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ATK Engines High Performance Crate Engine Small Block Chevy 350ci / 330HP / 380TQ


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High Performance Crate Engine Small Block Chevy 350ci / 330HP / 380TQ
Core Charge: $510.00
Truck Freight: $263.99
High Performance Crate Engine
  • Small Block Chevy 350ci
  • 330HP / 380TQ
  • Mid Dress Engine
  • Estimated to ship direct from manufacturer on 11/28/23 , pending manufacturer availability. Learn More

    Thank you! We will notify you when this product becomes available.

    HP291PM is rated 3.9 out of 5 by 7.
    Rated 5 out of 5 by from great engine I purchase this engine last year very happy with it.
    Date published: 2020-06-17
    Rated 5 out of 5 by from Strong engine Cam sounds good I got this engine back in March came with spark plugs, Wires, flex plate, etc. Engine runs good and smooth cam sounds really good (fast tapping cam) but not too much thump. Came with dyno sheets and spec sheet and instructions. Has good low end power and pulls hard when you get on it.
    Date published: 2019-07-18
    Rated 3 out of 5 by from Never shipped I bought this engine on 02/04/21 cause of it availability but as of 02/24/21 it hasn’t shipped with no eta
    Date published: 2021-02-25
    Rated 2 out of 5 by from Be aware on how this works. Motor was strong but several leaks like previous reviews. Mine was a covid motor so probably rushed but just assuming. Had coolant leaks along intake but toarquing down bolts stopped that. Timing chain cover leak (super common) and oil pan leak. Be aware at 500 miles had these leaks and they will only pay 50.00 an hour for labor. Good luck finding a shop to do it at that price. Parts are cover 100 percent. If I would have known they wouldn't cover an issue on a rebuilt engine this new 100 percent I wouldn't have purchased. Well might have but heck give a guy a heads up. Just be ready for issues and pay outta pocket for somthing not your fault. I wish I took head more to reviews I seen. Installed on 1974 chevy nova hatchback. Fit perfect but had to lift motor just a tad not to sit on crossmember.
    Date published: 2023-08-01
    Rated 2 out of 5 by from Left me wishing I'd bought something else Engine was purchased for a 55 Belaire. Engine arrived in good time. They paint over oil so the paint has to be removed and repainted if appearance is important. Gobs of silicone everywhere, even oozing out of the intake bolts around the egr ports. Valves were run all the way down as if it was an early 289 Ford. Let's see if they pay the labor claim.
    Date published: 2020-06-09
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    Will this work in a 75 Corvette?

    Asked by: Vett75
    The ATK 059-HP291PM engine can work in a '75 Corvette.
    Answered by: jshook
    Date published: 2023-02-14

    Can you run a small shot of nitrous on this engine

    Asked by: Drp2312
    The ATK 059-HP291PM engine is not recommended for use with nitrous.
    Answered by: jshook
    Date published: 2023-01-10

    Can you run a small shot of nitrous on this engine?

    Asked by: Drp2312
    Hello, no you cannot. It is not setup for it and it would void the warranty.
    Answered by: ATK HP Engines
    Date published: 2022-12-28

    Can I take the TBI off the original 350 engine in my 1995 Chevy Tahoe and run it on this engine or is it carb only? Thanks in advance!

    Asked by: Danny Boy
    This is carburetor only or an aftermarket EFI system.
    Answered by: ATK HP Engines
    Date published: 2022-12-15

    Can it run on 87 octane if needed? Non-alcohol 87 is available here too.

    Asked by: DR Sess
    Hello, no it cannot. It must be 91+ octane to avoid detonation.
    Answered by: ATK HP Engines
    Date published: 2022-12-06

    Let me clarify earlier question so I had a set of long headers on previous SBC looking for a good stainless steel mid set for this motor on my 1986 k10 Silverado. Thanks in advance

    Asked by: Jeremy
    ATk 059-HP291PM in a 86 k10, unfortunately i do not see a set of headers to match those choices
    Answered by: langus
    Date published: 2022-08-26

    What type of headers do you recommend for a '86 C10 four-wheel drive application with this motor?

    Asked by: Jeremy
    ATK 059-HP291PM in a 1986 k10 4x4 could use a set of headers like Flowtech 387-49152.
    Answered by: langus
    Date published: 2022-08-20

    Given I am looking to have a carbureted motor in my 95 S-10 opting out of the computer injector system currently have a V-6 vortec engine, will this motor marry up transmission wise with this V-8? the current tranny already has shift kits and overdrive 

    Asked by: Mike Giano
    The transmission should connect to this engine without knowing what model it is, this will work with most transmissions.
    Answered by: Rusty B
    Date published: 2020-06-30
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