Moparts

440 PISTONS

Posted By: AB&E

440 PISTONS - 03/17/11 07:50 PM

Can anyone tell me what compression specs are for a trw piston #2292 it has been discontinued
thanks
Posted By: AB&E

Re: 440 PISTONS - 03/17/11 08:25 PM

Quote:

Can anyone tell me what compression specs are for a trw piston #2292 it has been discontinued
thanks



I have tried all other resources & dead end
Posted By: Von

Re: 440 PISTONS - 03/17/11 09:40 PM

Are you sure of the 2292 number? 2292s appear to be Ford 390 pistons??
Posted By: dOoC

Re: 440 PISTONS - 03/17/11 09:49 PM

R U able to measure the compression distance/height ?
Posted By: AB&E

Re: 440 PISTONS - 03/17/11 10:12 PM

Quote:

Are you sure of the 2292 number? 2292s appear to be Ford 390 pistons??



motor is at machine shop & I am 99% sure that is the #. I came up with same thing ford. I guess I will have to wait untill the machine shop tells all. I am not one to wait
Posted By: Von

Re: 440 PISTONS - 03/17/11 10:13 PM

Any chance they are 2295s? 2295s are a dome piston. Not sure off hand how big of a dome, probably .100 or so.
Posted By: JohnRR

Re: 440 PISTONS - 03/17/11 10:13 PM

is it a flat top piston or does it have a dome ? 2295 is a 440 dome piston , should be 12.0
Posted By: AB&E

Re: 440 PISTONS - 03/17/11 11:00 PM

Hey John
I was hoping you would chim in
I do not know much about engine internalls.
But I am pretty sure these are flat tops they have a indent in the middle of piston & they look the same as the ones in my 383 on the floor. so if they are the correct #s & they are flat tops what would they be on compression
Posted By: AB&E

Re: 440 PISTONS - 03/18/11 12:42 AM

Quote:

is it a flat top piston or does it have a dome ? 2295 is a 440 dome piston , should be 12.0



John where did ya go
I rechecked pistons & they are trw #2292p & they are for sure flat tops
thanks
Posted By: JohnRR

Re: 440 PISTONS - 03/18/11 01:19 PM

Quote:

Quote:

is it a flat top piston or does it have a dome ? 2295 is a 440 dome piston , should be 12.0



John where did ya go
I rechecked pistons & they are trw #2292p & they are for sure flat tops
thanks



No idea then , but it should be easy to figure out , find out the bore size and how far in the hole , or out , the piston sticks , does it have valve reliefs ? I've never seen a dish piston in a 440 , even the low compression pig motors .
Posted By: GomangoCuda

Re: 440 PISTONS - 03/18/11 05:17 PM

Quote:

Hey John
I was hoping you would chim in
I do not know much about engine internalls.
But I am pretty sure these are flat tops they have a indent in the middle of piston & they look the same as the ones in my 383 on the floor. so if they are the correct #s & they are flat tops what would they be on compression



Since that is a 390 Ford piston not a 440 piston, bore size is more than 1/4" too small and the compression distance is more than 1/4" too low.
The compression would be ZERO.
Posted By: JohnRR

Re: 440 PISTONS - 03/18/11 06:20 PM

Quote:

Quote:

Hey John
I was hoping you would chim in
I do not know much about engine internalls.
But I am pretty sure these are flat tops they have a indent in the middle of piston & they look the same as the ones in my 383 on the floor. so if they are the correct #s & they are flat tops what would they be on compression



Since that is a 390 Ford piston not a 440 piston, bore size is more than 1/4" too small and the compression distance is more than 1/4" too low.
The compression would be ZERO.



....
Posted By: AB&E

Re: 440 PISTONS - 03/18/11 08:14 PM

I get the picture
But that is the # on piston.
So I will just wait untill machine shop gets to me & see what I got.

thanks
Posted By: JohnRR

Re: 440 PISTONS - 03/18/11 08:37 PM

No idea what the number is, I can't see them from here to know what it is your are talking about.

If that is truly the number that is coming back as a ford 390 piston, so you are either working on a ford 390 and you think it's a 440 or the pistons are mismarked ???? or what you think is a TRW number is NOT.
Posted By: AB&E

Re: 440 PISTONS - 03/18/11 08:51 PM

John John
I said I was not real keen on engine internalls. But I am not a complete idiot So no reason for going that direction again I was just looking for help.
thanks
Posted By: JohnRR

Re: 440 PISTONS - 03/18/11 08:55 PM

Quote:

John John
I said I was not real keen on engine internalls. But I am not a complete idiot So no reason for going that direction again I was just looking for help.
thanks



Well you have been told by a number of different people that the number is a FORD 390 piston, all i picture is you doing this ... la la la la la la ... I can't hear you ... without actually SEEING what you are talking about a person can only GUESS , and that doesn't seem good enough for you.

