SBC 400

[Shannen Durphey]

No verification on the bearings, but I've got a story about a 700R4
repeated front pump failure caused by excessive crank end play.  Poor
guy would make it about 150 mi between O'hauls, seems the 700s aren't
too tolerant of the converter disengaging from the pump tangs.  There
are aftermarket cranks available for the 400, that aren't too
expensive.  Look on the internet for Scat cranks for an idea about
price.
Shannen

dzorde at erggroup.com wrote:
> 
> Yes 0.020" end play (moving crank forwards and backwards when mounted in
> bearings), according to the machine shop they reckon it was OK as there is an
> auto tranny going behind it, but I'm a bit sceptical about it.  Someone has a
> vague memory that there are bearings with oversize shoulders available which you
> get machined down to the correct shoulder size to remove the end play, any
> verification on this ?
> 
> Dan  dzorde at erggroup.com
> 
> <Date: Tue, 18 Apr 2000 21:55:06 -0400
> <From: Shannen Durphey <shannen at grolen.com>
> <Subject: Re: SBC 400
> <
> <20 thousandths, as in .020"??  Stock specs are around .005" max, so
> <you've got a hell of a knocker there!  I've had one sb Chebbie with
> <excessive crank end play, sounded like a rod bearing going out.  Loud
> <enough to scare small kids when under load.  Luckily, the rear bearing
> <(which is also the thrust surface) was the worn part, not the crank.
> <So new bearings solved the problem.  Don't know what to recommend if
> <it's not the bearing, except be prepared to r&r the crank...
> <Shannen
> <
> <
> <Date: Tue, 18 Apr 2000 22:22:00 -0400
> <From: "nacelp" <nacelp at bright.net>
> <Subject: Re: SBC 400
> <
> <End Float?,  end play?.  front to aft clearance as a functionof the thrust
> <bearing?
> <Grumpy
> 
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