
[Re: blownzoom440]
#516485
11/06/09 09:27 AM
11/06/09 09:27 AM
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Joined: Nov 2003
Posts: 6,293 Rock Springs
Bob_Coomer
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master
Joined: Nov 2003
Posts: 6,293
Rock Springs
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Whats your engine Dave? You have a roller yet? PTC does nice work, but If I were going to try to dig up some E/T through the converter I would try Lenny at Ultimate Converters. Back when I ran the Dakota, I ran mild ported 440-1's and a solid flat tappet cam. I switched to a roller, and had the heads CNC ported by MCH. The truck picked up .5 seconds in the 8th mile, and 10 mph....
[color:"red"]65 Hemi Belvedere coming soon [/color] [color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
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Re: less rolling resistance??
[Re: Bob_Coomer]
#516486
11/07/09 05:07 AM
11/07/09 05:07 AM
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Joined: Jul 2005
Posts: 1,559 Oh
His and Her 69's
OP
pro stock
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OP
pro stock
Joined: Jul 2005
Posts: 1,559
Oh
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My engine is a 493 cu, indy sr max wedge ports flow 331 int, 650 solid tappet cam, 1.6 harlon sharps, 1090 king demon, alum rods, ross 13-1 comp, run 114 torko fuel, indy dominator intake, callies 4.150 crank, crank trigger, etc. It dynoed at 771 hp.
I may try the bigger valves but I really don't want to pull the motor apart since it is still fairly new yet. I have 219 181 valves in it now. I don't think I would gain that much by doing the bigger valves. Anyone have any real experience doing the valve swap??
Again Thanks for all the suggestions so far. David
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Re: less rolling resistance??
[Re: His and Her 69's]
#516487
11/07/09 05:45 AM
11/07/09 05:45 AM
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Joined: Jan 2003
Posts: 6,266 Renton Washington
Triple Threat
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master
Joined: Jan 2003
Posts: 6,266
Renton Washington
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I agree there isn't enough to be gained with a valve swap to warrant it. Lightweight brakes would be plus. Where ever else you can take weight out of the car where it won't be seen. Window regulators, back seat, bumpers, bumper brackets and anything else you could think of. It all adds up.
-Dustin 67 Dart, 9 second, 392" G3 Hemi 68 Barracuda 340 F/SA
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