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#41 |
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Join Date: Nov 2007
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the automatic can be pricey as well,if your serious about turning the earth its not uncomon to have 5,6,7converters on the shelf.like jeff states the clutch technology has come around gmonde
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#42 |
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Join Date: Jun 2007
Location: from Vancouver BC Canada, now in Nova Scotia
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Although they don`t come up for sale all that often, there can be some good deals on a used Jerico. Both my Jericos were bought used, the first one was from Terry Sherrills 57 Vette SS/AM, and last year I bought the other one from this forum. The one from Terry had very few runs since he had it freshened, the 2nd one was just used, and came with a steel flywheel, 2 new sintered iron discs, a pressure plate, PLUS a chromeMoly driveshaft, all to fit a 5.0 FOX Mustang, which was perfect for my Stocker. Both trans also came with the Long V gate shifters, and I only paid $2,000 each for them. The nice thing with my Jerico`s is, you can run them for years, and usually sell them down the road for the same money! Can`t do THAT with an automatic! Something to consider with used Jericos, however, make sure you are getting the drag race version (DR4), as oppossed to a oval track, or road race version. The gearing in the roundy round trans are normally way too tall for drag racing, and as I understand it, the heat treat on the gears is much harder (brittle) compared to a drag trans.Most Jericos on Ebay are round track boxes, although the odd DR4 does pop up now & then.
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NHRA 6390 STK M/S 85 Mustang |
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#43 |
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Thanks Jeff and everybody else as well. Which system is lighter? From the back of the block to the tailshaft end is there much difference? I'm guessing the stick saves a few pounds. My glide used 8 qts.of oil. I didn't use a tranny cooler. I'm also guessing the stick doesn't get as hot and would not need oil changes as often. Jesse
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Jesse Knapp 4899 STK, SS |
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#44 |
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Join Date: Sep 2007
Location: Henderson, NV
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the lightest 4 speed Jerico, with magnesium case, is 68 lb. without shifter.
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#45 |
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I see where Bret McFarland is running A/SA at the Indy points race. It looks like it's the same car he has been running in A stick for many years. I'd like to know what he thinks after this weekend. This is a discussion that I have had with many of my stick guys for years. The one thing that we always agree upon is that we disagree. The converters slip for 1300ft and the clutch's lock up after 100 ft. I have always felt it must be worth a least a tenth. Barry
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#46 |
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I agree with that Barry. Guess I called it drag or holding back, but I believe convertors slip somewhat all the way down track. Once the stick launches, and I assume there is some tire spin there, it's a direct connection. My opinion, correct me if I am wrong. This is mainly why I think a stick could be quicker, provided the driver is deadly. Seems like the lower hp cars would or could widen the gap. This is a very interesting topic. Jesse
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Jesse Knapp 4899 STK, SS |
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#47 |
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I could have sworn Bret's stick car was a 67 or 68. The car he has at Indy is a 69. If I remember correctly, Bret blew the engine in the stick car Saturday night at Gainesville.
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Alan Roehrich 212A G/S |
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#48 |
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A good torque converter multiplies torque at between 2:1 and 2.25:1, approximately, at the RPM it flashes to, and the torque multiplication begins to taper off as engine RPM exceeds that flash RPM, the more the engine RPM exceeds the flash RPM, the less the converter multiplies torque. Slippage is the price for this torque multiplication. If you work with the converter company and both of you do your job well, the slippage should probably get down to around 4% to 8% (on a higher HP car, some low HP cars never get close to a low slippage percentage). As you go from flash RPM to your peak RPM, slippage decreases. You can never completely eliminate slippage, but you can get close.
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Alan Roehrich 212A G/S |
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#49 |
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Looking through the indexes I saw the sticks .05, .10, or .15 lower than automatics. Exceptions are AA, L, M, and T stock each having the same indexes. The AA category hasn't been around long to be adjusted, but what about the rest? Why did NHRA set the indexes quicker, for the most part, for the stick cars. Record in A/S is amazingly 9.88 (Steve Ficacci) and with a 396 engine. I know the 68 is a lighter car but has any A/SA cars gone this quick? Is the stick the culpret here, lol? Jesse
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Jesse Knapp 4899 STK, SS |
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#50 | |
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