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Chevrolet Performance 350 SB Bare Engine Block

809-10066034

Chevrolet Performance

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350 SB Bare Engine Block
350 Bare Block
  • 9.025 Deck Height
  • 2-Piece Rear Main Seal
  • 4-bolt Main Gray Iron Caps
  • Max Stroke 3.750
    • Currently unavailable.
    This product is not available, please call customer service for options, at 1-800-345-4545.
    10066034 - Chevrolet Performance Bare Engine Blocks is rated 3.7 out of 5 by 3.
    Rated 5 out of 5 by from Great Buying Experience I do business with JEG'S on a regular basis, and have never had a single complaint with any of my purchases from JEG'S. I will continue to do business with JEG'S with confidence!
    Date published: 2016-05-19
    Rated 3 out of 5 by from Good block....except...... I bought this block to replace my old one that was seized. It's a good block....everything is machined in tolerance. The only thing complaint I have is that this block came with absolutely no locating pins at all. No locating pins for the cylinder heads. no locating pins for the timing cover, no locating pins for the oil pump that's on the main cap...REALLY??!! They could have at least left me the oil pump pins...but no. I have to order all these pins, cause trying to get the old ones out of the old block without mangling them up will be almost impossible.
    Date published: 2019-08-05
    Rated 3 out of 5 by from Eh This block from GM is kind of a joke. No paperwork is provided upon purchase aside from a shipping manifest. Leaving you to dig up all the various clearances and tolerances yourself with no real tangible information about what the machinists standards were being held to (aside from googling many forums and finding somewhat repeating information). After many phone calls GM proved to be unhelpful and generally had poor customer service. The only information given on this block comes from jegs, and that is not their fault, but it is very limiting. All that said, after measuring for hours I found that all the machined surfaces were withing tolerance, but only just barely. With the measurements being on the loose end more often than tight. Would I purchase again? Eh, I'm not sure. It might be worth it to save up a little longer and upgrade to an aftermarket that can and will give you the information you desire.
    Date published: 2019-06-25
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    Is the block drilled and tapped on driver side for Z bar ball for a manual 4 speed transmission

    Asked by: Harley72
    You will be able to connect the manual clutch linkage to this block.
    Answered by: Rusty B
    Date published: 2018-09-05

    Is the block finished honed and machined.  Will there need to be any additional machine work before assembling 

    Asked by: Dirttrackpapaw
    Note: This block is finished honed and has dipstick openings on both sides.
    Answered by: Rusty B
    Date published: 2018-06-06

    can i use this to replace my gm 5.0 gen 1 small block from my boat?

    Asked by: NikB
    This is a standard Gen I small block Chevy block.
    Answered by: Rusty B
    Date published: 2018-04-11

    Will this block accept a 3.75" stroke crank without clearancing bottom of bore?

    Asked by: BodyGuy71
    This block still requires minor clearancing.
    Answered by: Matt_B
    Date published: 2018-03-31

    Can this block be used with 327 crank and rods? And what bore does the block have?

    Asked by: MalibuWagonMan
    This can be used with a large journal 327 crankshaft and rods, and the bore is 4.00".
    Answered by: Ray E
    Date published: 2018-07-22

    The cylinder bores are finished , what grit hone was used ? Is the cylinder set up for cast or forged pistons ? WHAT IS THE BEST RING TO USE FOR THIS BLOCK ? WILL I NEED TO HAVE ANY WORK DONE OR IS THIS BLOCK READY FOR ASSEMBLY ?

    Asked by: Ted NEW YORK
    The specs you are looking for are not available, this is the information that is provided.Each cylinder block is machined to production-spec tolerances and is manufactured to the exact specifications of pre-1986 engines. The can be used with any piston and any style ring.
    Answered by: Rusty B
    Date published: 2018-01-11

    can u install a roller cam in this block as it is

    Asked by: bosshoss
    Yes you can but you must use a retro fit cam.
    Answered by: BrandonJ
    Date published: 2017-11-26

    are the blocks clearanced for the bigger rod bolts?

    Asked by: jim rad
    These blocks do not have added clearance for larger rods, this you will need to do or have done by a local machinist.
    Answered by: Jegs Tech
    Date published: 2017-11-01
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