BB P/s pump question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

HeavyD · 02-08-2005, 02:11 AM

This is for anyone who has swapped in a big block: On original trucks I see a power steering reservoir used, but is this necessary when swapping in a 454 from a mid 70's truck? What did the later trucks use? Thanks.

**kwmech** · 02-08-2005, 02:24 AM

The earlier trucks used the short water pump which did not allow room for the reservoir and filler neck, the later models had the longer pump.

HeavyD · 02-08-2005, 02:34 AM

So if I use a long water pump I can use a regular pump that will resemble a set up like a 350 would have? Thanks.

**kwmech** · 02-08-2005, 02:44 AM

Close, the longer water pumps have the alternator on the pass side and the AC above the PS pump, so if you have AC it requires a little bit different pump reservoir that tips forward of the AC bracket that bolts to the front of the head.

HeavyD · 02-08-2005, 02:55 AM

There will be no A/C on this truck. So, I guess I am asking can I just take the complete mid 70's 454 truck engine and drop it into the 70 GMC I have?

Tx Firefighter · 02-08-2005, 10:00 AM

Sure, why not?

It's all together and working in the later model truck. What truck it's bolted in to shouldn't affect anything. As long as you use everything as a matched set of pulleys and brackets off the later model truck.

Bob Moore · 02-08-2005, 01:52 PM

I installed a 454 with a long pump setup - alt. on pass side and power steering. I used 72 BB motor mounts so motor is in stock location. I have very little space between the fan and the 4 core radiator. This set up is using a clutch fan and the clearance is TIGHT.

Without the clutch fan you will have more clearance but I recommend the short pump if you can swing it.

02-08-2005, 02:11 AM	#1
HeavyD Senior Member Join Date: Sep 2004 Location: Wakaw, Sask, Canada Posts: 3,180	BB P/s pump question This is for anyone who has swapped in a big block: On original trucks I see a power steering reservoir used, but is this necessary when swapping in a 454 from a mid 70's truck? What did the later trucks use? Thanks. __________________ "You can take the man out of PA, but you can't take PA out of the man"

02-08-2005, 02:34 AM	#3
HeavyD Senior Member Join Date: Sep 2004 Location: Wakaw, Sask, Canada Posts: 3,180	So if I use a long water pump I can use a regular pump that will resemble a set up like a 350 would have? Thanks. __________________ "You can take the man out of PA, but you can't take PA out of the man"

02-08-2005, 02:55 AM	#5
HeavyD Senior Member Join Date: Sep 2004 Location: Wakaw, Sask, Canada Posts: 3,180	There will be no A/C on this truck. So, I guess I am asking can I just take the complete mid 70's 454 truck engine and drop it into the 70 GMC I have? __________________ "You can take the man out of PA, but you can't take PA out of the man"

02-08-2005, 10:00 AM	#6
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Sure, why not? It's all together and working in the later model truck. What truck it's bolted in to shouldn't affect anything. As long as you use everything as a matched set of pulleys and brackets off the later model truck. __________________ I'm on the Instagram- @Gearhead_Kevin

02-08-2005, 01:52 PM	#7
Bob Moore Registered User Join Date: Feb 2004 Location: Tacoma WA Posts: 1,365	BB with Long WP I installed a 454 with a long pump setup - alt. on pass side and power steering. I used 72 BB motor mounts so motor is in stock location. I have very little space between the fan and the 4 core radiator. This set up is using a clutch fan and the clearance is TIGHT. Without the clutch fan you will have more clearance but I recommend the short pump if you can swing it. __________________ 67 C-20 LWB, tilt, speed alert, vac, 454, T400 67 C-10 SWB, factory air with more to follow

02-08-2005, 02:24 AM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,628	The earlier trucks used the short water pump which did not allow room for the reservoir and filler neck, the later models had the longer pump.

02-08-2005, 02:44 AM	#4
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,628	Close, the longer water pumps have the alternator on the pass side and the AC above the PS pump, so if you have AC it requires a little bit different pump reservoir that tips forward of the AC bracket that bolts to the front of the head.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.