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ProMaxx Performance 2171 - ProMaxx Performance Small Block Chevy Cylinder Heads

ProMaxx Performance 2171 - ProMaxx Performance Small Block Chevy Cylinder Heads
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ProMaxx Performance#723-2171

185cc Aluminum Cylinder Heads
  • Small Block Chevy
  • 2.02''/1.60'' Valves
  • 185cc Intake Runner
  • 72cc Combustion Chamber
  • Straight Plug
  • Assembled
  • Sold as pairs

    ProMaxx Performance 2171 - ProMaxx Performance Small Block Chevy Cylinder Heads

    The ProMaxx Performance Small Block Chevy Cylinder Heads are manufactured from cast aluminum and are offered with straight or angled spark plug ports, a variety of intake port runner, combustion chamber and valve sizes to work on all of your performance engine builds from mild to wild!

    Features
  • All New Parts and Castings
  • Accepts Center Bolt or Perimeter Bolt Valve Covers
  • Stainless Steel Valves
  • Screw-In Studs and Guideplates
  • Sold In Pairs
  • Assembled in the USA

  • ProMaxx Performance 723-2171

    Manufacturer's Part Number:
    2171
    Rated 2 out of 5 by from Bad quality I bought the heads a month ago and installed them. These are on my Chevelle that I do not drive much. There is only a 3 month warranty which I feel shows how this manufacturer feels about their product. After about a half hour of warming the engine up, I backed the car out of the garage and noticed coolant starting to come out of the right side exhaust. I quickly pulled the car back into the garage and shut it down. At this point the coolant was steadily coming out of the exhaust like a garden hose running about 1/2 flow. I immediately removed the spark plugs and found no. 4 coolant pouring out. I removed the head and found a bb sized hole in the combustion chamber casting. I was told they were sold as a set so I needed to return them both for warranty which I did not feel comfortable leaving the other one on any way. When I called tech support before disassembling the head, they mentioned possibly a bad casting which leads me to believe they have had some bad castings in the past. Needless to say I have more down time and am missing a few car shows. I am displeased that they might know of the issue and still send out a bad quality product which in turn cost me quite a bit of time in the shop and more money in parts. I should have just spent the extra money in the first place and bought a better brand. I would have thought jegs would not sell this type of quality.
    Date published: 2015-06-04
    • 2015-08-30T10:41CST
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    • loc_en_US, sid_10001_10001_1246233, PRD, sort_relevancy
    • clientName_jegs
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