Project 4.2L M112 v6

[l_shizzle_l]

Well i'm gonna start a motor build to do on the weekends and as money allows, so it's going to take some time. I'm hoping to prove you can be powerful and reliable. My engile will be built from scrach, from the block up to the M112 supercharger on top. Hoping to get it done and dropped in my car within a year and 1/2.

It will consist of:
3.8L block, honed and balanced
4.2L crank
Fordged pitions and rods.
Ported heads(not sure on what heads yet)
Ported intakes
M112 supercharger kit(found on 03 cobra's)
water/meth

I am doing this build as money allows, so it will take a while. Once it's done, i'm hoping to be arround 400-450rwhp in a daily driver. I will post pics as often as i get things done. First things first, I need an engine stand...

Edit:
Made a parts list. Here it goes.

X 2002 3.8L v6 block
X .030" bore
X 4.2L crank (4.3L with the bore)
X Scat forged 351/408W H-beam rods
X ARP rob bolts
X Wiseco forged 8.7:1 pistions
X rings and pins
X Stage 3 ported heads (260cfm intake/170 cfm exhaust)
1.94/1.56 Stainless Steel valves
CompCams 26981 valve springs(but thinking about getting stronger beehive springs)
1.7 ratio adjustable roller rockers
Hardened pushrods
2118/224 cam
X SFI approved harmonic balancer and aluminum flywheel
Stage 2 clutch
X Ported lower intake
Eaton M112 blower
310lph fuel pump
42# injectors

This is going to be one sick v6 once it's done. Cobra and bolt-on GT's beware.

[95 GTS]

who is fabricating your intake? and heat exchanger?

I have some ideas for you if you dont already know.

[l_shizzle_l]

SSM(super six motorsports) has released an adapter plate for the upper intake of 99-04 v6's. There is a kit that mysteed on 3.8mustang.com is going to produce for a decent price, complete with everything you will need to bolt up to a stock motor.

On a side note, i got my engine stand and will be picking up an engine this weekend.

[95 GTS]

KB 2.2!

[y2kGT]

KB 2.2!

DO IT!!

[Jeff]

i'll run ya

[l_shizzle_l]

Picked up the motor today. Got a couple things off of it, tommrow or fri the heads come off.

[machgsxr]

Good luck with your build and hopefully it comes out bad asz.

I need to start a thread with mine.

[l_shizzle_l]

Here's some pics of me tearing it apart.
And bandit, we'll run once i get it in

Pics here: matthewvestal - Photobucket - Video and Image Hosting

Now i need to get a hold of a pulley puller and get that crank pully off, drop the oil pan and pull the pistions, and get the block bored.

[96greengt]

Nice !!

I'll run ya!

[Jeff]

making good progress man

[machgsxr]

I wonder If I could convince my neighbor to do this to his v6. I know he just had a built motor put in, but I don't know if the shop put forged pistons and rods on top of it.

[l_shizzle_l]

Nice !!

I'll run ya!

You and bandit both... lol.
I also read your thread(all 10+ pages...), you may have some questions from me later on down the road.
Thanks for the support everyone.

[96greengt]

HAHA, all my V-6er questions were answered after I sold one for a V-8 !! lol

[l_shizzle_l]

Pulled the pistons tonight, walls look perfect. More pics!
Now i need to get the crank pully off and all the timing components inside. Sorry if i'm posting a lot of pics, but i am hoping that this thread will help someone decide if they want to attempt an engine build or not.
matthewvestal - Photobucket - Video and Image Hosting

[l_shizzle_l]

Well i'm down to the bare block, now i'm just waiting on funds for the internals. Here's some more pointless pics.
matthewvestal - Photobucket - Video and Image Hosting

[d4rkpri35t]

those are some pretty hands.. are you doing your own work?

[thatdavidkid]

those are some pretty hands..

anywho... wtf is that shaft above the cam? i've seen them on a couple different types of V6es but have no idea what they do

[blk01gt]

thats the balance shaft it takes almost all of the vibration out of the engine also chevy 4.3v6's have them too

[l_shizzle_l]

You can have it balanced without the balance shaft, but i'm going to leave it in, not worth the 3hp.

On a side note, i made a list of everything that will be in my built engine once i have it done. cobra's and bolt on GT's beware.

2002 3.8L v6 block
.030" bore
4.2L crank (4.3L with the bore)
Scat forged 351/408W H-beam rods
ARP rob bolts
Wiseco forged 8.7:1 pistions
rings and pins
Stage 3 ported heads (260cfm intake/170 cfm exhaust)
1.94/1.56 Stainless Steel valves
CompCams 26981 valve springs(but thinking about getting stronger beehive springs)
1.7 ratio adjustable roller rockers
Hardened pushrods
2118/224 cam
SFI approved harmonic balancer and aluminum flywheel
Stage 2 clutch
Ported lower intake
Eaton M112 blower
310lph fuel pump
42# injectors

Total cost
-----------
More than i want to know.


And i am doing most of the work.

[timpryor]

why so low compression? planning on running boosted?

[machgsxr]

why so low compression? planning on running boosted?

He's going to run the 03/04 eaton on it.

[96greengt]

why so low compression? planning on running boosted?

He is putting the Eaton M112 blower on it Timmah... if you read it all!

[l_shizzle_l]

why so low compression? planning on running boosted?

[d4rkpri35t]

anywho... wtf is that shaft above the cam? i've seen them on a couple different types of V6es but have no idea what they do

Says the guy with the riceburner pontiac ^^

[jmblownws6]

Ill have my 04 cobra eaton for sale next month. Whipple will be on it by then.

