Online - Chat with us!
Chat
Products to Compare (max of 3)
X
Compare These Parts
Talk to the Experts. Call 800.979.0122, 7am-10pm, everyday.
Customer Service
Since 1952
in
in
  • Expert Tech Support
  • Huge Inventory
  • Fast Shipping
Talk to the Experts. Call 800.979.0122
Shop By
Support
Account
Street Race Truck More... The Toolbox
Add to Cart
$469.99
$319.99
Keith Black KB129.040 Hypereutectic Chevy 400 Pistons/6.0 Rod
Keith Black KB129.040 Hypereutectic Chevy 400 Pistons/6.0 Rod

Keith Black KB129.040 Hypereutectic Chevy 400 Pistons/6.0 Rod

400 Chevy Small Block V8, Hypereutectic Aluminum Piston Material, Dome Piston Style

0 Reviews | 0 Answered Questions
In Stock
Ships FREE
Select your vehicle to verify fitment.
Select Vehicle
Keith Black KB129.040 Hypereutectic Chevy 400 Pistons/6.0 Rod
Keith Black KB129.040 Hypereutectic Chevy 400 Pistons/6.0 Rod
Zoomed In Image
Part # UP94171
Save 31%
$319.99
$469.99
set
Quantity:
Add to Cart
Call to Order
Add to Buildlist
Compare

Details
Reviews
Q&A
Videos & Articles

Important Messages:

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.

Details

Piston Material:
Hypereutectic Aluminum
Piston Style:
Dome
Piston Diameter:
4.165"
Dome Height:
.150"
Connecting Rod Length:
6.000"
Piston Ring Style:
C
Stroke:
3.75"
Wrist Pin Diameter:
.9272"
Piston Weight:
500 grams
Wrist Pin Weight:
145 grams
Compression 58cc =:
14.1 : 1
Compression 64cc =:
13.0 : 1
Compression 76cc =:
11.2 : 1
Sold in Quantity:
Set
MFG. Part #:
KB129.040
GTIN Code:
800745045386

Info

These are Garage Sale priced because they were part of a balanced assembly.

Keith Black Hypereutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

  • 390 Hypereutectic alloy
  • Fully machined crowns and valve reliefs
  • Drilled oil drain backs
  • Full floating wrist pins
  • Triple wound spiral locks
  • Reflective alloy allows 2% power increase
  • Quench dome technology minimizes deterioration
  • Zero deck quench designs
  • Lightweight wrist pins

For Chevy 400 c.i. (4.125" bore x 3.75" stroke).

Ring Style Chart (GIF)

474-129 Instructions (PDF)

Item Details

C/R 58cc=14.1, 64cc=13.0, 76cc=11.2
Piston/Pin Weight: 645 g
Rod Length: 6.0", Ring Style: C

Specs

  • Comp Height 5.565" Rod -  1.561
  • Comp Height 5.7" Rod -  1.433
  • Comp Height 6.0" Rod -  1.13
  • Pin Diameter -  0.9272

NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS   

 

Some parts are not legal for use in California or other states with similar laws/regulations

Related Products

More Like This

Reviews

Q & A

Videos & Articles
  • In this Tech Tip, John discusses LT1 rotating assembly options for a customer looking to build a solid autoX, drag, and occasional strip powerplant for his Firebird.
  • One of the most important parts of your racing operation is the engine. This article gives a detailed overview on how to maintain your engine to get the most out of it for as long as possible. Also learn some tips to prolong the life of your engine.
  • Heath P. tells his story on how the passion for 'hot rodding' was instilled in him by his grandfather. From driving tractors on their family farm to becoming a Ford family, you are in for a good read.

You May Also Like

Suggestions
Error
Note
Ok