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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: okuma on August 05, 2007, 12:12:28 pm

Title: WATER PUMP DIFFERENCE
Post by: okuma on August 05, 2007, 12:12:28 pm

HOW CAN YOU TELL A SHORT WATER PUMP FROM A LONG WATER PUMP?     WHERE IS THE DIFFERENCE?               THE ENGINE IS A 305.

Title: Re: WATER PUMP DIFFERENCE
Post by: zieg85 on August 05, 2007, 12:19:11 pm

Quote from: okuma on August 05, 2007, 12:12:28 pm

HOW CAN YOU TELL A SHORT WATER PUMP FROM A LONG WATER PUMP?     WHERE IS THE DIFFERENCE?               THE ENGINE IS A 305.

The biggest difference it the short one is right up against the timing chain cover while the long one there is a good amount of clearance, around an inch.

Title: Re: WATER PUMP DIFFERENCE
Post by: red4wd on August 05, 2007, 12:33:39 pm

The easiest way for me to tell is that the long water pump has provisions on one side for the power steering pump mounting and on the other side a provision for the lower alternator bracket.  A short pump has neither.

Title: Re: WATER PUMP DIFFERENCE
Post by: Captkaos on August 05, 2007, 02:55:51 pm

No 73-87(91) trucks ever used a short water pump, and no 305 ever had one either from the factory due to the fact that all used the new bracket system.

Title: Re: WATER PUMP DIFFERENCE
Post by: okuma on August 05, 2007, 04:44:53 pm

thanks for your responce, but it just hectic every time i ask for something on my engine salesmen always ask this question...... dam-mm it they both seemed identical to me. I was on the verge of installing an electric water pump. if i do this what are the ups and downs on this conversion?

Title: Re: WATER PUMP DIFFERENCE
Post by: VileZambonie on August 05, 2007, 07:10:26 pm

(http://images.chevyhiperformance.com/techarticles/p114852_image_large.jpg)

Title: Re: WATER PUMP DIFFERENCE
Post by: VileZambonie on August 05, 2007, 07:12:26 pm

http://www.chevyhiperformance.com/techarticles/49718_small_block_pumps_pulleys_brackets/index.html

No need for an electric waterpump