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BIG BLOCK 427 APBA DOME

Designed specifically for use with APBA-approved Dart Pro-1 cylinder heads, these pistons laser engraved with the APBA logo and part number.

Includes:
Pin # 990-2930-15-51S (150g)
Double Spiro Locks (# 990-042-CS)
Double Pin Oilers
Accumulator Grooves
BBC 427 APBA
Std Bore: 4.250
Ring package designed for: 1/16, 1/16, 3/16 Rings

Tech and Installation Tips
Valve Relief Diagram
Part # CID Bore Stroke Rod
Lgth.
Block
Ht.
Comp.
Ht.
Head Cubic Centimeters
112cc 118cc 124cc
Compression Ratio
Dome
Vol.
Gram
Wt.
Footnote Oversize Recom.
Ring Set
262808 427 4.250 3.766 6.135 21.218 13.200 12.2 11.4 50.0 NEW STD J100F8-4250-5
262809 433 4.280 3.766 6.135 21.318 13.300 12.4 11.6 50.0 NEW 0.030 J100F8-4280-5
265366 440 4.310 3.766 6.135 21.518 13.500 12.5 11.7 50.0 NEW 0.060 J100F8-4310-5

- 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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