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New Best - and through the mufflers too
#518676
11/07/09 10:59 PM
11/07/09 10:59 PM
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440Jim
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I set a new best today, and it was using mufflers (which I don't normally run). They were 4" bullet mufflers, but they are mufflers! At Maryland International Raceway (MIR) in Budds Creek Maryland, they are having their big "World Cup" (import vs domestic) street car race. Today was time trials and qualifying for the various classes. Sunday is eliminations. http://www.mirdrag.comAll classes require mufflers, and the only thing I could fit my car in after adding mufflers was the "Street ET" class which only requires headlights, tail/brake lights, and mufflers. Anyway my car went a new best (for E85) with a 1.229 sixty foot and 9.215 at 142 mph. It also backed up that run with another 1.229 and 9.217. 56 degrees, 41% RH, 30.21"Hg
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Re: New Best - and through the mufflers too
[Re: 440Jim]
#518677
11/07/09 11:12 PM
11/07/09 11:12 PM
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440Jim
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I guess I should also post the combo summary: 4.250" Stroke Callies Crankshaft, 4.375" bore, 511 CID BEST Machine aluminum main caps, 400 block align bored to 440 main size SCAT H-beam rods, ARP 2000 bolts, 6.535" long, 2.200/0.990 Milodon windage tray with custom crank scraper welded on Indy 440-1 heads, 68cc, 0.700" 350. cfm, 0.800" 368. cfm Titainium retainers, 2.25" intake valve Flat top pistons, 13.5 CR Indy 400-3 intake, Comp Cams solid lifter 305º/320º@.020", 279º/287º@.050", 197º/200º@.200", 110 LSA (not a roller) published 0.650"/0.630" but I am running 1.6 rockers for .690"/.670" Ron's Flying Toilet mechanical injection, http://www.ronsfuel.comCustom built headers, 2-1/8” tubes 32" long, 4” collector 727 trans, 5400 stall converter, 4.30 gears in a Dana 60 rear Phoenix slicks 31.25 x 12.2 W, actual 32.0 x 13.6 3210 lbs with driver
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Re: New Best - and through the mufflers too
[Re: 440Jim]
#518680
11/07/09 11:32 PM
11/07/09 11:32 PM
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Anonymous
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Anonymous
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congrats on the new best. so what did that air desity work out to be?
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Re: New Best - and through the mufflers too
#518681
11/07/09 11:38 PM
11/07/09 11:38 PM
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440Jim
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Quote:
so what did that air desity work out to be?
That's about -300 ft DA (below sealevel standard density)
The high pressure, low temp, and low track elevation (80 ft) really helps. I almost didn't go, but I was glad I did to take advantage of the good air.
The barometric pressure was dropping all day, and was down to 30.10"Hg by the end of the day.
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Re: New Best - and through the mufflers too
[Re: 440Jim]
#518684
11/08/09 03:57 AM
11/08/09 03:57 AM
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Joined: Feb 2003
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fullmetaljacket
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Re: New Best - and through the mufflers too
[Re: Plumcrazyracing]
#518687
11/08/09 06:08 AM
11/08/09 06:08 AM
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440Jim
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The wheelie bars came with the car, so I don't know the brand. I will have to measure the length, but they are not real long.
EDIT: The bars measure 51" long, plus a few inches from the bar mount to the center of the axle.
They did have springs, but this year I took them out and put solid spacers in them. It works fine for me, but I use front end travel limiting to match track conditions (air/power level) to balance the weight transfer and not hit the wheelie bars too hard. But it does use them to control the wheel stand.
You can see the wheelie bars in this attachment from 2002.
Last edited by 440Jim; 11/08/09 07:48 AM.
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Re: New Best - and through the mufflers too
[Re: 440Jim]
#518690
11/08/09 11:22 AM
11/08/09 11:22 AM
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Joined: Jan 2003
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Frostbitefalls MN (Rocky&Bullw...
gregsdart
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You sure do have your ride sorted out. You made 807 hp on that day, going by the 5.825 formula. That is a whole lot of oats gettin burned!! Congrats on the new best. By the way, curious just what your front/rear weights are?
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: New Best - and through the mufflers too
[Re: gregsdart]
#518693
11/09/09 01:13 AM
11/09/09 01:13 AM
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440Jim
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Quote:
By the way, curious just what your front/rear weights are?
I will have to look it up, it was a few years ago, but as I recall the front end is heavy. And I think that is why this car must wheel stand or the tires will spin; it needs the weight transfer.
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Re: New Best - and through the mufflers too
[Re: 440Jim]
#518695
11/09/09 08:53 AM
11/09/09 08:53 AM
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Joined: Jan 2003
Posts: 13,416
Marion, South Carolina [><]
an8sec70cuda
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Congrats Jim!!!  CHIP
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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Re: New Best - and through the mufflers too
[Re: an8sec70cuda]
#518696
11/09/09 12:39 PM
11/09/09 12:39 PM
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Joined: Jan 2003
Posts: 3,104
Wheels up, MO
nhramark
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You and your car are impressive, as always. I'm curious though, your 60' is WAY fast for the et and the mph a little low. Maybe too much gear or converter? Just wondering. Congrats on the new best. 
[image]http://s1126.photobucket.com/user/nhramark1/library/Racing[/image]
9.100 @ 150 mph
5.780 @ 120 mph
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Re: New Best - and through the mufflers too
[Re: nhramark]
#518697
11/09/09 12:49 PM
11/09/09 12:49 PM
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440Jim
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Mark, I just don't know. This car has always showed better ET than the mph indicates. In the present combo, I have the shift light at 6500 rpm, and cross the finish line about 6900. When I changed from the 4.56 gears to the 4.30 gears, nothing changed (sixty foot, ET or mph) just lowered the finish line rpm. When I took the 5400 rpm 8" converter out and put in a 5400 9", it runs exactly the same. I think the chassis is making good use of the horsepower/torque available to run those ETs. Then again, many people at this ET are running 2-speed transmissions and killing their starting line ratio. In the summer, it would run 1.27, 9.35, 140 mph. This fall weather (cool, dry, high baro) with the Ron's injection is making insane sixty foot times! Then again, maybe it is the flat tappet solid lifter cam that makes better torque, but not horsepower, than a roller cam... 
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Re: New Best - and through the mufflers too
[Re: gregsdart]
#518701
11/09/09 10:32 PM
11/09/09 10:32 PM
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440Jim
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Quote:
By the way, curious just what your front/rear weights are?
I dug out the log book from 2004 when I found a track with a scale that was pretty flat driving on and off. So I put the front wheels on then the total, then the backs only:
Front: 1768
Rear : 1400
It is even worse now since I don't use the 5 gallon fuel cell in the trunk, but rather a 4 gallon in the front for the mechanical pump on the injection. Plus I gained some weight since then, etc. for the total now with me at 3210.
428RR,
I have been running solid lifter cams (flat tappet) forever. I already had the push rods, springs, cam, dist drive, etc. so changing to a roller cost more money. Maybe someday, but it won't be a spring killing agressive roller if I ever do.
I lost count how many years I ran my old Scott Brown cam and lifters. I put the current CC cam in the car in 2008. I still have the cam and lifters from that build for my "back up" (spare parts) motor. It was 272/280 at 0.050" and I ran it in everything from my 451 to my 511 CID.
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