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| | | | Joined: Mar 2009 Posts: 20 New Guy | | New Guy Joined: Mar 2009 Posts: 20 | My neighbor has a stock SBC 400 that I could get from him but I don't know to much about them. Can anyone here give me some advice on if this engine would be good for my '84 3/4 ton that I want to use primarily for hauling my other projects around with? The truck currently has a Turbo 400 tranny. Thanks, Chris | | | | | Joined: Feb 2006 Posts: 150 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 150 | Looks like a bolt-in to me...... Is the SBC 400 in good running condition or does it need rebuild? If it needs rebuild, I would keep looking for a good running motor (a 350 would also be great)or buy a GM crate 350 for around $2K.
Good luck | | | | | Joined: Apr 2005 Posts: 2,097 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,097 | The 400 SB is a good reliable engine. I have heard about some issues with overheating. If you have a good cooling system you should have no problems.
Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
| | | | | Joined: Dec 2008 Posts: 899 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 899 | 400 SBC are externally balanced. Make sure you get the flex plate or flywheel that goes to that engine.
Brian
Brian
1955.2 3100 Truck
The older I get the more dangerous I am!!!!! | | | | | Joined: Apr 2010 Posts: 436 'Bolter | | 'Bolter Joined: Apr 2010 Posts: 436 | I ran a SB 400 in my old '63 for years with no problems. Like 55 Shaker said, make sure you get the Flexplate that goes with that specific SB 400 because they are externally balanced.
You should have no trouble bolting it up to your TH400. That's the tranny I had in the '63 as well.
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Good strong engines. The harmonic balancer is different also.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Dec 2003 Posts: 2,733 Shop Shark | | Shop Shark Joined: Dec 2003 Posts: 2,733 | I had a new 78 Chev with a 400SB and a TH400. Very powerful, ran great and had no cooling issues. Bored out 350's with the 400 crank have had some cooling problems due to the thinner cylinder walls I'm told. | | | | | Joined: Feb 2004 Posts: 29,747 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,747 | Don't over-rev it, about 5500 or below is plenty of RPM. Make sure you keep it cool, good radiator and water pump, hoses, etc. 400's do not like to be overheated!
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Mar 2009 Posts: 20 New Guy | | New Guy Joined: Mar 2009 Posts: 20 | Thanks for all the advice. From what I've heard sounds like the 400 will work well for my application. Looks like I'm gonna finally get a good engine for my truck. Now all I gotta do is drop it in and start hooking everything up. Thanks again. Chris | | |
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