Short vs Long Water pump for SBC ?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

westgl · 03-14-2013, 01:20 PM

I have a 1967' C10, and I am doing SBC conversion from inline 6, to SBC 350.

What is the reasoning for a Short vs Long water pump?

Mr Chevorlet · 03-14-2013, 01:27 PM

If i am not mistaken it depends on alternator brakets and power sterring and pullies, things like that for the water pump to line up but i might be way off base here, some one else here will know for sure though.

67ChevyRedneck · 03-14-2013, 01:28 PM

No idea. But gm used the short on trucks up to 72 and long on 73+ trucks. You can use either but beware! Each has different brackets/pulleys for everything! So use whatever pump you have all the brackets/pulleys for. Trust me, swapping from one to the other can get expensive fast. I used a 350 out of a mid 70s truck and had ps and ac for short set up so had to track down/buy all the correct pulleys/brackets for the other stuff.
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Aaron Burkemper · 03-14-2013, 01:36 PM

If you are not worried about being period correct, go with the long water pump. Brackets and accessories are MUCH easier to find, including serpentine setups if you eventually go that route.

westgl · 03-14-2013, 01:53 PM

So based on my Pulley & bracket set up.

All that I have currently is still on the Inline 6, engine, is there any chance that those would work?

**wesmigletz** · 03-14-2013, 02:01 PM

It's been a while, but the Water Pump pulley may work. I would go with a SWP set-up. It will look correct and all components could be swapped to any future SBC swap.

67ChevyRedneck · 03-14-2013, 02:42 PM

Sounds like it's time for a junkyard run to pull everything you need off another 350. I don't think much if anything tranfers from I6 to sbc. I bought a 100% complete blown pontiac 350 because I had no parts at all for my pontiac motor. Paid $250 for complete 69 subframe/motor (I needed subframe too). I'm going to save a ton with everything I got.
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Fldawg · 03-14-2013, 03:14 PM

I used the long pump on mine bought a billet w/p pulley and crank pulley and everything else was stock and works fine

**kwmech** · 03-14-2013, 03:16 PM

Since you are swapping from a 6 to a v8, you can place the engine in the big block location, use a serpentine kit (long water pump) with fan and all with a big block shroud. You have to redo the exhaust and everything anyways, so setting the engine back an inch or 2 from the standard small block location won't be a big deal. Another thing, if you can find some big block stands you could also use some later model exhaust manifolds, unless you plan on headers

72bowtiestepper · 03-14-2013, 04:46 PM

As stated before..long water pump brackets are easier to find in the boneyards. Chevy cars like camaro , chevelle ,full size chevs all used the long pump from 1969 up...big blocks were different though.

03-14-2013, 01:20 PM	#1
westgl Registered User Join Date: Oct 2009 Location: Central Point, Oregon Posts: 166	Short vs Long Water pump for SBC ?? I have a 1967' C10, and I am doing SBC conversion from inline 6, to SBC 350. What is the reasoning for a Short vs Long water pump? __________________ 1967 Chevy C10 Lwb I6-250ci 3spd manual trans Future Projects, Power Brakes, Front Discs, Power Steering, Paint Frame, New 350ci engine Bored .040 357ci Magnum, Vortec Heads, Comp XE262 Cam, Performer EPS Intake, 650CFM Carb, Rebuilt Trans 700r4, 2000-rpm stall, Completely Rebuild & Upgrade Front & Rear Suspension & Steering Components, Suspension Drop 3.5" & 5" Drop, 1.250 Sway bar,

03-14-2013, 01:27 PM	#2
Mr Chevorlet Rusty Nuts Join Date: Sep 2008 Location: Clever Missouri Posts: 1,338	Re: Short vs Long Water pump for SBC ?? If i am not mistaken it depends on alternator brakets and power sterring and pullies, things like that for the water pump to line up but i might be way off base here, some one else here will know for sure though. __________________ (Clever Missouri) Southwest Larry Mr Chevrolet My Build, The Marathon Truck http://67-72chevytrucks.com/vboard/s...d.php?t=604414