I never said you were an idiot , but if the number is for a 390 piston there can ONLY be two answers ....
Posted By: GTXX

Re: 440 PISTONS - 03/19/11 12:40 AM

I have a 1982 TRW Engine Parts Specification Manual (for stock parts) and there is no 2292 piston in the book at all. .
Posted By: AB&E

Re: 440 PISTONS - 03/19/11 12:43 AM

My machine shop has a 1977 book not there either
I will just have to wait & measure pistons to see compression ratio thanks for looking though
Posted By: GTXX

Re: 440 PISTONS - 03/19/11 03:12 AM

I have a 1980 TRW Performance book too, but can't lay my hands on it. I think it's in the trunk of a car in the basement...
Posted By: mike s

Re: 440 PISTONS - 03/19/11 06:33 AM

TRW pistons should have a number starting with L. Sealed Power/Speed Pro pistons should start with a P. Sealed power/Speed Pro forged pistons were TRW pistons with a number change.
Posted By: Orange_Duster

Re: 440 PISTONS - 03/19/11 07:27 AM

2292 is a sealed power piston for a 1970 440. Should be the same as TRW 2266.
Posted By: 1_WILD_RT

Re: 440 PISTONS - 03/19/11 08:07 AM

Quote:

2292 is a sealed power piston for a 1970 440. Should be the same as TRW 2266.




If it is I'd sell them to someone who wants to run a blower...

C/H 1.991 around 8.5 c/r
Posted By: 2boltmain

Re: 440 PISTONS - 03/19/11 02:55 PM

Quote:

2292 is a sealed power piston for a 1970 440. Should be the same as TRW 2266.

Excellent example of much needed information obtained! Moparts is better than a dang library sometimes.(Even with members that are in a pre annoyed and ready to pounce state)
Posted By: BSB67

Re: 440 PISTONS - 03/19/11 04:57 PM

The 1.991 piston is not that bad as long as you pay attention to the build details. CR in the low to mid 9s is easy. Quench, well, that's another story.
Posted By: AB&E

Re: 440 PISTONS - 03/20/11 03:36 AM

Thanks guys Thats what I was looking for. So it sounds like they are 8.5 to 9 comp. I believe the 906 heads for motor have been shaved but not sure how much yet? Maybe this well help my low compression prob. I was hoping to do 9.5 to 10.5 ball park? Any input? This is in a 70 440 hp stk crank bored 30 over using a # 3 grind mr 6pk cam & 6 pk carbs. I may change pistons .
thanks again
Posted By: ahy

Re: 440 PISTONS - 03/20/11 05:39 AM

A CR between 9 and 9.5 should be about right with iron heads. I wouldn't go higher than 9.5.
Posted By: dOoC

Re: 440 PISTONS - 03/20/11 06:29 AM

Quote:



Moparts is better than a dang library sometimes. Even with members that are in a pre annoyed and ready to pounce state





There are GRUMPY people like that ....HERE ? ...
Posted By: AB&E

Re: 440 PISTONS - 03/20/11 10:40 PM

Quote:

Quote:



Moparts is better than a dang library sometimes. Even with members that are in a pre annoyed and ready to pounce state





There are GRUMPY people like that ....HERE ? ...




Stock factory list compression for the 70 440hp was 10:5:1 I believe. But I am good with at least 9:5 with the price of fuel:
Posted By: GTXX

Re: 440 PISTONS - 03/21/11 01:19 AM

70' 440hp was listed as 10:1, 440-6 pack was listed as 10.5:1. If those pistons are the same as L2266 you won't have 9.5:1 compression unless you use closed chamber heads.
Posted By: demon440

Re: 440 PISTONS - 03/21/11 02:34 AM

Mike I have a set of these TRW 2266 flat tops.
They are .030 over very low miles.
I sold Wild Bill the crank and have no use
for them. I had them in a 440 with 906 heads and a .484 cam, it ran great.

Attached picture 6540826-IMG00148-20110320-2106(Medium).jpg
Posted By: demon440

Re: 440 PISTONS - 03/21/11 02:36 AM

Here is a pick of the set.

Attached picture 6540829-IMG00149-20110320-2108(Medium).jpg
Posted By: bigblock4x4

Re: 440 PISTONS - 07/29/11 01:09 AM

not to b a di**head but I just pulled a for sure,for real,440 dodge apart and the 2292p number is on the top of the pistons in that 440,i was tryin to also figure out what they were,make no mistake this is a 440 mopar that i'm workin on
Posted By: DPelletier

Re: 440 PISTONS - 07/29/11 04:33 PM

Quote:

not to b a di**head but I just pulled a for sure,for real,440 dodge apart and the 2292p number is on the top of the pistons in that 440,i was tryin to also figure out what they were,make no mistake this is a 440 mopar that i'm workin on



the mystery has already been solved; 2292 is a Sealed Power number NOT a TRW number. As Johnrr opined, the OP was mistaken about them being TRW pistons and some knowledgable Moparts members recogized the number as a SP 440 piston.......nothing else to see here!


Dave
Posted By: DPelletier

Re: 440 PISTONS - 07/29/11 04:37 PM

Quote:

Thanks guys Thats what I was looking for. So it sounds like they are 8.5 to 9 comp. I believe the 906 heads for motor have been shaved but not sure how much yet? Maybe this well help my low compression prob. I was hoping to do 9.5 to 10.5 ball park? Any input? This is in a 70 440 hp stk crank bored 30 over using a # 3 grind mr 6pk cam & 6 pk carbs. I may change pistons .
thanks again



It's up to you, but personally I would change pistons. My 440-6 is running the same cam but I am at close to 11:1.....it runs on 94 octane pump gas, but I expect that it'll need a race fuel mix to get the timing right for the track.....we'll see. I just couldn't live with low 9's or less for compression.


Dave
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