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Old 11-08-2003, 03:53 PM
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timing cover to pump clearance

I'm installing the Proform high tech series engine dress kit to my Chevy small block. It comprises of rocker covers, air cleaner and timing cover which are all finished in a metallic gray enamel. My question is, and it's a simple one, do all water pumps sit firm against the timing cover? Coz mine does. I don't like that at all as the cover would become marked/scratched. It's a cast iron w/pump that has a plate at the rear which is not totally flat - this is what makes contact with the timing cover. Now, I understand there are long and short water pumps. Would a long pump have more clearance at the rear? Or is it just longer at the front? And do longer water pumps cause the belt pulleys to be misaligned requiring modifications? Like I said, it's a simple dilemma but annoying never the less. Do some after market pumps have more clearance at the rear? It's just a shame to see such a beautiful cover get bruised and be obscured from your eyes. Rob

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Old 11-08-2003, 04:57 PM
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Short water pumps sit right against the timing cover,but most long pumps are about 1/4" away. I have a aftermarket alum timing cover on my truck with a short pump and theres like .010" clearance.
If you did swap to a long pump all your accessory brackets and pulleys would no longer work.You might double up on the waterpump gaskets to gain some clearance.
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Old 11-08-2003, 08:13 PM
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Just leave it how it is. How many times do you think people are going to take your water pump off and see the scratches on the cover. Assuming of course that it would be scratched only where the two make contact.
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Old 11-09-2003, 12:52 AM
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I got a long style and i have at least a inch of clearance.. the only down fall is your pulley's.. u also have to realize that your moving your fan if its a clutch fan of some sort closer to the rad.. so careful on your clearance there if u got for the long style pump.
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