What problems will I have with a V-Belt, long pump SB pulley setup in my 67? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**passthebuck** · 01-18-2009, 01:51 PM

I'm in the setup stages of the motor swap portion of my build up, & I have a running 327 with a long water pump V Belt pullet setup that I'm planning to put into my 67GMC. I'm wondering what problems will I run into with this setup? Lower rad hose? Shroud/clutch fan issues? I'm sure this has been seen before & I'd like to not have to collect a whole other set of pullies & brackets for a short pump setup. I'm going to place the motor in the correct V8 location. Thanks for your help & advice!

corn · 01-18-2009, 02:14 PM

If you get all of your accessories for a long pump style engine you should be fine. Your alternator will be on the passenger side though so you might have to make the wires longer is all. Im not sure about the clutch fan, but Im guessing it will have to go.

EyeH8the24 · 01-18-2009, 02:16 PM

running long pump on mine with no problems...still have the fan clutch for now ,no issues but i am converting to elec fans soon.

Andy4639 · 01-18-2009, 02:37 PM

I maybe wrong but...You swap from a long pump to a short pump you will need all new brackets.

Longhorn Man · 01-18-2009, 07:11 PM

As indicated, you'll need the acc brackets that match your water pump. if you don't have them already, I HIGHLY recomend getting them ALL from one car... or a couple cars of the same make/model/engine. There were quite a few variables over the years, and if you don't get it right, you'll be pulling your hair out.
An other advantage to getting them all from one car, you can get the belts for that year/make/model/engine when you dgo to the parts house, which is WAY easier than trying to get the right belts based on length and width of the pullys.

**passthebuck** · 01-18-2009, 07:21 PM

I have all the brackets on the motor & it's running true & straight. I was looking at the fact that these trucks didn’t come with long water pumps. I was wondering specifically if I would have a problem with getting the right lower rad hose or getting a fan shroud to work with my clutch fan. Thanks again!

Andy4639 · 01-18-2009, 07:29 PM

You may run into a problem with the long pump sticking the fan and clutch to far inside the shroud. Since you say clutch I assume you are going to run A/C on this truck and if you do then you want about a 1/4 of the fan blade inside the shroud and the rest out.

**john** · 01-18-2009, 07:55 PM

I shortened my shroud by 1-1/4" off the lip. Seems to work well.

Longhorn Man · 01-18-2009, 08:05 PM

Honestly, if you have a good rad and pump, you can probably get away running without one.
My old small block longhorn, and small block c/1500 (same engine in both) never ran hot, and that was in texas... one was with the short pump, the other was long... then my caddy big block longhorn never overheats either... none had shrouds.

01-18-2009, 01:51 PM	#1
passthebuck Sisyphus was my mentor! Join Date: Sep 2002 Location: Carleton Place, Ontario CANADA Posts: 984	What problems will I have with a V-Belt, long pump SB pulley setup in my 67? I'm in the setup stages of the motor swap portion of my build up, & I have a running 327 with a long water pump V Belt pullet setup that I'm planning to put into my 67GMC. I'm wondering what problems will I run into with this setup? Lower rad hose? Shroud/clutch fan issues? I'm sure this has been seen before & I'd like to not have to collect a whole other set of pullies & brackets for a short pump setup. I'm going to place the motor in the correct V8 location. Thanks for your help & advice! __________________ passthebuck #5642 -TWO 1967 GMC 910's. One with L6/3-on-the tree and the other with 355 w/435hp & a 700r4. -a 2013 Honda Civic as my "sensible" car Last edited by passthebuck; 01-18-2009 at 02:53 PM. Reason: spelling

01-18-2009, 02:14 PM	#2
corn Registered User Join Date: Dec 2003 Location: here Posts: 5,789	Re: What problems will I have with a V-Belt, long pump SB pulley setup in my 67? If you get all of your accessories for a long pump style engine you should be fine. Your alternator will be on the passenger side though so you might have to make the wires longer is all. Im not sure about the clutch fan, but Im guessing it will have to go.

01-18-2009, 02:16 PM	#3
EyeH8the24 Registered User Join Date: Dec 2004 Location: beulah,alabama Posts: 1,075	Re: What problems will I have with a V-Belt, long pump SB pulley setup in my 67? running long pump on mine with no problems...still have the fan clutch for now ,no issues but i am converting to elec fans soon.

01-18-2009, 02:37 PM	#4
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: What problems will I have with a V-Belt, long pump SB pulley setup in my 67? I maybe wrong but...You swap from a long pump to a short pump you will need all new brackets. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

01-18-2009, 07:11 PM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: What problems will I have with a V-Belt, long pump SB pulley setup in my 67? As indicated, you'll need the acc brackets that match your water pump. if you don't have them already, I HIGHLY recomend getting them ALL from one car... or a couple cars of the same make/model/engine. There were quite a few variables over the years, and if you don't get it right, you'll be pulling your hair out. An other advantage to getting them all from one car, you can get the belts for that year/make/model/engine when you dgo to the parts house, which is WAY easier than trying to get the right belts based on length and width of the pullys.

01-18-2009, 07:21 PM	#6
passthebuck Sisyphus was my mentor! Join Date: Sep 2002 Location: Carleton Place, Ontario CANADA Posts: 984	Re: What problems will I have with a V-Belt, long pump SB pulley setup in my 67? I have all the brackets on the motor & it's running true & straight. I was looking at the fact that these trucks didn’t come with long water pumps. I was wondering specifically if I would have a problem with getting the right lower rad hose or getting a fan shroud to work with my clutch fan. Thanks again! __________________ passthebuck #5642 -TWO 1967 GMC 910's. One with L6/3-on-the tree and the other with 355 w/435hp & a 700r4. -a 2013 Honda Civic as my "sensible" car

01-18-2009, 07:29 PM	#7
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: What problems will I have with a V-Belt, long pump SB pulley setup in my 67? You may run into a problem with the long pump sticking the fan and clutch to far inside the shroud. Since you say clutch I assume you are going to run A/C on this truck and if you do then you want about a 1/4 of the fan blade inside the shroud and the rest out. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

01-18-2009, 07:55 PM	#8
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: What problems will I have with a V-Belt, long pump SB pulley setup in my 67? I shortened my shroud by 1-1/4" off the lip. Seems to work well. __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/

01-18-2009, 08:05 PM	#9
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: What problems will I have with a V-Belt, long pump SB pulley setup in my 67? Honestly, if you have a good rad and pump, you can probably get away running without one. My old small block longhorn, and small block c/1500 (same engine in both) never ran hot, and that was in texas... one was with the short pump, the other was long... then my caddy big block longhorn never overheats either... none had shrouds.



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