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
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305 SERIES FLAT TOP
Std Bore: 3.736
Ring package designed for: 1/16, 1/16, 3/16 Rings
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| Part # |
CID |
Bore |
Stroke |
Rod
Lgth. |
Block
Ht. |
Comp.
Ht. |
| Head Cubic Centimeters |
| 52cc |
58cc |
64cc |
| Compression Ratio |
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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 |
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| 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 |
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APBA - 305 APBA FLAT TOP & DISH SERIES
Std Bore: 3.736
Ring package designed for: 5/64, 5/64, 3/16 Rings
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| 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 |
|
| 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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| 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 |
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Tech and Installation Tips
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Valve Relief Diagram
- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.