331 or 347 Stroker?

T

tkolstad

New Member

May 2, 2006

16

0

0

Rochester, Ny

Aug 10, 2006

#1

• Aug 10, 2006

• #1

Thinkin about having a stroker motor built, Going to be running a vortech s trim supercharger on this, what is the better performing stroker motor 331 or 347, i was told to go with the 331 but do not know why! any help would be appreciated thanks

 

R

R2D2

Aug 10, 2006

#2

• Aug 10, 2006

• #2

347

 

D

dwhiskie

New Member

Sep 18, 2004

183

0

0

Aug 10, 2006

#3

• Aug 10, 2006

• #3

x2

 

T

tkolstad

New Member

May 2, 2006

16

0

0

Rochester, Ny

Aug 10, 2006

#4

• Aug 10, 2006

• #4

can i use my existing 90 302 block to make a 347! Or should i get a dss block or something similar.

 

R

R2D2

Aug 10, 2006

#5

• Aug 10, 2006

• #5

tkolstad said:

can i use my existing 90 302 block to make a 347! Or should i get a dss block or something similar.

Click to expand...

yes you can, the DSS blocks are also stock blocks, that will still split at the main webbing at the usual hp levels

 

bynummustang

Seen my other Jackstand?

Jul 24, 2005

1

2

69

NC State University

Aug 10, 2006

#6

• Aug 10, 2006

• #6

DSS blocks just have a different name from stock.

Depending on how much boost you want to run, I'd go with the 331. The shorter stroke and shorter rods will work better with high boost.

If you're going under 10 PSI, I'd go 347.

 

blkcobra50

New Member

Jul 24, 2006

209

0

0

Aug 10, 2006

#7

• Aug 10, 2006

• #7

Stock block, notch the skirts, 347 rotating assembly w/blower pistons, s trim sound great but at block splitting power.

bynummustang said:

Depending on how much boost you want to run, I'd go with the 331. The shorter stroke and shorter rods will work better with high boost.

Click to expand...

331 and 347 have same length rods at 5.4'' with their own respective pistons. CHP has a shorter rod at 5.315" with 331 piston for their 347.

 

Grn92LX

Fidanza Man!

Founding Member

Jan 14, 2001

6,819

64

129

New York

Aug 10, 2006

#8

• Aug 10, 2006

• #8

347 but use a good block.

 

T

tkolstad

New Member

May 2, 2006

16

0

0

Rochester, Ny

Aug 10, 2006

#9

• Aug 10, 2006

• #9

I plan on running 10lbs of boost, as far as I know, the current block I have now is in good shape!

 

5spd GT

"the 5.0 owns all"

Founding Member

Aug 7, 2002

9,516

6

99

Arkansas

Aug 10, 2006

#10

• Aug 10, 2006

• #10

The power level is what will kill the block.

A 331 has more piston material to it, which could be better for boosted applications.

In your case, I would pick one or the other. Stroker will give you less power for more money, or you can go blower for more power and less money. It's up to you, good luck!

I would do a h/c/i setup and deal with that for a bit and then slap a supercharger on it.

 

sunil6784

Member

Mar 31, 2005

620

0

18

Boston, MA

Aug 10, 2006

#11

• Aug 10, 2006

• #11

Oh boy, here we go again.

 

88Stang331

New Member

Mar 30, 2006

239

0

0

Aug 10, 2006

#12

• Aug 10, 2006

• #12

5spd GT said:

In your case, I would pick one or the other. Stroker will give you less power for more money, or you can go blower for more power and less money.

Click to expand...

How do you figure more displacement would net you less power?

 

5spd GT

"the 5.0 owns all"

Founding Member

Aug 7, 2002

9,516

6

99

Arkansas

Aug 10, 2006

#13

• Aug 10, 2006

• #13

88Stang331 said:

How do you figure more displacement would net you less power?

Click to expand...

Read carefully...

I said supercharger.

 

T

tkolstad

New Member

May 2, 2006

16

0

0

Rochester, Ny

Aug 10, 2006

#14

• Aug 10, 2006

• #14

Im gonna talk to my local machine shop guy see what his opinion is on the better motor to use with the boost. What type of horsepower do you think i could get out of a stroker setup with boost, I am shootin for high 400's maybe 500hp! thanks for all the feedback guys I am kinda new to the 5.0 thing.

 

5spd GT

"the 5.0 owns all"

Founding Member

Aug 7, 2002

9,516

6

99

Arkansas

Aug 10, 2006

#15

• Aug 10, 2006

• #15

You could push 600bhp fairly easily with a stroker and a good h/c/i setup with 10psi of boost. Look into an aftermarket block and built internals.

Good Luck!

 

M

mustang6788

New Member

Jan 5, 2006

27

0

0

Aug 10, 2006

#16

• Aug 10, 2006

• #16

500 rwhp should not be a problem with a 331 and 10lbs. At 14-15lbs there are many people making over 600rwhp with fairly simple combinations. Your goal of 400 to 500 hp should be no problem for rwhp or at the flywheel being as I am not sure which you are meaning.

 

bynummustang

Seen my other Jackstand?

Jul 24, 2005

1

2

69

NC State University

Aug 10, 2006

#17

• Aug 10, 2006

• #17

blkcobra50 said:

Stock block, notch the skirts, 347 rotating assembly w/blower pistons, s trim sound great but at block splitting power.



331 and 347 have same length rods at 5.4'' with their own respective pistons. CHP has a shorter rod at 5.315" with 331 piston for their 347.

Click to expand...

I'm not an engine builder I should've specified, but I was debating this same thing, and was talking through ideas with Rick, and he explained it really well, I just gave the dumb shortened version.

 

9

95conv5.0

New Member

Mar 30, 2005

184

0

0

Aug 10, 2006

#18

• Aug 10, 2006

• #18

search button, i bet the topic has been covered 46 times in the last 5 weeks!

 

68torinogt

Hey guys, guess what--I have a bi-pass!!!

Mar 21, 2006

0

0

53

Welcome my son, welcome to the machine

Aug 10, 2006

#19

• Aug 10, 2006

• #19

its all good ya just got to pick one

 

bynummustang

Seen my other Jackstand?

Jul 24, 2005

1

2

69

NC State University

Aug 10, 2006

#20

• Aug 10, 2006

• #20

My last words on it, if you're staying N/A go 347, more cubes, more potential, and you can say I have a 347.

I love my 347, but I wish it was a 342. (I don't like having thinner cylinder walls)