Forged Crank Shafts.

[317indy]

Does anyone make them for 3.8 SII's? Can you just give specs to a crankshaft maker and get one? I was wondering how much a bored&stroked 3.8 would run? Stage 3 heads from intense, forged pistons bored.035 with forged rods, crankshaft.

[Rick M.]

i don't think theres enough cylinder wall to bore it over .035...I think it's been said the max is .010 or .020...

[Takumi Fujiwara]

Which is also why u never hear of people with higher displacment v6s. ( almost never )

[Bliggida]

<blockquote>quote:</font><hr>Originally posted by Takumi Fujiwara:
Which is also why u never hear of people with higher displacment v6s. ( almost never )<hr></blockquote>

Uh 4.3L's (262ci) are the most common. They can accept a bore and stroke of up to 4.125 inches.

Rounding the engine out to a stroked 321ci or 5.3L (about the size of Ford's Triton V8)

Anyway, Scat will make you a , Eagle might too, but unless you are dedicated to the V6, its really not worth it. With an oversized you are also talking about having to go with custom length rods, and pistons to match. That price doesn't include machining to make it all work together.

[ August 29, 2003: Message edited by: Bliggida ]</p>

[Rick M.]

<blockquote>quote:</font><hr>Originally posted by Bliggida:


Uh 4.3L's (262ci) are the most common. They can accept a bore and stroke of up to 4.125 inches.

[ August 29, 2003: Message edited by: Bliggida ]<hr></blockquote>

I think he may have been talkin about people with 3.8s with higher displacement...

[mrbako]

the 4.3 is on the v8 block w/ only 6 bored...it's not a dedicated v6 block like ours

[1998silverbird]

I went to advance today and was looking for some gaskets and I asked the dude at the parts cpu to look up crank shaft for the 3.8.. Advance has well they say they have Forged replacement crank shafts for our cars for like 240.00 and 165.00 with core..Does anyone work for advance or know if the cranks they have are actually forged??

[ September 09, 2003: Message edited by: 1998silverbird ]</p>

[viper98885]

<blockquote>quote:</font><hr>Originally posted by 1998silverbird:
I went to advance today and was looking for some gaskets and I asked the dude at the parts cpu to look up crank shaft for the 3.8.. Advance has well they say they have Forged replacement crank shafts for our cars for like 240.00 and 165.00 with core..Does anyone work for advance or know if the cranks they have are actually forged??

[ September 09, 2003: Message edited by: 1998silverbird ]<hr></blockquote>

I seriously doubt that they are actually forged for that price. Either the guy was mininformed for the price is wrong. Not for that price though.

[1998silverbird]

<blockquote>quote:</font><hr>Originally posted by viper98885:


I seriously doubt that they are actually forged for that price. Either the guy was mininformed for the price is wrong. Not for that price though.<hr></blockquote>

It said it in the computer.. They have to get them made and shipped from the warehouse.. It takes a week he told me..

[camaro_speedemon]

The highest bore you can go with our motor is .030" and that's really pushing it, your in the water jacket after that.