Engine Rebuild

Rebuild by: Herb Glaesmann Engine Service – Spring, TX

Engine History:  Our family had two classic Chevy trucks, a 1957 short wheelbase (SWB) stepside and a 1970 SWB fleetside.  The 1970 truck was lost due to unforeseen circumstances, however the running gear was harvested prior to the truck leaving our possession.

The 1957 SWB stepside, meant to be an original restoration, suffered a catastrophic engine failure as the 235 I6 engine literally broke in half.  Highly dismayed and searching for a replacement engine, it hit me; why not put the 1970 running gear in the 1957 truck?  This way, what’s left of the two family trucks would be combined as one!

After much research regarding engine rebuilders, we decided to go with Herb Glaesmann Engine Service out of Spring, TX.  His shop came highly recommended as he has provided numerous engine set-ups and sales on eBay, etc.

This section will cover the rebuild of our family engine.  Hopefully, we will have pictures and details to chronicle the work.

ENGINE SPECIFICATIONS:
Engine Cast # – 3970010….350…69-80…4 bolt main
Engine VIN # – VO512TAX
Engine Head # – 1970 3932441….69-70…350……….76cc chambers
1.94/1.50 valves, 76cc chambers
Intake flow 152 CFM
Exhaust flow 93.2 CFM
Intake manifold # – 3965577 350 4 iron Qjet B F X    300,350hp

Herb’s comments:   The motor built started with a 350-4 bolt main block.  The casting number was #3970010, sporting the original casting number #441 heads.   Finding a virgin engine, this age (circa 1970), is INCREDIBLE!!   The motor was in good enough shape, allowing only .030″ cylinder bore increase and the crankshaft was ground only .010″/.010″ undersize.  The machining process, included resizing the connecting rod big ends to OEM spec’s and magnaflux inspection for cracks and defects.  The heads received a 3-angle valve job, new guides, and hardened valve seats.  This will allow the use of unleaded fuel.  The gasket surface was decked for head gasket retention.

After the machine work on the block, crank, rods, and heads were completed, the cylinders were fitted with FLATTOP hypereutectic pistons.  This will yield a 9.2 to 1 compression ratio, with the 76cc combustion chambers.  The camshaft selected has 204`/214`@.050 specifications with 0.446″ lift on 112` LSA, providing 19-20 inches idle vacuum and GREAT street performance!  Power range for this combo is 1400-5000 rpm’s, IDEAL for a daily driver or weekend cruiser.  Expect approximately 300hp and 360ft.lbs. torque, working best with a 3.23-3.55 rear axle ratio.

16 thoughts on “Engine Rebuild

  • December 26, 2011 at 2:54 am
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    If your articles are alawys this helpful, “I’ll be back.”

    Reply
  • March 6, 2012 at 3:18 pm
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    wish I had Googled Herb prior to sending him money he shipped me a pc. of shit full of junkyard parts that ran 30 mins.
    I’ll share the photos of the engine if you like.
    Mike Hayes Mayfield Ky.

    Reply
    • November 12, 2012 at 8:03 am
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      yeah, i paid big money for a piece of junk too from herb glaesman in spring texas! blew a head gasket 2 miles down the road, tore engine apart, used cheap junk gaskets. someone else was complaining about cheap head gaskets. he told them to use felpro, funny same thing i heard from him! why didn’t he do it in the first place! then my damper blew apart and destroyed my double timing cheap piece of crap china double timing chain! he used junk parts after i asked him not too! i had more problems than mentioned here! just email me! he’ll do just about anything to save himself a nickel and charge you big $$$$. he’s no master craftsman. i know other people i found after i talked with’ that dealt with this so called professional, nothings ever his fault according to him….stear clear! i also have pictures and documentation!

      Reply
      • March 29, 2016 at 7:48 pm
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        Has anyone been able to get there money back?

        Reply
    • March 29, 2016 at 7:45 pm
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      Me to , will you e-mail me
      Thanks

      Reply
  • May 25, 2012 at 4:34 pm
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    hi, I’m having trouble finding specs for my 79 350 chevy 4 bolt main out of a truck. Putting it in a 91 S10. Do you have the ring gap for the first, second and the oil rings, also the piston to block side clearance. Also would you have the main and rod brg. clearance. Sure need help, thank you.

    Reply
  • November 11, 2012 at 8:18 pm
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    i would not have herb glaesman build any motor for me, he say’s he’s a master craftsman! master craftsmen don’t do shotty work and use inferior parts. total ripoff this dolt!

    Reply
    • November 11, 2012 at 8:20 pm
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      yeah! i hear ya, nothing but prob;ems with an engine i purchased from him, total junk! crappy parts…have many pictures if interested!

      Reply
  • November 13, 2012 at 1:16 pm
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    that guy’s a piece of work! i’d never buy anything from him, i also had major engine trouble from a rebuilt piece of garbage he sold me! i too have pictures if you all intrerested.
    tim makee
    plano, tx

    Reply
  • November 15, 2012 at 8:09 am
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    yeah, that herb glaesman is a jerk, he sold me junk too! i have many pictures
    mike thomas
    plano, tx

    Reply
  • January 13, 2013 at 8:53 am
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    Gee Herb, you’re not too popular these days ! Looks like you have a slight image problem

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  • July 10, 2013 at 9:24 pm
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    Had Herb Glaesman build me a 455 pontiac. It took me 10 months to get my motor. It didn’t have the D-port heads we agreed on. I bought D-port headers, paid 300 bucks on top of that to get them coated.. only to find out right after he pulls out and I pull the tape off the exhaust ports to find round ports. I paid for a port/valve job done that was not done. I’m almost done with the car, so no report on whether the motor is crap, but it does build oil pressure good and doesnt run hot. Dont give this guy your money. Since he dropped the motor off he has never answered or returned a phone call.

    Reply
  • November 30, 2013 at 1:29 pm
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    how can i reach this herb guy? sounds like i can get a motor done cheap(ly).

    Reply
  • September 12, 2015 at 4:36 am
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    A look at engine rebuild costs, what’s included in a performance engine rebuild kit, and the basic procedure for rebuilding an engine.

    Reply
  • March 25, 2016 at 2:08 pm
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    Purchased a motor from herb on eBay. After being installed for a couple days I realized something was very wrong. Because it was supposed to be guaranteed I shipped it back to be fixed. He was paid thousands for the motor and now it has been approximately 6 months since we shipped it back to him to be fixed properly and we can’t even get him to answer a phone call from us. We are from Maine and have tried everything to get him to answer a call from us. I used my friends phone from another state and as you can imagine he answered the phone immediately. Apologized all over the place. Told us that the motor was bad when he checked it and told us to call him back two days later to talk about how to resolve this problem. No surprise…he won’t answer again. He is a thief and should be treated as exactly that.

    Reply

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