With a few 3.5 stroke FEs being discussed I had an idea

[winr1]

I have 1 x 390 crank with balanced rods and .040 forged pistons left I am saving so dont want to use up



Have 3 x .040 over 390 blocks left, one block has some tiny pits in 2 cylinders


1 x 352 crank and rods left ... pair of C8 heads with hard ex. seats and new valves, never run


Comp 260 Cam, new springs that match, also have 3 sets of old stock Ford lifters left
...

Got the part number here from a forum members post for Edsel 361 pistons  . 040 over

https://www.summitracing.com/parts/slp-h994p40/overview

I have 4 or 5 sets of main and rod inserts in standard up to .040

Same with moly rings and 15 or so engine gasket sets
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So, it hit me I could build a 367 mill for almost nothing to install in my 65 F100 while I decide on a 398 or 418 with appropriate heads


Truck has a 3.75 rear ( thanks Paulie ) .... so perhaps I should step up to more cam ??


Thoughts, ideas ??



Ricky.

[winr1]

heh .. forgot about the pistons cost ...


Wonder what lift those pistons can handle ??



Ricky.

[plovett]

Hey Ricky!

First of all, I hope you like the 3.75 gears (not 3.70's!  ).  Secondly, my opinion is that I would not build an interim motor.  It will take time and resources away from the motor you really want.  Almost all engines take more money and time than we expect, so I think you will just be putting yourself further behind in accomplishing your ultimate goal, by building the 367.

paulie

[winr1]

Hey Paulie

When in hi gear, I keep thinkin I need to shift again ... lol

They ratio is just right

I think ya right... will decide what I want and build



Ricky.

[plovett]

I think most of the time, even when you have most of the parts for a build, there is a significant cost in machining, and nickel and dime parts, and unforeseen expenses.  I would put that time and money into your 398 or 418.  I may have a 428 crank available in a few months.  Just have to make sure my 391 crank is going to work okay.

As for gearing, yeah, it's hard to cover all driving conditions with only 3 or 4 gears.   I forgot if you have an auto or 4 speed?  Even in my 5 speed Saturn I sometimes find myself trying to shift into a non-existent 6th gear.  It is geared pretty low even with it's overdrive.  I think it turns about 3150 rpm at 70 mph.  With only 124 hp you need gear!  LOL!

You can adjust your gearing a fair amount with tire height.  That is especially true in a big car or truck as you usually have more wheel well space.  The difference in a 26 inch tall tire and a 30 inch tall tire is about 14%.  That big a jump would make a 3.75 gear act like you changed to 3.25's if going from the shorter to the taller tires. It would act about like a 4.33 gear if going from the tall to the short tires.

paulie

[My427stang]

I have never used it, but if that hyper piston is 1.882, it could support a nice quench if the block doesn't have to be cut too far, but my gut says the compression would be way too low with all but the small early chamber

[frnkeore]

The compression would be pretty good, for a street engine.

.038 quench, decked .010 with a Clevite .050 head gasket.

[My427stang]

Frank my mistake...my books say double dish, no relief  first recess .045" deep x 3.320" diameter; second recess .188" deep x 2.525" diameter.  That equates to closer to 16cc with the beveled second dish. 

I didn't see the answer from Summit until now, but I would verify before I used them.  Summit is wrong more than they are right and the stock photo looks really short for a 1.88 CH piston

[frnkeore]

Ross, I'm only going by Summits info, too. It does look like larger than 6.4cc. Maybe they typoed it and it should be 16.4. I also guessed about the top ring distance. My original Edsel pistons, have a CH of 1.872 and top ring is .400. The pictured Summit piston looks more like .250 but, I used .300 because mine are so low.

Mine have no valve relief and .008 DC, the Edsel, CR is 10.2 but, if you add the top ring volume, of 1.58, they come in at 9.99.

[68fecyclone]

  That is a ft 361 piston. Has a large dish and the top ring is way down from the top of the piston. Rob

[frnkeore]

Rob,
The FT 361, L249F, is a 3 ring piston, using 6.488 rods. The CH is 1.902 and it had a .188 dish. No CC given.

The FT 361, L201NF, is a 4 ring piston, all else the same.

[winr1]

3/32   .094

5/64   .078

3/16  .188

The 391 FT engine I had, the top ring was thicker than the second ring
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https://www.ebay.com/itm/Sealed-Power-H994P40-Hypereutectic-Piston-Set-1964-1978-BBF-Ford-FE-5-9L-361-/251615199973?_trksid=p2349526.m4383.l4275.c10#viTabs_0
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Look at the weight ..... just now looked..

" The Sealed Power H994P40 piston weighs approximately 907 grams with the wrist pin. This piston has approximately a +6.4cc dish."

Of course, they got the pic wrong.... so .. the rest of the info ??


Had a set of 391 FT pistons and they were heavy

EGGE: Edsel 361
https://egge.com/part/egg-1000-l2062-8/



Ricky.

[TomP]

I have some .040" over 361 pistons , they are very heavy. You only need to pick up the box to tell that. Not sure if they are aluma-coated cast iron or not.

[chris401]

I have some .040" over 361 pistons , they are very heavy. You only need to pick up the box to tell that. Not sure if they are aluma-coated cast iron or not.

A box of 8 OEM 352 pistons weighs 16lbs and change.