Short water pump VS long water pump? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

41GMC · 07-12-2009, 12:16 AM

I have a 72 truck and due to material on hand have installed a 350 engine with a long water pump. Now I cannot find a lower radiatior hose to fit it. I cannot go back and istall a short pump due to using an aluminum procomp timing cover that is so thick that the short pump will not seat.

Can anyone help me with a manufacturer and part number for a hose that works?

Thanks

71stroker · 07-12-2009, 11:25 AM

41GMC- is the hose to long to fit or is the angle on the waterpump outlet wrong? I would try trimming a stock one to fit if possible.

My 72 truck has a short pump on it and the motor in it came from a 78 chevy c-10 with a long pump. My issue is that you cant get to the timing mark with a timing light. With the long pump on it you checked the timing between the pump and the timing chain cover. Now the short pump sits against the cover and I have no way to check the timing. I just set it by ear now. Anyone else have this issue?

41GMC · 07-12-2009, 12:34 PM

The stock hose for a short pump is all wrong in angle due to difference in pump inlet location.

41GMC · 07-12-2009, 12:35 PM

Actually the short pump is wrong in both bend angles and lengths.

07-12-2009, 12:16 AM	#26
41GMC Registered User Join Date: Apr 2009 Location: Port Orchard, WA Posts: 3	Re: Short water pump VS long water pump? I have a 72 truck and due to material on hand have installed a 350 engine with a long water pump. Now I cannot find a lower radiatior hose to fit it. I cannot go back and istall a short pump due to using an aluminum procomp timing cover that is so thick that the short pump will not seat. Can anyone help me with a manufacturer and part number for a hose that works? Thanks

07-12-2009, 11:25 AM	#27
71stroker Registered User Join Date: Apr 2008 Location: Burney, California Posts: 50	Re: Short water pump VS long water pump? 41GMC- is the hose to long to fit or is the angle on the waterpump outlet wrong? I would try trimming a stock one to fit if possible. My 72 truck has a short pump on it and the motor in it came from a 78 chevy c-10 with a long pump. My issue is that you cant get to the timing mark with a timing light. With the long pump on it you checked the timing between the pump and the timing chain cover. Now the short pump sits against the cover and I have no way to check the timing. I just set it by ear now. Anyone else have this issue? __________________ 1971 K10 1/2 ton short fleetside, 4 in. lift, sm465/np205, 383 waiting to go in. 1972 K10 short fleetside converted to 3/4 ton, 12 in. lift, t.350/np205, sbc 350. 1970 C10 short fleetside, saginaw 3 spd, no motor. 1971 GMC 3/4 ton 2wd suburban parts truck.(gutted) 1970 GMC 1/2 ton 4wd suburban t.350/np205 no motor parts truck.

07-12-2009, 12:34 PM	#28
41GMC Registered User Join Date: Apr 2009 Location: Port Orchard, WA Posts: 3	Re: Short water pump VS long water pump? The stock hose for a short pump is all wrong in angle due to difference in pump inlet location.

07-12-2009, 12:35 PM	#29
41GMC Registered User Join Date: Apr 2009 Location: Port Orchard, WA Posts: 3	Re: Short water pump VS long water pump? Actually the short pump is wrong in both bend angles and lengths.



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