| 4.6L / 5.4L MODULAR
These pistons are designed for 4.6/5.4L engines and are compatible with forced induction and nitrous applications. Low compression pistons feature our spherical
dish for the ultimate in combustion efficiency. These pistons are race proven in turbo modular motors posting mid 6-second times in the 1/4 mile. 4.6L part numbers now include valve reliefs for either 3V or 4V heads as noted below. 5.4L part numbers have no valve reliefs. Accept 1.5, 1.5, 3.0mm rings.
Includes:
Pin #866-2500-15-51S (109g)
Double spiro locks (#866-042-CS)
Contact reduction grooves
Double pin oilers
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4.6L 4V Flat Top
Std Bore: 3.552
Ring package designed for: 1.5, 1.5, 3MM Rings |
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| Part # |
Cubic
Inches |
Bore |
Stroke |
Rod
Length |
Block
Height |
Compression
Distance |
 |
| Head Cubic Centimeters |
| 42cc |
46cc |
52cc |
| Compression Ratio |
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|
Dome
Volume |
Gram
Weight |
Footnote |
Oversize |
|
| 257540 |
281 |
3.552 |
3.543 |
5.933 |
8.925 |
1.220 |
12.1 |
|
11.5 |
|
10.3 |
-3 |
NEW |
M |
STD |
|
| 257541 |
284 |
3.572 |
3.543 |
5.933 |
8.925 |
1.220 |
12.2 |
11.6 |
10.4 |
-3 |
NEW |
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0.020 |
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4.6L 4V Dish
Std Bore: 3.552
Ring package designed for: 1.5, 1.5, 3MM Rings |
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| Part # |
Cubic
Inches |
Bore |
Stroke |
Rod
Length |
Block
Height |
Compression
Distance |
|
| Head Cubic Centimeters |
| 42cc |
45cc |
52cc |
| Compression Ratio |
|
|
Dome
Volume |
Gram
Weight |
Footnote |
Oversize |
|
| 257542 |
281 |
3.552 |
3.543 |
5.933 |
8.925 |
1.220 |
9.7 |
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9.2 |
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8.6 |
-17.0 |
NEW |
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STD |
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| 257543 |
284 |
3.572 |
3.543 |
5.933 |
8.925 |
1.220 |
9.8 |
9.3 |
8.6 |
-17.0 |
NEW |
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0.020 |
|
| 257544 |
281 |
3.552 |
3.543 |
5.933 |
8.925 |
1.220 |
10.7 |
10.2 |
9.3 |
-10.0 |
NEW |
M |
STD |
|
| 257545 |
284 |
3.572 |
3.543 |
5.933 |
8.925 |
1.220 |
10.8 |
10.2 |
9.4 |
-10.0 |
NEW |
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0.020 |
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4.6L 3 VALVE FLAT TOP
Std Bore: 3.552
Ring package designed for: 1.5, 1.5, 3MM Rings |
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| Part # |
Cubic
Inches |
Bore |
Stroke |
Rod
Length |
Block
Height |
Compression
Distance |
|
| Head Cubic Centimeters |
| 42cc |
45cc |
52cc |
| Compression Ratio |
|
|
Dome
Volume |
Gram
Weight |
Footnote |
Oversize |
|
| 232468 |
281 |
3.552 |
3.543 |
5.933 |
8.933 |
1.220 |
12.7 |
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11.8 |
|
10.7 |
-1.0 |
384 |
M |
STD |
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| 232469 |
284 |
3.572 |
3.543 |
5.933 |
8.933 |
1.220 |
12.8 |
11.9 |
10.8 |
-1.0 |
377 |
M |
0.020 |
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4.6L 3 VALVE DISH
Std Bore: 3.552
Ring package designed for: 1.5, 1.5, 3MM Rings |
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| Part # |
Cubic
Inches |
Bore |
Stroke |
Rod
Length |
Block
Height |
Compression
Distance |
|
| Head Cubic Centimeters |
| 42cc |
45cc |
52cc |
| Compression Ratio |
|
|
Dome
Volume |
Gram
Weight |
Footnote |
Oversize |
|
| 232466 |
281 |
3.552 |
3.543 |
5.933 |
8.933 |
1.220 |
9.7 |
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9.2 |
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8.6 |
-17.0 |
375 |
M |
STD |
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| 232467 |
284 |
3.572 |
3.543 |
5.933 |
8.933 |
1.220 |
9.8 |
9.3 |
8.6 |
-17.0 |
379 |
M |
0.020 |
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5.4L DISH (* Compression Ratio's for 5.4L Pistons are calculated with .120" deck clearance)
Std Bore: 3.552
Ring package designed for: 1.5, 1.5, 3MM Rings |
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| Part # |
Cubic
Inches |
Bore |
Stroke |
Rod
Length |
Block
Height |
Compression
Distance |
|
| Head Cubic Centimeters |
| 42cc |
45cc |
52cc |
| Compression Ratio |
|
|
Dome
Volume |
Gram
Weight |
Footnote |
Oversize |
|
| 227125 |
330 |
3.552 |
4.165 |
6.657 |
10.078 |
1.220 |
8.5 |
|
8.2 |
|
7.8 |
-21.0 |
409 |
* |
STD |
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| 227127 |
334 |
3.572 |
4.165 |
6.657 |
10.078 |
1.220 |
8.6 |
8.3 |
7.9 |
-21.0 |
385 |
* |
0.020 |
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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. |
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- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.
Tech and Installation Tips
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Valve Relief Diagram