SB to BB swap? Whats needed? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

F-85 · 08-03-2010, 01:21 PM

Helping my buddy work on his 77 C10. It has all accessories A/C, power steering, alt. Its got a th350.

Anything special need to be done to swap in a BB with a th400?

Big Port Jimmy 6 · 08-03-2010, 06:47 PM

I just took a 454 tbi out complete with accessories. It would bolt right in. Let me know if you are interested.

F-85 · 08-03-2010, 07:19 PM

Quote:

Originally Posted by Big Port Jimmy 6

I just took a 454 tbi out complete with accessories. It would bolt right in. Let me know if you are interested.

Thanks, but probably gonna go old school and use a 396.

thebabybrahma · 08-03-2010, 09:03 PM

make sure you get the brackets for the accessories you will run. power steering was the bear for me, i didn't have the brackets I needed.
Hooker 2455 headers work nice.
get a 3 or 4 core radiator- i put a 3 core in mine with a Ford Taurus electric fan.
everything else went OK.

benoit454 · 08-03-2010, 09:42 PM

the 350 to 400 swap is gonna require some driveshaft and crossmember repositioning I'd think.

BigBlocksRule · 08-04-2010, 12:06 AM

Easiest and best way to get it done is to buy a kit and use some serpentine brackets off of an early 90's 350 TBI engine. Run an ad in your local Craiglist, you should be able to buy the serpentine brackets for $75 or less (I gave $75 for mine and it came with P/S pump, alternator and A/C condenser) and the adapter kit is around $100. Sorry I don't have a link, but do a search and you should be able to find the adapters.

08-03-2010, 01:21 PM	#1
F-85 Registered User Join Date: Jul 2010 Location: Paw Paw,il Posts: 389	SB to BB swap? Whats needed? Helping my buddy work on his 77 C10. It has all accessories A/C, power steering, alt. Its got a th350. Anything special need to be done to swap in a BB with a th400?

08-03-2010, 06:47 PM	#2
Big Port Jimmy 6 Addicted to Rust Join Date: Dec 2009 Location: Abbeville SC Posts: 1,030	Re: SB to BB swap? Whats needed? I just took a 454 tbi out complete with accessories. It would bolt right in. Let me know if you are interested. __________________ Current trucks: (48 GMC100 320 inliner) Gone (48 Suburban in pieces) Sold 87 GMC CCSB 5.3 4l60E Daily Driver ECTA National record holder XO/PP We never really grow up, we just learn how to act in public.

08-03-2010, 09:03 PM	#4
thebabybrahma Registered User Join Date: Sep 2007 Location: Gray,Tennessee Posts: 182	Re: SB to BB swap? Whats needed? make sure you get the brackets for the accessories you will run. power steering was the bear for me, i didn't have the brackets I needed. Hooker 2455 headers work nice. get a 3 or 4 core radiator- i put a 3 core in mine with a Ford Taurus electric fan. everything else went OK. __________________ '85 C-10, with 93 LT-1 & 4L60 1985 GMC, lookin' for its big block motor - SOLD '72 Chevy C-10 Cheyenne-SOLD

08-03-2010, 09:42 PM	#5
benoit454 Chris Join Date: Nov 2004 Location: Monaville, WV Posts: 3,737	Re: SB to BB swap? Whats needed? the 350 to 400 swap is gonna require some driveshaft and crossmember repositioning I'd think. __________________ Chris GIT R DONE!!!!!! Check out all our rides, http://www.cardomain.com/id/benwa454

08-04-2010, 12:06 AM	#6
BigBlocksRule Registered User Join Date: Jun 2008 Location: Lubbock, TX Posts: 2,047	Re: SB to BB swap? Whats needed? Easiest and best way to get it done is to buy a kit and use some serpentine brackets off of an early 90's 350 TBI engine. Run an ad in your local Craiglist, you should be able to buy the serpentine brackets for $75 or less (I gave $75 for mine and it came with P/S pump, alternator and A/C condenser) and the adapter kit is around $100. Sorry I don't have a link, but do a search and you should be able to find the adapters. Last edited by BigBlocksRule; 08-04-2010 at 12:07 AM.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.