[l_shizzle_l]

Ill have my 04 cobra eaton for sale next month. Whipple will be on it by then.

Lmk when you want to sell it, i'll think about it.

[l_shizzle_l]

I just found a killer deal on an 99+ Style 8.8 Ford Axle Setup including: Moser 31 Spline Hardened Axles, FMS 3.73 Gears, Eaton Truetrac Diff, FMS Rear Cover with Braces, Welded Axle Tubes, All new seals and bearings. 1000 miles of use. Since i needed these after i get done with the motor i went ahead and picked them up, plus you can't beat free labor. He wants a stock 7.5, so we're gonna swap them out on each other's car.

[l_shizzle_l]

My crank came in today! Now it gets to sit and wait for my pistions and rods...

[tire]

with your projected power i'd be kinda scared to crack the block. not many v6s put out tha tmuch and the few that do (i konw of a turbo'd one that puts out 600+ on race gas) i wouldn't trust with longevity. i'm sure you've done your homework i'm just going to put in my .02 because it'd be a shame to get this completed and crack your block with too much power and a less than perfect tune.

that built rear looks like it is exactly matched for your probable output IMO... nice going.

i don't know if 42#ers will be enough for your projected output, but the pump should be fine. i have a formula from ford when i get back to cali i can plug your info in and get what size fuel items you need if you want.

have you started mocking the motor up and seeing if that adapter plate/intake/blower all play well together?

and what are you going to do about tranny, i haven't seen anything mentioned? even a HD t5 will def. not last with that kind of power. the only "low cost" option i see is a tko 500 or similar and somehow getting a slightly used one on the cheap.

good luck with the work, it seems like a fun plan.

austin

[l_shizzle_l]

Seeing as how no one has ever cracked a 3.8 block because of the power makes me feel warm and tingly inside. I'm looking to push arround 11 psi witch should net me a little over 400hp, i think i can live with that. I think the 42's should be enough, but plug it in and let me know what to says

There have been other v6's on other v6 forums that have done this build and have no problems. I have pretty much gutted their brains with questions.

As for the tranny, that will be my last upgrade before i work on body and paint. I was leaning towards a C4, but i haven't really looked into it much.

I made a list of what i want to do to my car before i'm done with it and it looks like this:

-full exhaust
-Built 4.3L
-boost
-built rear end
-tranny
-body and paint

I'm happy to mark 2 things off that list.

[tire]

Seeing as how no one has ever cracked a 3.8 block because of the power makes me feel warm and tingly inside. I'm looking to push arround 11 psi witch should net me a little over 400hp, i think i can live with that. I think the 42's should be enough, but plug it in and let me know what to says

alright, i'll try to remember to. it'll be a couple weeks. i thought people have cracked a few 3.8's from power? i know the supercoupe blocks are stronger, as are some of the later 4.2 blocks (more webbing in the valley, if memory serves). good to know though, and good luck.

There have been other v6's on other v6 forums that have done this build and have no problems. I have pretty much gutted their brains with questions.

v6poewr is your friend.

As for the tranny, that will be my last upgrade before i work on body and paint. I was leaning towards a C4, but i haven't really looked into it much.

I made a list of what i want to do to my car before i'm done with it and it looks like this:

-full exhaust
-Built 4.3L
-boost
-built rear end
-tranny
-body and paint

I'm happy to mark 2 things off that list.

buenos suertes and keep us updated.

austin

[ESG-642T]

with your projected power i'd be kinda scared to crack the block. not many v6s put out tha tmuch and the few that do (i konw of a turbo'd one that puts out 600+ on race gas) i wouldn't trust with longevity. i'm sure you've done your homework i'm just going to put in my .02 because it'd be a shame to get this completed and crack your block with too much power and a less than perfect tune.

that built rear looks like it is exactly matched for your probable output IMO... nice going.

i don't know if 42#ers will be enough for your projected output, but the pump should be fine. i have a formula from ford when i get back to cali i can plug your info in and get what size fuel items you need if you want.

have you started mocking the motor up and seeing if that adapter plate/intake/blower all play well together?

and what are you going to do about tranny, i haven't seen anything mentioned? even a HD t5 will def. not last with that kind of power. the only "low cost" option i see is a tko 500 or similar and somehow getting a slightly used one on the cheap.

good luck with the work, it seems like a fun plan.

austin

Theirs a guy putting down 700+ on the 3.8L block, we haven't reached the limit yet.

[l_shizzle_l]

v6poewr is your friend.

Never heard of v6poewr, but i'm a member at v6power, 3.8mustang, and mustangforums

[cominus]

Here's some pics of me tearing it apart.
And bandit, we'll run once i get it in

Exhaust off

Who is that?! Look at those thighs.:wowspring

[l_shizzle_l]

haha, too bad for you she is taken. +1 for sexy assistants.

[06GT_Stallion]

haha, too bad for you she is taken. +1 for sexy assistants.

haha. tell em!
I seen her when I met you at Biff's that one night, not bad at all
kudos

[l_shizzle_l]

Ordered some more shiat. 4.3L Wiseco forged pistions, SCAT forged H-beam rods, and 4.2 crank.

[95 GTS]

who is porting your head? I did not read the intire thread. I will after I make this post.

I would honestly mess with the stock v6 t5 until it goes eventually.

[95 GTS]

May I suggest Harold @ port pros for your head porting. I have seen some serious numbers out of his stuff and the heads he has done for us. And you dont have the BS run-around waiting time that many of the SA porters will give you.

he did a set of of lt1 heads for us that outdid AFRs. I have seen strong numbers and port design on all of his 4.6 stuff as well.