Upgrade from stock... Jasper - Chevy and GMC Duramax Diesel Forum
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Old 06-02-2010, 11:25 AM   eBay Motors  #1 (permalink)
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Upgrade from stock... Jasper

Still in the process of getting my mind straight on what to do!! Have talked to George (Big Dipper) and am convinced I will go to him. But for the heck of it, stopped by a local speed shop owned by a friend of mine, whom I respect immensely. He instantly took off on talking about Jasper transmissions and that all the Suncoast trans start out as Jaspers??? Additionally, he said the Jasper will handle more then I will ever throw at it (they will custom build to what I need)?? Has anyone ever had any experience with a Jasper built trans?? Not planning on going that way, just wanted to know what you all thought of them???
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Old 06-02-2010, 11:30 AM   eBay Motors  #2 (permalink)
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imo just go with George, they sell Jasper trans at Autozone???

trust a guy who has built tons trans that have held.
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Old 06-02-2010, 11:34 AM   eBay Motors  #3 (permalink)
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never heard of anyone mentioning Jasper anything on the forums.

George. hands down.
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Old 06-03-2010, 05:57 PM   eBay Motors  #4 (permalink)
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never heard of anyone mentioning Jasper anything on the forums.

George. hands down.
X2 :rockin
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Old 06-03-2010, 07:44 PM   eBay Motors  #5 (permalink)
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jasper. haha...right.

Go with george and dont think twice/look back.

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Old 06-04-2010, 09:54 AM   eBay Motors  #6 (permalink)
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Jasper is no better than stock at best. Go with George.
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Old 06-04-2010, 10:08 AM   eBay Motors  #7 (permalink)
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jasper high performance allison???? wtf? i dont think they even do high performance stuff...?
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Old 06-04-2010, 09:19 PM   eBay Motors  #8 (permalink)
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thats what I thought!!! I'll leave the gas motors to him and definately going with BigDipper!!
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Banks CAI with Scoop (modified for tire clearance),
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Old 06-04-2010, 09:22 PM   eBay Motors  #9 (permalink)
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I've had lots of experience with the Jasper 4L60E in half ton gassers. They are great for that, much better than stock/Goodwrench. But for Allisons, I'd certainly not be a guinea pig.
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