gear drive
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Elder User
Joined: May 2009
Posts: 514
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From: Long Island
gear drive
I have a Pro Comp gear drive that came with no instructions. Is there anything special I should know about installing it? It has the thrust washer but I've seen posts that say you should always have a cam button as well. It's going in a 429.
Thanks,
Jerry
Thanks,
Jerry
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Moderator
Joined: Aug 2002
Posts: 6,099
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From: Southern California
It's also not unusual to see a 5-10 hp reduction (depending on the redline) as a result of the increased friction. gear drives are very accurate in terms of setting cam/crank timing, but they were intended for very high rpm applications (8000 rpm+) where piston/valve clearance becomes extremely critical (as compared to running less than 7000 rpm). For street and most street/strip engines, a nylon coated double roller timing chain/gear set is more than adequate in terms of cam/crank timing accuracy and longetivity.
Tuned
Joined: Dec 2008
Posts: 292
Likes: 11
From: Yakima, WA
Interesting guess sometimes race parts should stay on the track. 8000 for me would be bent pushrods and probably some valves through the pistons. I would only advise that if your single or have a disposable income. Women have a hard time wondering why you have to have a $15000 motor LOL.
