SMALL BLOCK CHEVY
BIG BLOCK CHEVY
FORD
MOPAR
BUICK
NHRA
396, 427, 454 CLOSED CHAMBER

New high compression dome pistons designed specifically for closed chamber cylinder heads. Precision CNC machined ring grooves accept 1/16, 1/16, 3/16 rings.

Includes:
Pin #990-2930-15-51S (150g)
Double spiro locks (#990-042-CS)
Forced pin oiler, with annular oil reservoir

CLOSED CHAMBER DOME SERIES
Std Bore: 4.250 *
Ring package designed for: 1/16, 1/16, 3/16 Rings
 Tech and Installation Tips
 Valve Relief Diagram
Part # Cubic
Inches		 Bore Stroke Rod
Length		 Block
Height		 Compression
Distance
Head Cubic Centimeters
101cc 107cc 109cc
Compression Ratio
Dome
Volume		 Gram
Weight		 Footnote Oversize
258203 502 4.467 4.000 6.135 9.780 1.645 9.7 9.1 8.8 2.0 650   0.000
258204 460 4.280 4.000 6.135 9.780 1.648 13.5 12.5 12.1 33.0 645   0.030
258205 466 4.310 4.000 6.135 9.780 1.648 13.4 12.4 12.0 33.0 658   0.060
258206 402 4.125 3.760 6.135 9.780 1.765 13.5 12.5 12.1 44.0 CALL M *  
258207 409 4.155 3.760 6.135 9.780 1.765 13.5 12.5 12.1 44.0 649 *  
258208 433 4.280 3.760 6.135 9.780 1.765 13.5 12.5 12.1 39.0 687   0.030
258209 439 4.310 3.760 6.135 9.780 1.765 13.4 12.4 12.0 39.0 695   0.060

Did you know? - we also offer a complete line of pistons for this particular application in our SRP product line? Click here to check them out.
 

- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.

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