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Fall is here!

Irwin A with a tip for engine swap

The last of the shows will soon be only digital pictures and fond memories. If you are getting your Bolt ready for some last cruises, or just thinking about putting her up for winter, be sure to check out what parts you need from American Classic Truck Parts. They still offer a 10% discount to Stovebolters.

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#1209592 - Mon Mar 20 2017 09:13 PM 235 valve train questions
ASU Offline
New Guy
Registered: Fri Apr 29 2016 08:51 PM
Posts: 9
Loc: Butler, PA
I will start out with the background, I have a 235 in my 1948 3600. Obviously not original, but I started doing some checking. The block casting # is 3738307. The number above the starter Is CON4 A228. The number beside the distributor is FI27A. All this points to a January 1958 235.

Now for the real questions, Any idea if this motor has hydraulic lifters? I suspect it does, but do not really want to pull the side cover to see. Secondly, when setting the rocker arm clearance for hydraulic lifters, does it need to be done hot? The valves are noisy, but I think part of the problem is the oil passage is partially plugged as it takes about 2 minutes at idle to get oil out of all the rocker arm weep holes. I want to get all my facts straight before I pull the rocker arm shaft out for cleaning.

Thanks for the help. Jon
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#1209597 - Mon Mar 20 2017 09:41 PM Re: 235 valve train questions [Re: ASU]
tclederman Offline
Registered: Tue Sep 18 2001 12:00 PM
Posts: 24473
Loc: Jarvisburg, NC
F121A engine serial number:

F = Flint, MI engine plant
12 = December
1 - 1st day of the month
A = automobile 235 engine with manual transmission

All car 235 engines from 1956 onwards had hydraulic lifters.

"Secondly, when setting the rocker arm clearance for hydraulic lifters, does it need to be done hot?"
Yes, "normalize the engine" and adjust the hydraulic lifters as per Shop Manual.
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