03-14-2013, 01:28 PM	#3
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: Short vs Long Water pump for SBC ?? No idea. But gm used the short on trucks up to 72 and long on 73+ trucks. You can use either but beware! Each has different brackets/pulleys for everything! So use whatever pump you have all the brackets/pulleys for. Trust me, swapping from one to the other can get expensive fast. I used a 350 out of a mid 70s truck and had ps and ac for short set up so had to track down/buy all the correct pulleys/brackets for the other stuff. Posted via Mobile Device __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!

03-14-2013, 01:36 PM	#4
Aaron Burkemper Registered User Join Date: Sep 2011 Location: New Melle, MO Posts: 104	Re: Short vs Long Water pump for SBC ?? If you are not worried about being period correct, go with the long water pump. Brackets and accessories are MUCH easier to find, including serpentine setups if you eventually go that route. __________________ 1971 C20 "Shreck" 1980 C30 dump bed "Ratchett"

03-14-2013, 01:53 PM	#5
westgl Registered User Join Date: Oct 2009 Location: Central Point, Oregon Posts: 166	Re: Short vs Long Water pump for SBC ?? So based on my Pulley & bracket set up. All that I have currently is still on the Inline 6, engine, is there any chance that those would work? __________________ 1967 Chevy C10 Lwb I6-250ci 3spd manual trans Future Projects, Power Brakes, Front Discs, Power Steering, Paint Frame, New 350ci engine Bored .040 357ci Magnum, Vortec Heads, Comp XE262 Cam, Performer EPS Intake, 650CFM Carb, Rebuilt Trans 700r4, 2000-rpm stall, Completely Rebuild & Upgrade Front & Rear Suspension & Steering Components, Suspension Drop 3.5" & 5" Drop, 1.250 Sway bar,

03-14-2013, 02:01 PM	#6
wesmigletz Senior Member Join Date: Feb 2009 Location: Parker, Texas Posts: 685	Re: Short vs Long Water pump for SBC ?? It's been a while, but the Water Pump pulley may work. I would go with a SWP set-up. It will look correct and all components could be swapped to any future SBC swap. __________________ 1970 2WD K5 1968 Camaro Conv 1967 Chevy SWB 1964 Malibu SS 1957 Corvette Pics www.picturetrail.com/wesmigletz

03-14-2013, 02:42 PM	#7
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: Short vs Long Water pump for SBC ?? Sounds like it's time for a junkyard run to pull everything you need off another 350. I don't think much if anything tranfers from I6 to sbc. I bought a 100% complete blown pontiac 350 because I had no parts at all for my pontiac motor. Paid $250 for complete 69 subframe/motor (I needed subframe too). I'm going to save a ton with everything I got. Posted via Mobile Device __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!

03-14-2013, 03:14 PM	#8
Fldawg Registered User Join Date: Jan 2011 Location: Lynn Haven Florida Posts: 1,019	Re: Short vs Long Water pump for SBC ?? I used the long pump on mine bought a billet w/p pulley and crank pulley and everything else was stock and works fine

03-14-2013, 03:16 PM	#9
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,480	Re: Short vs Long Water pump for SBC ?? Since you are swapping from a 6 to a v8, you can place the engine in the big block location, use a serpentine kit (long water pump) with fan and all with a big block shroud. You have to redo the exhaust and everything anyways, so setting the engine back an inch or 2 from the standard small block location won't be a big deal. Another thing, if you can find some big block stands you could also use some later model exhaust manifolds, unless you plan on headers

03-14-2013, 04:46 PM	#10
72bowtiestepper Registered User Join Date: Feb 2013 Location: Northwest NJ Posts: 684	Re: Short vs Long Water pump for SBC ?? As stated before..long water pump brackets are easier to find in the boneyards. Chevy cars like camaro , chevelle ,full size chevs all used the long pump from 1969 up...big blocks were different though.



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