Convert sb to BB - The 1947 - Present Chevrolet & GMC Truck Message Board Network

69Chevyman · 03-03-2003, 08:44 PM

What all will i need bracket and pulley wise to complete the swap from small block to BB? Also what all will work on both (Distr. and etc.)?? Thanks

Orence1 · 03-03-2003, 10:45 PM

Do you have power steering? If so, you will need a different pump as well as the brackets for it. How will you mount your alternator? Once you know which side you want to mount it, the bracket picture will be clearer. If you want AC, the alternator will need to be on the drivers side. If no AC, you can go either side depending on what brackets you use. Distributor should work on both. Most guys would recommend a 4-core radiator which will require some wider radiatior brackets and a bit of surgery on the bottom of your core support to get the new bracket to sit flat. Hope this helps. Good luck.
Larry

69Chevyman · 03-04-2003, 12:32 AM

yes i have power steering and i am taking my a/c off when i do the swap so that is not a concern. I need a new pump??? I just got a new radiator so what all will i need to get for the swap?

crazy longhorn · 03-04-2003, 01:08 AM

You will need the eng mounts & stands for the BB(for clearance on the exhaust), & they will position a little differently than the SB stands.......the D shaft will need to be shortened a bit

Longhorn Man · 03-04-2003, 01:15 AM

try to get everythign off of one engine...less headache trying to line up pullies that way

69Chevyman · 03-04-2003, 01:36 AM

I will have to shorten my driveshaft???????????????? Why is that i am not changing trannies.

crazy longhorn · 03-04-2003, 01:38 AM

The eng mounts /stands for the BB will move things slightly rearward, due to different positioning of the eng.

69Chevyman · 03-04-2003, 01:56 AM

how much will it cost to shorten my driveshaft?? How much will these swap end up costing me besides the actually engine???

crazy longhorn · 03-04-2003, 02:03 AM

To shorten & balance the shaft isnt too bad, it runs in the $75-$125 range in my area. If you do a swap that needs lenghtened.....that hurts, as the shaft needs retubed. The rest will be what it costs for brackets,mounts, exhaust & odds & ends. Good luck, crazyL

03-03-2003, 08:44 PM	#1
69Chevyman Registered User Join Date: Mar 2002 Location: Tyler, Texas, USA Posts: 28	Convert sb to BB What all will i need bracket and pulley wise to complete the swap from small block to BB? Also what all will work on both (Distr. and etc.)?? Thanks __________________ 1969 CST Black w/Black interior, dual Flowmaster turndowns, 4-6x9s in the doors, Sony Explod cd player, American Racing wheels w/275's, Edelbrock Intake, Edelbrock 750 carb

03-04-2003, 12:32 AM	#3
69Chevyman Registered User Join Date: Mar 2002 Location: Tyler, Texas, USA Posts: 28	yes i have power steering and i am taking my a/c off when i do the swap so that is not a concern. I need a new pump??? I just got a new radiator so what all will i need to get for the swap? __________________ 1969 CST Black w/Black interior, dual Flowmaster turndowns, 4-6x9s in the doors, Sony Explod cd player, American Racing wheels w/275's, Edelbrock Intake, Edelbrock 750 carb

03-04-2003, 01:36 AM	#6
69Chevyman Registered User Join Date: Mar 2002 Location: Tyler, Texas, USA Posts: 28	I will have to shorten my driveshaft???????????????? Why is that i am not changing trannies. __________________ 1969 CST Black w/Black interior, dual Flowmaster turndowns, 4-6x9s in the doors, Sony Explod cd player, American Racing wheels w/275's, Edelbrock Intake, Edelbrock 750 carb

03-04-2003, 01:56 AM	#8
69Chevyman Registered User Join Date: Mar 2002 Location: Tyler, Texas, USA Posts: 28	how much will it cost to shorten my driveshaft?? How much will these swap end up costing me besides the actually engine??? __________________ 1969 CST Black w/Black interior, dual Flowmaster turndowns, 4-6x9s in the doors, Sony Explod cd player, American Racing wheels w/275's, Edelbrock Intake, Edelbrock 750 carb

03-03-2003, 10:45 PM	#2
Orence1 Registered User Join Date: Jan 2000 Location: Bothell, WA Posts: 548	Do you have power steering? If so, you will need a different pump as well as the brackets for it. How will you mount your alternator? Once you know which side you want to mount it, the bracket picture will be clearer. If you want AC, the alternator will need to be on the drivers side. If no AC, you can go either side depending on what brackets you use. Distributor should work on both. Most guys would recommend a 4-core radiator which will require some wider radiatior brackets and a bit of surgery on the bottom of your core support to get the new bracket to sit flat. Hope this helps. Good luck. Larry

03-04-2003, 01:08 AM	#4
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,403	You will need the eng mounts & stands for the BB(for clearance on the exhaust), & they will position a little differently than the SB stands.......the D shaft will need to be shortened a bit

03-04-2003, 01:15 AM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	try to get everythign off of one engine...less headache trying to line up pullies that way

03-04-2003, 01:38 AM	#7
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,403	The eng mounts /stands for the BB will move things slightly rearward, due to different positioning of the eng.

03-04-2003, 02:03 AM	#9
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,403	To shorten & balance the shaft isnt too bad, it runs in the $75-$125 range in my area. If you do a swap that needs lenghtened.....that hurts, as the shaft needs retubed. The rest will be what it costs for brackets,mounts, exhaust & odds & ends. Good luck, crazyL



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