underdrive pulley???
Burning Brakes
Joined: Feb 2003
Posts: 1,144
Likes: 18
From: Panhandle FL
Re: underdrive pulley??? (1990CORVETTE)
Do some research, I think with some C4's you have to remove the rack and pinion steering to install the pulley.So what looks like a no brainer turns into a whole bag of worms. :chevy
Melting Slicks
Joined: Jun 2001
Posts: 2,525
Likes: 1
From: Sarasota, FL
Re: underdrive pulley??? (SPEED750)
I got my underdrive crank pulley from a forum member. I did my '88 from the top without removing the rack. My frisbee was gone and I may have had to loosen and move a few small things, but the biggest headache was getting a new belt. I just cut my old one, move the tensioner so that the belt measurement would be the smallest, wrapped the old cut one aound marked it and went to the store so that I could compare it to new ones.
Bob
Bob
Le Mans Master
Joined: Apr 2000
Posts: 6,341
Likes: 1
From: Shelton CT
Re: underdrive pulley??? (1990CORVETTE)
I don't think you can use a camaro underdrive pulley set, as those accessories are routed differently. If you were to stick to a single pulley for the crank only, that would probably work, but you'd have to guess at the belt you'd need to use, and your charging will be noticeably lower, aswell as waterpump speeds will change too. I have a 3 piece pulley set (March Power Amp series), and have been happy with it for 3+ years now. They did not have to pull the steering to put it on my '85..
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: underdrive pulley??? (1990CORVETTE)
I don't know if the F-body pully will fit but I strongly suggest an underdrive crank with an overdrive alt pulley to avoid weak charging at idle issues.
The March data sheet shows different part numbers for Corvette vs F-body crank pulley, so I suspect they are not interchangable.
The March data sheet shows different part numbers for Corvette vs F-body crank pulley, so I suspect they are not interchangable.
Race Director
Joined: Aug 2002
Posts: 13,356
Likes: 0
From: tucson AZ
St. Jude Donor '04 & '05
Re: underdrive pulley??? (1990CORVETTE)
Gosh, just an FYI for you. I use the March Amp 3 pulley system on my '84, with no charging issues.
But then I also use a 140 alt.
Don't know if this helps.
Good Luck
tony
:flag
But then I also use a 140 alt.
Don't know if this helps.
Good Luck
tony
:flag
