underdrive pulleys?

Tech discussions on the L77 6.0L V8.
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CrashTestDummy
Posts: 1723
Joined: Sat Feb 07, 2015 8:31 pm
Location: Pearland, Texas

underdrive pulleys?

Post by CrashTestDummy » Tue May 16, 2017 1:51 pm

Has anyone installed underdrive pulleys on their car? I'm wondering which units work?

We purchased our 96 SS with a crank underdrive pulley, and have seen zero issues with it. The steering is fine, and while the headlights get a bit dim when sitting at a light, we have otherwise had no issues with the electrical system on the car, and it's running an electric water pump.

Just wondering. I figure it could free up some parasitic HP, and if you're already in there doing cam swaps and so forth, why not? I just can't figure out which pieces to pick up.
Gene Beaird,
Pearland, Texas
2012 Caprice 9C1
1992 B4C 1LE Camaro
2010 Tahoe PPV (her car)
1995 DGGM Impala SS
1996 BBB Impala SS (11-second DD)
1985 Firebird - 310 LS1 C Prepared autocross car.
And some others
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Navy Lifer
Administration Staff
Posts: 1488
Joined: Tue Mar 19, 2013 11:30 pm
Location: Canton GA

Re: underdrive pulleys?

Post by Navy Lifer » Wed May 17, 2017 1:05 am

This one should work:

http://www.rockauto.com/en/moreinfo.php ... 91&jsn=589" onclick="window.open(this.href);return false;

CrashTestDummy
Posts: 1723
Joined: Sat Feb 07, 2015 8:31 pm
Location: Pearland, Texas

Re: underdrive pulleys?

Post by CrashTestDummy » Wed May 17, 2017 3:33 pm

Thanks. I'll have to keep that one in mind when/if we do a cam change on our car.
Gene Beaird,
Pearland, Texas
2012 Caprice 9C1
1992 B4C 1LE Camaro
2010 Tahoe PPV (her car)
1995 DGGM Impala SS
1996 BBB Impala SS (11-second DD)
1985 Firebird - 310 LS1 C Prepared autocross car.
And some others
Do YOU have my SPID?

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