03-10-2011, 08:28 PM
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#4
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Windy Corner of a Dirty Street
Join Date: Jun 2003
Location: Pueblo West, Colorado
Posts: 2,926
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Re: NP203 question
As unpopular as the 203’s were (outside of 203/205 doublers) it would be very odd that an 1987 K20 would have a swapped in a TH350 and NP203. Are you sure it isn’t a NP208? Is the case aluminum or cast iron?
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Current vehicle collection:
1978 Chevrolet K10, 8.1L, NV4500, NP205
1989 Chevrolet Suburban, 8.1L, NV4500, NP241
1993 Chevrolet C1500 Sportside, TBI 7.4L, 4L60E
2001 Chevrolet K2500HD, Ext Cab, SWB, 8.1L, ZF 6 speed
2014 Chevrolet Impala LTZ 3.6L
Vortec 8.1L because life is too short to tolerate underpowered vehicles
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