4.2L v-6

pennystockart · #1 07-29-2008, 05:02 PM

will a 4.2L v-6 out of a 2002 f-150 fit into my 1997 4.2L f-150 ? saw on efor sale and it did not list mine as compatable. thank you for your replys in advance.

dirtyd88 · #2 07-29-2008, 06:14 PM

i would think it would. it might require new electronics/computer, and it might mount alittle differently...

but i would think it should work.

lowflyingbird · #3 07-29-2008, 08:14 PM

The intake manifold and other gaskets online with Autozone. This might tell you if anything changed. Ford did do some different heads on the 3.8 and 4.2. If the heads did not change then everything else should be easy after that. You might need to re use your intake or EGR setup too.
Lowflyingbird

dirtyd88 · #4 07-29-2008, 08:47 PM

Quote:

Originally Posted by lowflyingbird

Ford did do some different heads on the 3.8 and 4.2.

Ford has never put a 3.8 in a F150...unless yo uare talking about taking heads from a V6 mustang and putting them on the 4.2....

AlfredB18 · #5 08-09-2008, 04:23 PM

Quote:

Originally Posted by dirtyd88

Ford has never put a 3.8 in a F150...unless yo uare talking about taking heads from a V6 mustang and putting them on the 4.2....

The only real difference between a 3.8L and 4.2L of the same vintage is the crank and some bore.

They are the same engine for the most part. Even the heads, I bet.

dirtyd88 · #6 08-09-2008, 05:41 PM

i think they are built using the same core block, but im not sure about everything else. i think VMP tuning talks about it some on their site. maybe it needs to be googled...

Raptor05121 · #7 08-09-2008, 06:06 PM

The 4.2L is a bored 3.8L with a different upper head. The difference between the 1997 and 2002 4.2L is that between those years Ford switched to a aluminum intake manifold. Mounting is 100% the same as the 97. I know this because my 1998 engine blew out in 2002, and was replaced with a 2002 engine with alum manifolds. (haha dirtyd, mine are alum and not plastic

)

dirtyd88 · #8 08-10-2008, 12:50 AM

yea...you suck! lol

glc · #9 08-10-2008, 06:40 PM

Quote:

Ford has never put a 3.8 in a F150

Technically incorrect - they DID in 1982 and 1983.

timmypstyle · #10 08-28-2008, 08:17 PM

Quote:

Originally Posted by Raptor05121

The 4.2L is a bored 3.8L with a different upper head. The difference between the 1997 and 2002 4.2L is that between those years Ford switched to a aluminum intake manifold. Mounting is 100% the same as the 97. I know this because my 1998 engine blew out in 2002, and was replaced with a 2002 engine with alum manifolds. (haha dirtyd, mine are alum and not plastic

)

the 3.8 and the 4.2 have a bore difference of .01. the 3.8 is 3.80 and the 4.2 is 3.81. the bigger difference is the stroke.

Fifty150 · #11 08-29-2008, 12:25 AM

Quote:

Originally Posted by glc

Technically incorrect - they DID in 1982 and 1983.

1982 & 1983?

Dude, I wasn't even born yet.

timmypstyle · #12 08-29-2008, 12:38 AM

Quote:

Originally Posted by Fifty150

1982 & 1983?

Dude, I wasn't even born yet.

dude, thats rude! aww hell either was I lol

glc · #13 08-29-2008, 12:50 PM

That shows how long the basic design has been around. If an engine family has a 25+ year run, that generally speaks well for the reliability.

timmypstyle · #14 08-29-2008, 08:34 PM

Quote:

Originally Posted by glc

That shows how long the basic design has been around. If an engine family has a 25+ year run, that generally speaks well for the reliability.

usually but also usually they are kinda crappy when they start out but they tweak them or whatever and the become amazing engines. ive heard the 2.3L I4 in the rangers and mustang II's and other cars was crap when it first started but they made them a lot better, i could be wrong, its just hear-say.