Who still sells 11:1 pistons for the 4.6L 3V. The best I can find is 10.36:1.

[Jerry Stoneking]

The only pistons I can find are for he 5.4L 3V, and the 4.6L 2 and 4 valve. Anybody know which .030 over piston can do 11:1?

 

[whitmanink]

modmax maybe?

 

[Bruce Tolliver]

Check out JE Pistons. I know they make one for standard bore.

 

[Jerry Stoneking]

I should have added that I looked at Wiseco, Manely, Diamond, TSP, KB, Mahle, Silvolite, JE, ModMax, Livernoise, and the winner so far is DSS with 10.363:1. I have found a couple of Manley pistons that look promising but are vague/mis-labeled, and end up being for the 2 and 4V engines after more investigation.

 

[Dino Dino Bambino]

Take your pick.
These four are for a stock stroke crank:

JE Pistons 314603 - Ford 4.6L 3V FSR Pistons +0.2cc Dome, 3.562" Bore, 3.543" Stroke, 5.933" Rod Length, 1.220" CD, .866" Pin

JE FSR Pistons for the Ford Modular 4.6L 3V. +0.2cc Dome, 3.562" Bore, Standard Stroke and Rod Length. Forged from 2618 Alloy.

www.modularheadshop.com

JE Pistons 314604 - Ford 4.6L 3V FSR Pistons +0.1cc Dome, 3.572" Bore, 3.543" Stroke, 5.933" Rod Length, 1.220" CD, .866" Pin

JE FSR Pistons for the Ford Modular 4.6L 3V. +0.1cc Dome, 3.572" Bore, Standard Stroke and Rod Length. Forged from 2618 Alloy.

www.modularheadshop.com

JE Pistons 314605 - Ford 4.6L 3V FSR Pistons -1.5cc Dish, 3.622" Bore, 3.543" Stroke, 5.933" Rod Length, 1.220" CD, .866" Pin

JE FSR Pistons for the Ford Modular 4.6L 3V. -1.5cc Dish, 3.622" Bore, Standard Stroke and Rod Length. Forged from 2618 Alloy.

www.modularheadshop.com

JE Pistons 314606 - Ford 4.6L 3V FSR Pistons -3.8cc Dish, 3.701" Bore, 3.543" Stroke, 5.933" Rod Length, 1.220" CD, .866" Pin

JE FSR Pistons for the Ford Modular 4.6L 3V. -3.8cc Dish, 3.701" Bore, Standard Stroke and Rod Length. Forged from 2618 Alloy.

www.modularheadshop.com

While these four are for a 3.75" stroker crank:

JE Pistons 314620 - Ford 4.6L 3V FSR Pistons -3.1cc Dish, 3.563" Bore, 3.750" Stroke, 5.850" Rod Length, 1.200" CD, .866" Pin

JE FSR Pistons for the Ford Modular 4.6L 3V. -3.1cc Dish, 3.563" Bore, 3.750" Stroke, 5.850" Rod Length, 1.200" CD. Forged from 2618 Alloy.

www.modularheadshop.com

JE Pistons 314621 - Ford 4.6L 3V FSR Pistons -3.5cc Dish, 3.572" Bore, 3.750" Stroke, 5.850" Rod Length, 1.200" CD, .866" Pin

JE FSR Pistons for the Ford Modular 4.6L 3V. -3.5cc Dish, 3.572" Bore, 3.750" Stroke, 5.850" Rod Length, 1.200" CD. Forged from 2618 Alloy.

www.modularheadshop.com

JE Pistons 314622 - Ford 4.6L 3V FSR Pistons -5.0cc Dish, 3.622" Bore, 3.750" Stroke, 5.850" Rod Length, 1.200" CD, .866" Pin

JE FSR Pistons for the Ford Modular 4.6L 3V. -5.0cc Dish, 3.622" Bore, 3.750" Stroke, 5.850" Rod Length, 1.200" CD. Forged from 2618 Alloy.

www.modularheadshop.com

JE Pistons 314623 - Ford 4.6L 3V FSR Pistons -7.4cc Dish, 3.701" Bore, 3.750" Stroke, 5.850" Rod Length, 1.200" CD, .866" Pin

JE FSR Pistons for the Ford Modular 4.6L 3V. -7.4cc Dish, 3.701" Bore, 3.750" Stroke, 5.850" Rod Length, 1.200" CD. Forged from 2618 Alloy.

www.modularheadshop.com

If you shop around you might find the same part numbers at a lower cost.

 

[86GT351]

That should help

 

[Jerry Stoneking]

Thanks Dino, I do appreciate it. I was so focused on the .030" over I assumed the .020" overs could not make it happen either; hopefully .020" cleans up the cylinder walls.

Also, I thought .030" overbore was the max for these engines, how do we get to 3.633 and 3.701 bores on some of these pistons?

 

[Dino Dino Bambino]

The maximum allowable overbore on our 4.6 blocks is indeed +30 thou (3.582") but I wouldn't go beyond +20 thou unless absolutely necessary.
The 3.622" bore is +70 thou and that would require the 4.6 block to be resleeved.
The 3.701" bore pistons are intended for the Big Bore Boss 5.0 Modular iron block but they've also been used in sleeved 4.6 aluminum blocks for the weight saving.

 

[Jerry Stoneking]

I talked to JE and the 314604 +.020 pistons above, can be made as +.030 for a measly $40 for the set. So either way, this forum has been major score for me not settling for the 10.34 CR DSS pistons. Thank you Dino.

 

[Badd GT]

I have a set of Mahle 11:1 .020 oversized forged 4032 pistons with rings and pins/retainers. It’s a matched set. Graphal (or something like that) skirt coating also $500 plus shipping they are yours

 

[Jerry Stoneking]

What is the piston part number. I am not really sure I can get away with .020"; long story.

 

[Badd GT]

M3v220571F01

 

[Jerry Stoneking]

Mahle has not made those for many years. Is the kit new or used?

 

[Badd GT]

Brand new never used. I bought from member BruceH back in like 2014

 

[Jerry Stoneking]

Ok, I'm interested. Do these pistons have valve reliefs, and they don't need something odd like phaser limiters, right.