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SMALL BLOCK CHEVY
BIG BLOCK CHEVY
FORD
MOPAR
BUICK
NHRA
305 SMALL BLOCK 23º FLAT TOP

305 flat tops are ideal for 305 Sprinters as well as street/strip applications. Features 1/16, 1/16, 3/16 CNC precision machined ring grooves.

Includes:
Pin #927-2500-15-51S (118g)
Double spiro locks #927-042-CS
Accumulator Groove
Contact Reduction Grooves

305 SERIES FLAT TOP
Std Bore: 3.736
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
52cc 58cc 64cc
Compression Ratio
Dome
Vol.
Gram
Wt.
Footnote Oversize Recom.
Ring Set
170771 310 3.766 3.480 5.700 9.000 1.560 10.8 10.0 9.3 -5.0 412 Flat Top 0.030 J100F8-3766-5
170772 315 3.796 3.480 5.700 9.000 1.560 10.9 10.1 9.4 -5.0 418 Flat Top 0.060 J160F8-3796

APBA - 305 APBA FLAT TOP & DISH SERIES
Std Bore: 3.736
Ring package designed for: 5/64, 5/64, 3/16 Rings
Part # CID Bore Stroke Rod
Lgth.
Block
Ht.
Comp.
Ht.
Head Cubic Centimeters
52cc 58cc 64cc
Compression Ratio
Dome
Vol.
Gram
Wt.
Footnote Oversize Recom.
Ring Set
174004* 310 3.766 3.480 5.700 9.000 1.560 10.8 10.0 9.3 -5.0 504 M, Flat Top 0.030 NA
174002* 310 3.766 3.480 5.700 9.000 1.560 9.8 9.2 8.5 -12.0 472 M, Dish 0.030 NA

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