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#1
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What do you think she'll Run?
I just finished putting together a 72 Dart Car weighs 3200 with driver. Motor is a 360 10.1 Mopar crate short block w/ 508 292 cam. Haeds are Edelbrock 6077 untouched w/ crane roller rockers 1.6 ratio. hooker comp headers,M1 single plane with a 800 holley DP, w/ 76 front and 84 rears jets msd billet distributor and msd 6al fires everything.March under drive pulleys and Be cool electric fan keeps thing cool.Trans is a GER perpared 904 with a 2000 stall converter going back to 8 3/4 with 3.91s . Timing is 15 inital 35 total with all in at 1800 rpms . Tires i will be using are 275 60-15 BF Goodrich drag radials. Any guesses at what she'll do or any tips you could offer for a little better performance would be greatly appreciated.
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#2
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beeman, i would think you would run an easy low 13 and maybe if your tuned well mid to upper 12s out of it. that combo sounds pretty good to me.
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#3
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Change the converter to a good 3500-4000 stall and mid to low 12's would be a piece of cake.
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#4
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What altitude are you at? My modified 318 runs @ 4780 ft and 72 primary jets are way to big, 76 secondaries.. By the way your combo sounds good to me also, I am gonna say you need more convertor, like 3200 Turbo action and mid 12's sound real good. Good luck, let us small block guys know how you do.
Swinger321 |
#5
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Everything looks pretty good Beeman, except for the GER tranny, did they build your converter also? Everything they make is complete junk, sorry to have to tell you that but it's the truth.
I run the dual plane rpm air gap intake and a 750 speed demon d.p. carb on mine, with ported edelbrock heads. What rear suspension do you have? I run the 002/003 s.s. springs with no snubber. |
#6
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My combo was almost Identical at one time65 valiant 3100 lbs(360 crate shortblock,10:1,Edelbrock heads,1.5 rockers,508 cam,750 holley,timing 18* initial 36* total,hookers,4 spd with 3,23 posi and drag radials thru the exhaust it went 12.88 at 108 mph 1.8 60 ft)at 4600 ft,corrected was a 12.58 that day.So youll be right there,believe it or not this combo got a best of 18 mpg!!!Ive since gone to a 8.5:1 360 with a 180hp shot of N20 and went 11.80 with slicks,Have fun............PRO.........
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#7
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If the tranny works correctly? and you get traction you should be in the 12's.
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#8
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Run??
Right now: 13.3 to 13 flat, 102. Higher stall, lower gears, bigger cam, sticky tires: low 12s.........let us know, please
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#9
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I concur, you really need a higher stall to get the best out of this combination. a 292/.509" cam needs at least a 3000 stall to get the best out of it.
So I think, 13.1 at 106mph without any changes, and 12.1 at 109mph with the higher stall. You've got a good combination there and with some fine tuning I see no reason why you can't run high 11's. Maybe we should have a competition to see who can guess closest to the real times. You might as well run it as it is and then run it with a higher stall. Let us know how you go!! |
#10
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Run??
Right on!!! How about a pool - verified time slip photos determine winner. Would that be legal?
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#11
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If you do a pool for the first time out, I would have to revise my estimate to about 13.70 since it will take some time to "learn" the combination, like what RPM to leave at, how long to warm up the tires, what tire pressures to run, getting the jetting and timming all dialed in, what is the best shift points, etc.
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#12
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The only thing that puzzles me is the converter. Pretty low stall for the combo. I'd go for a higher stall & smaller dia.
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#13
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I sort of discounted the trans/converter since I figure he would be replacing them soon.
You should use a 10" 3,200 stall converter for the street with that cam, and for strip you should go even small size/higher stall. I hear the GER transmissions are pretty much just a stock rebuild? I rebuild my own transmissions, so I wouldn't know, but I did own a GER 2,800 stall? converter that was junk. |
#14
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Same thing can be said about TCI converters. We with Kimmo needed to file the splines to get it to fit on to a 727. In my own car I have TurboAction 4200 8" and it performs and fits perfectly. I don't know whether TA is ancient history for you guys but it sure works for me great.
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#15
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Good point JariV, My friend with the Challenger put a TCI converter in his 904 (actually it was the second converter from then, first time they sent a 727 converter when we told them it was a 904.) The converter was defective when installed (he had it installed at a transmission shop) so the shop put back the stock converter. We later got a Turbo Action 3,000 stall converter and it worked perfect for his milidly built 318 with 3.55:1 gears.
I don't know if Turbo Action is still around, but I have a Dynamic converter behind the stroker engine and I really like it |
#16
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Hoe fast will she go?
I think your all right. the converter is way to tight. which way do you have better luck? flashing the converter from ideal or puttin it up against the brake at so many rpms the leaving? I'm about sea level or a little above. Anybody ever use the m1 single plane then switch to the edelbrock airgap? Just was interested in the difference at the track. Whats the prize for the closest guess tio the ET i run? i'll let you guys all know. Mopars at the Valley is Sept 29th.
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#17
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Run??
If you make changes before you go, we need to update our estimates. I think we need to base it on ET only, 'cause too many things can make MPH funny. We should take all the runs you make - throw out any where you break parts - average the rest of the runs, and closest guy wins. Everybody who plays should kick in $5 for the pool. After you run, we split the $ with you and the closest guy gets the rest. Honor system. Anybody interested?
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#18
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It's a bit hard for me as I'm in Australia!!
Cloest in ET and MPH wins... ... ... .... ... Wait for it... .... .... ... ... ... .. .. Absolutely nothing!! |
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