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Old 03-21-2019, 11:27 AM   #1
Senior Member
Join Date: Jan 2018
Location: Durham, North Carolina
Posts: 308
Silverado NV3500 Info Needed

I have been doing a ton of research about the NV3500 but I wanted to try to confirm information.

Trans: 2000 NV3500 (came off a 4.3L)
Engine: 2000 4.8L (originally automatic engine)

What I have found out that the 99-00 Manual 4.8L Engine had a longer crank than the 99-00 Automatic engines and the 01-06 Manual Engines. This has posed some questions for me.

What I have is:
02 Flywheel (Sachs NFW1050) - heard this is thicker than the 99-00 due to the different crank
02 Clutch Kit with Pilot Bearing
00 Throwout Bearing

Is the 00 throwout bearing the same as the later years (just without a feed line)? Do you see any issues using the 00 throwout with the later model clutch/flywheel? I am hoping they are the same as far as extension and the short crank on my engine is compensated with the later model/thicker flywheel if that makes sense.
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Old 03-22-2019, 01:23 PM   #2
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Join Date: Oct 2008
Location: Wentworth, NH
Posts: 3,473
Re: Silverado NV3500 Info Needed

See the Novak writeup about crank extensions on the GEN III LS motors. They have recommendations for clutch and flywheel selection at the bottom of this page along with a link for more details.

Make sure you don't have one of the 3/4 ton 4.8 with the GEN I crank projection and LS bolt pattern.
1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8

RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
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