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Mod | | | Forums66 Topics128,041 Posts1,055,490 Members48,424 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | onea you guys with the books .... the block is a 68-76 4 bolt and the number on the front pad is KO7 16 TKB ... what was the application and any details?
Bill | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | My book lists it as a 400 with automatic, beigna 4 bolt, that pretty much limits it to a '71-'73.
Bill Burmeister
| | | | | Joined: Mar 2007 Posts: 4,215 Moderator | | Moderator Joined: Mar 2007 Posts: 4,215 | It's not in my book that goes up to 1969. | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | hmmm - it does have a TH400 on it ... any idea of torque?
I'm not sure about leaving this in daBus, thinkin of watching for a 427 or 454, if I can find either cheap, or a 502 - thanks
Bill | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | Spec books are a little shakey on HP and torque specs, but the one listing I found shows 240 HP net and 410 ft/lbs (1971 specs).
Bill Burmeister
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | geez 410 is respectable, not so much below than an average BB, maybe it'll do - until it blows up  Bill | | | | | Joined: Dec 2008 Posts: 899 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 899 | I came up with TKB= 1976 pick up, 350, 165 HP. 4 barrel. On the drivers side at the back of the block where the head meets there's an 7 digit cast number. Post that and I can check that too.
Brian
1955.2 3100 Truck
The older I get the more dangerous I am!!!!! | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | ahh, yes, that casting# is why I said 68-76 4 bolt - it's 3970010, which the short list I have says is 302, 327, and 350 so I'm back to a switch!  Bill | | | | | Joined: Dec 2008 Posts: 899 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 899 | 3970010 block was a 4" bore shared with those three engines. You have a 350.
Brian
1955.2 3100 Truck
The older I get the more dangerous I am!!!!! | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | thanks .... on with other things while I wait for an affordable BB to float by!
Bill | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | Intersting, seems that TKB code got recycled. The book I have only goes to '72, and I have a suspicion that the TKB code listed in there may actually be for a 400 BB (402) rather than a SB. That would explain the high torque spec.
Bill Burmeister
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