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Small Block Chevy, Flat Top Piston and Moly Ring Kit.MERCRUISER 5.7L V-8 FLAT TOP HYPEREUTECTIC PISTON+RING KIT
255hp 260hp 270hp 280hp 300hp MIE Mag Alpha
This
listing is for a set of eight (8) Sealed Power FLAT
top pistons and a MOLY piston ring set (Hastings/Perfect Circle/MAHLE) 350 Chevy and Mercruiser 350ci/5.7L applications using the Chevrolet V-8 engine.
P/N (8) H345DCP + 40564CP OR 2M139. Piston specifications are as follows:
- BORE: 4.000" (std)
- HEAD TYPE: flat hypereutectic - we carry dished pistons in other listings
- RING LANDS: 5/64"-5/64"-3/16"
- COMP. DISTANCE: 1.540"
- PIN DIAMETER: .9275"
P/N H345DCP-KIT
About Speed Pro Digital Diamond Profile Hypereutectic Pistons:
Dominating the horsepower-per-dollar race.
These
Speed-Pro Digital Diamond Profile (DDP) hypereutectic pistons feature a
new digital actuated diamond turning process that produces precision
skirt profiles. This new Digital Diamond Profile (DDP) technology
creates a unique barrel profile of the pistons, promoting an oil wedge
between the piston skirt and the cylinder wall. They feature a newly
designed ring groove geometry using Thermal Arching Compensation (TAC)
that machines the piston ring grooves with an uptilt to offset thermal
arching distortion. This squares the ring face up to the cylinder wall
for increased power and decreased oil consumption. The Speed-Pro
Digital Diamond Profile hypereutectic pistons feature the next
generation of Duroshield skirt coating, reducing friction across the
entire rpm range and increasing wear resistance for longer life and
superior noise and vibration reduction. They also use
precision-machined piston pin bores that allow for either fixed or
floating wrist pins; pin locks available separately. The pistons come
weight-matched to a 4 gram (+/-2 grams) maximum variation within every
engine set.
Federal Mogul/Speed Pro Piston Part
Number
|
Application |
Power Range |
Special requirements |
Compression information
|
Ring groove size
Pin diameter
|
Rod length
Stroke
|
Deck clearance
Skirt clearance
|
|
H345ACP STD (H345DCP) plus moly ring set (Hastings/Perfect Circle/MAHLE) P/N H345ACP-KIT
We also have other sizes available.
|
Chevrolet 350ci V-8 - 4.000" bore (at STANDARD)
1982-90 Car (USA)
Can be used with other Chevrolet 350ci engines as a performance upgrade.
Flat head w/4-valve reliefs. Perf. or reg. duty operation. Not OE duplicate Wt.; Use as sets only.
|
idle to 6000+rpm |
Good for street/strip or light race |
1.548 compression distance
-5cc head volume
Compression ratio (+.030" bore):
w/58cc heads 9.97:1
w/64cc heads 9.35:1
w/72cc heads 8.65:1
w/76cc heads 8.34:1
|
5/64" 5/64" 3/16" ring grooves
.928" pin diam.
Press-fit
These pistons can be free floated but LR63 locks must be purchased separately.
|
Stock 5.700" length rods
Stock 3.480" stroke
|
.025" deck clr
.0010" skirt clr
|
