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ProMaxx Performance 185cc Aluminum Cylinder Heads Small Block Chevy


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ProMaxx Performance 2168
185cc Aluminum Cylinder Heads
  • Small Block Chevy
  • 2.02''/1.60'' Valves
  • 185cc Intake Runner
  • 64cc Combustion Chamber
  • Angle Plug
  • Assembled
  • Sold as pairs
  • Free Shipping - Ships directly from the manufacturer on 03/15/21

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


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    2168 - ProMaxx Performance Small Block Chevy Aluminum Cylinder Heads is rated 4.0 out of 5 by 2.
    Rated 4 out of 5 by from Good heads for the price /#4 exhaust valve leaking Good looking heads for the money, they perform well, But I did have a problem with #4 exhaust valve leaking, could not get it to seal , had to remove it and lap it in. Also dowel pin holes were too tight not allowing head to seat well on deck surface.
    Date published: 2020-07-02
    Rated 4 out of 5 by from like them This product is just what I had expected, good looking product.
    Date published: 2014-11-04
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    Are these heads compatible with a 1987 or newer 5.7 liter, l98, roller motor? Also, would you happen to know that since this is a factory roller motor, is it compatible with a hydraulic flat tappet cam?

    Asked by: GregoryWayne
    These heads will work, but will need a valve spring change and you will need to use an early style intake manifold.
    Answered by: Rusty B
    Date published: 2018-11-28

    can you reach over 430 hp with these heads, do you know what roller cam will fit these heads, also do you get both cylinder heads for 843.99?

    Asked by: fello
    This is a pair of heads and yes you can make more than 430 HP with these. This is the limitation of your cam choices - Max. Valve Spring Lift - .575" Hydraulic Flat Tappet
    Answered by: Rusty B
    Date published: 2018-04-10

    could i use these on my 94 chevy with center bolt vavle covers thanks

    Asked by: farm
    These are perimeter bolt only and will not work with centerbolt covers.
    Answered by: Jon Jegs Tech
    Date published: 2018-02-08

    Are these heads able to be used with a solid flat tappet cam shaft /

    Asked by: Pappy 66
    The springs will have to be changed for the solid lift cam.
    Answered by: Jon Jegs Tech
    Date published: 2020-06-17

    Can this head run self aligning roller rockers (Comp Cams 1617-16)

    Asked by: Harvick4
    Yes, but you would want to remove the guide plates if you are using self-aligning rocker arms.
    Answered by: Rusty B
    Date published: 2017-12-04

    Can you run a hydraulic roller cam with these

    Asked by: Jaybird1
    The valve springs would have to be changed for a hydraulic roller.
    Answered by: Jon Jegs Tech
    Date published: 2017-12-01

    Will these fit older gen 1 chevy motor ?

    Asked by: freddyNH
    Yes, these head will work on a gen 1 sbc.
    Answered by: BrandonJ
    Date published: 2017-11-17

    how many rps is this good for.... iwant a 350 or a 383 with a redline of 7k

    Asked by: mikeyb
    With the valve springs included on this heads for up to .575 lift hyd cam, 6500 to 7000 max suggested RPM
    Answered by: Jegs Tech
    Date published: 2017-11-07
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