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Old 02-22-2008, 01:55 PM   #1 (permalink)
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700r4 np203 combo questions

i retired my 78 2500 full size after frame damage and stripped the drive train to build a new rig. i've since put together a 87 k5 blazer with my crate 350, dana 44 front and gm 14 bolt rear from the 78. it came with a 700r4 / np208 combo. i would like to run the 700r4 with the np203 from the 78. the 203 was hooked up to a turbo 350 with 27 splines on the output.

will this work??? can i change the output shaft on the 700r4 to match the turbo 350????

thanks for any help
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Old 02-22-2008, 03:14 PM   #2 (permalink)
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to answer my question..... yes they will, both the turbo 350 and the 700r4 have the 27 spline output shaft
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Old 02-22-2008, 06:03 PM   #3 (permalink)
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you just need extension piece between your trans and transfercase adapter/support part... i dont remember length of this part (between 3-4") but 208 is having longer adapter than 203 where is basically only an inch or so thick cast piece wich bolt to trans and where case is fitted.
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