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#1 |
Registered User
Join Date: Oct 2012
Location: Memphis, Tn.
Posts: 219
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converting from BB 2 SB...questions
Ok so my 396 is out and will need a total rebuild, not wanting to spend a million dollars to do so I am going to find a 350 to replace it with for right now. I have researched and found that the TH 400 will bolt up to the small block and that I can use my distributer, alternator and starter.
My questions are what engine mount differances are there? And where would I need to look for SB mounts if I will need them? Also does the water pump inlet and outlet go the same way as the BB? In my quest for a SB, is there any differance in the engine mount locations? I know I will probably have to go with an electric fuel pump if I find a newer engine. The plan is to find a newer engine and convert it to carb and run some headers. If any of you guys have make this conversion please offer any information that may save some grief, Thanks.............
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Victory will only be achieved through superior firepower and trusting in the Lord. SOLD 68 C-10. http://67-72chevytrucks.com/vboard/s...d.php?t=560975 SOLD 2000 Silverado...http://67-72chevytrucks.com/vboard/s...=1#post6492671 87 V-10 4X4 http://67-72chevytrucks.com/vboard/s...d.php?t=643898 |
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#2 |
Senior Member
![]() Join Date: Aug 2010
Location: Asheville, North Carolina
Posts: 1,855
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Re: converting from BB 2 SB...questions
I believe all small blocks have the same engine mounts. They are different then the big block mounts and you can pick them up for around 20-30 bucks no problem. I think that should be about the only thing that you'll have to adjust going from big to small block
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ANDREW 1972 Chevy SWB Cheyenne Super JANE http://67-72chevytrucks.com/vboard/s...d.php?t=462072 1972 GMC Jimmy PENNY http://67-72chevytrucks.com/vboard/s...d.php?t=735827 1968 GMC patina swb PEARL http://67-72chevytrucks.com/vboard/s...d.php?t=731315 1972 Chevy K20 BRUCE http://67-72chevytrucks.com/vboard/s...d.php?t=805788 |
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#3 |
Registered User
Join Date: Oct 2012
Location: Memphis, Tn.
Posts: 219
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Re: converting from BB 2 SB...questions
Thanks for the imput, I am thinking this is the cheapest out for right now just to get things goin.
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Victory will only be achieved through superior firepower and trusting in the Lord. SOLD 68 C-10. http://67-72chevytrucks.com/vboard/s...d.php?t=560975 SOLD 2000 Silverado...http://67-72chevytrucks.com/vboard/s...=1#post6492671 87 V-10 4X4 http://67-72chevytrucks.com/vboard/s...d.php?t=643898 |
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#4 |
Senior Member
![]() Join Date: Mar 2003
Location: Colfax-California
Posts: 8,518
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Re: converting from BB 2 SB...questions
You can use the same mounts if you want, the only thing you'll have to change is the brackets on the front of the engine for the accessories and the exhaust......maybe the fan shroud, unless you go with the long water pump stuff
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#5 |
Senior Member
![]() Join Date: Aug 2010
Location: Asheville, North Carolina
Posts: 1,855
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Re: converting from BB 2 SB...questions
I completely understand. As long as you're keeping that block and heads with the truck then you aren't doing anything that can't be undone. I promise if you sold that big block you'd regret it
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ANDREW 1972 Chevy SWB Cheyenne Super JANE http://67-72chevytrucks.com/vboard/s...d.php?t=462072 1972 GMC Jimmy PENNY http://67-72chevytrucks.com/vboard/s...d.php?t=735827 1968 GMC patina swb PEARL http://67-72chevytrucks.com/vboard/s...d.php?t=731315 1972 Chevy K20 BRUCE http://67-72chevytrucks.com/vboard/s...d.php?t=805788 |
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#6 | |
Senior Member
![]() Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,365
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Re: converting from BB 2 SB...questions
Quote:
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A husband can be right...or...A husband can be happy. ![]() 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. ![]() 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc ![]() ![]() JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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#7 |
Account Suspended
Join Date: Oct 2012
Location: phx, az
Posts: 868
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Re: converting from BB 2 SB...questions
re-ring your bbc, add new bearings, find some new heads and put it back in the truck.
if it needs bored and honed, new pistons are 100-300 bucks. you cna have it back on the road for the same price your going to find a sbc. |
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#8 | |
Senior Member
![]() Join Date: Aug 2008
Location: Cedar Park, Texas
Posts: 7,496
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Re: converting from BB 2 SB...questions
Quote:
You might could still find a decent low mileage 5.7 vortec out of the 96-99 trucks, but they are getting harder and harder to find. |
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#9 |
Senior Member
![]() Join Date: Aug 2008
Location: Cedar Park, Texas
Posts: 7,496
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Re: converting from BB 2 SB...questions
I know that there are exhaust manifold/ header clearance issues when swapping from SB to BB and trying to use the SB frmae stands, but I don't know if there are issues going the other way. I have a set of SB frame stands for $30 shipped
http://67-72chevytrucks.com/vboard/s...d.php?t=534812 |
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#10 |
Senior Member
![]() Join Date: Aug 2008
Location: Cedar Park, Texas
Posts: 7,496
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Re: converting from BB 2 SB...questions
Also, from personal experience, the BB engines are a lot thirstier for fuel. THose extra cubes don't come for free!
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#11 |
Registered User
Join Date: Oct 2012
Location: Memphis, Tn.
Posts: 219
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Re: converting from BB 2 SB...questions
cool I am interested in the those frame stands, I will pm ya.
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__________________
Victory will only be achieved through superior firepower and trusting in the Lord. SOLD 68 C-10. http://67-72chevytrucks.com/vboard/s...d.php?t=560975 SOLD 2000 Silverado...http://67-72chevytrucks.com/vboard/s...=1#post6492671 87 V-10 4X4 http://67-72chevytrucks.com/vboard/s...d.php?t=643898 |
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#12 |
Junior Member
![]() Join Date: Mar 2005
Location: Wilmington DE
Posts: 218
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Re: converting from BB 2 SB...questions
I would save your money,find out what the big block needs first, the money you are going to spend on a 350 and swap parts could add up to what it will cost to rebuild the big block. If it doesnt need a crank or have cracked heads its gotta be cheaper then buying another motor and possably someone elses problems. If you rebuild it you know what you have, a new bigblock...
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72 cheyenne super BB402 TH400 Air Tack Tilt Posi P/S P/B AM/FM 12.96 @ 101.82 mph 60ft 1.82 12.39 @111.33 With a 180 shot nos 69 Camaro RS http://s94.photobucket.com/albums/l117/fdelcoglin/ email fdelcoglin@hotmail.com |
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#13 | |
Account Suspended
Join Date: Oct 2012
Location: phx, az
Posts: 868
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Re: converting from BB 2 SB...questions
Quote:
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