Pulley Kit Suggestions?
Thread Starter
Instructor
Joined: May 2005
Posts: 222
Likes: 0
Pulley Kit Suggestions?
One of my belts jumped off the pulley and bound things up to the point where my water pump broke and crank pulley was bent.
I'm looking for a new, affordable pulley kit. A reduction kit would be nice if I could gain some power. Any suggestions?
I'm looking for a new, affordable pulley kit. A reduction kit would be nice if I could gain some power. Any suggestions?
Drifting
Joined: Apr 2008
Posts: 1,305
Likes: 2
From: Lewisburg WV
thegazman
If your looking for a performance pulley kit after you get your problems fixed, Summit Racing and Jegs Racing sell a March billet performance pulley set for a C3 Vette for a little over $200. I'm converting my C3 to an electric fan and using the pulley kit. It's a slight HP gain and less strain on the water pump shaft with out the big fan.
Ken
Ken
Drifting
Joined: Sep 2007
Posts: 1,572
Likes: 51
From: Wichita Kansas
Wow!! I have never seen this happen before. I hope other parts are not damaged.
Thread Starter
Instructor
Joined: May 2005
Posts: 222
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Thanks for the replies. I will probably rebuild with stock pulley system. My crank pulleys are damaged and water pump pulley is slightly damaged. Also, small chip out of the shroud and fan is bloken. Luckily block, radiator and hood are okay.
I noticed and confirmed at the parts stores that the fan/alt belt is thinner than the fan/AC belt. As a result, the fan/AC belt rides up higher in the groves (near top). I think this is the one than may have jumped out at 5500 rpm. The fan/alt belt rides lower in the pulley groves. Can I run a thinner belt for fan/AC? This way both would ride lower in the grooves and I would have some of the pulley up above the top of the belt. Comments are appreciated. Anyone have stock pulley for sale?
Thanks,
Jeff
I noticed and confirmed at the parts stores that the fan/alt belt is thinner than the fan/AC belt. As a result, the fan/AC belt rides up higher in the groves (near top). I think this is the one than may have jumped out at 5500 rpm. The fan/alt belt rides lower in the pulley groves. Can I run a thinner belt for fan/AC? This way both would ride lower in the grooves and I would have some of the pulley up above the top of the belt. Comments are appreciated. Anyone have stock pulley for sale?
Thanks,
Jeff
Intermediate
Joined: Apr 2008
Posts: 36
Likes: 0
From: Glendale AZ
If your looking for a performance pulley kit after you get your problems fixed, Summit Racing and Jegs Racing sell a March billet performance pulley set for a C3 Vette for a little over $200. I'm converting my C3 to an electric fan and using the pulley kit. It's a slight HP gain and less strain on the water pump shaft with out the big fan.
Melting Slicks
Joined: Sep 2007
Posts: 2,429
Likes: 0
From: Tucson AZ
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Drifting
Joined: Apr 2008
Posts: 1,305
Likes: 2
From: Lewisburg WV
thegazman
My March performance pulley system is a belt system. I've heard stories about how people have to modify their cross member to accommodate a serpentine system. These part number are for a 1977-82 Vette. I don't know why it won't go back to 1971. I think that's when Corvette started putting unique water pumps on (3/4" shaft).
Anyway here's the numbers, Jegs...655-5050, 655-5030, 655-5070. Summit Racing...MCH5050, MCH 5030, MCH 5070. The different parts are for different pulley configurations (number of groves on the crankshaft and water pump pulley) One thing I like is the groves are deeper than stock to help prevent belt from coming off during high RPMS.
Ken
Anyway here's the numbers, Jegs...655-5050, 655-5030, 655-5070. Summit Racing...MCH5050, MCH 5030, MCH 5070. The different parts are for different pulley configurations (number of groves on the crankshaft and water pump pulley) One thing I like is the groves are deeper than stock to help prevent belt from coming off during high RPMS.
Ken
Intermediate
Joined: Apr 2008
Posts: 36
Likes: 0
From: Glendale AZ
My March performance pulley system is a belt system. I've heard stories about how people have to modify their cross member to accommodate a serpentine system. These part number are for a 1977-82 Vette. I don't know why it won't go back to 1971. I think that's when Corvette started putting unique water pumps on (3/4" shaft).
Anyway here's the numbers, Jegs...655-5050, 655-5030, 655-5070. Summit Racing...MCH5050, MCH 5030, MCH 5070. The different parts are for different pulley configurations (number of groves on the crankshaft and water pump pulley) One thing I like is the groves are deeper than stock to help prevent belt from coming off during high RPMS.
Ken
Anyway here's the numbers, Jegs...655-5050, 655-5030, 655-5070. Summit Racing...MCH5050, MCH 5030, MCH 5070. The different parts are for different pulley configurations (number of groves on the crankshaft and water pump pulley) One thing I like is the groves are deeper than stock to help prevent belt from coming off during high RPMS.
Ken
Drifting
Joined: Apr 2008
Posts: 1,305
Likes: 2
From: Lewisburg WV
thegazman
Molldog12....I haven't had any problems with mine. However, I must admit I don't really drive my car very hard. The belts fit fairly deep into the groves and seem like they would slip less than original pulleys.
Ken
Ken
