Where to get a good 331 short or long block

rustang94

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Dec 2, 2003

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Milwaukee WI.

Oct 5, 2006

#1

• Oct 5, 2006

• #1

I'm looking to upgrade to a 331 then run some boost on it..I know of DSS but is there anywhere else?? Thanks. Plus what kind of specs should I get?

 

STANGateURlilSS

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USA & SANDBOX

Oct 5, 2006

#2

• Oct 5, 2006

• #2

coasthigh.com coast high performance

how much boost u want to run?

 

rustang94

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Dec 2, 2003

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Milwaukee WI.

Oct 5, 2006

#3

• Oct 5, 2006

• #3

10 to 12 psi what do you think? For sure forged pistons but what about rods?

 

94gsl5.0

New Member

Sep 7, 2004

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seatown

Oct 5, 2006

#4

• Oct 5, 2006

• #4

Support your local engine builder...

If you have problems with fitmint or specific questions about the motor... you know where to go... too the guy who built it.

We have installed several built motors into several cars (not necessarily Mustangs) They were all built locally and being able to ask questions and interface face to face with the builder is worth the extra dollar... especially if you encounter problems, IMHO.

 

BlackVert

15 Year Member

Oct 3, 2003

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Bethesda, MD

Oct 5, 2006

#5

• Oct 5, 2006

• #5

i'm going 331 so i have some insight into this topic ...

if you're running boost, you probably want a forged crank along with forged rods and pistons.

if i had a garage, i'd build mine myself. you can get a prepped block and a kit from summit. the assembly actually looks pretty straightforward, if you just take your time and double check everything as you go.

you can also get prepped 4.03 bored blocks on ebay for about $750 shipped.

but i don't have a garage, so i'll be getting my short block from m&r engines. it is an extremely budget minded short block; it has a nodular crank, not forged. $1550 shipped

paul riva and others recommend rnh performance

get ready for people to ask why 331 and not 347.

 

rustang94

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Dec 2, 2003

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Milwaukee WI.

Oct 5, 2006

#6

• Oct 5, 2006

• #6

Isn't a 331 a little more reliable than a 347? I dont know much about 347. I heard the piston pin sits to close to the oil control ring? but that was a long time ago that I heard that. If I was to do a 347 I would keep it N/A. How many miles could I get out of each? 331 with boost or a 347 N/A both with good tunes.

 

Grn92LX

Fidanza Man!

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Jan 14, 2001

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Oct 5, 2006

#7

• Oct 5, 2006

• #7

rustang94 said:

Isn't a 331 a little more reliable than a 347?

Click to expand...

No, not at all. Both will be equally reliable depending on the build and machine work. As for mileage, NO ONE can tell you. Could last a 1/2 mile, could last 300k, it depends

 

blksn955.o

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st.louis mo 314

Oct 5, 2006

#8

• Oct 5, 2006

• #8

IMHO if your going to run boost and a stroker...get a better block and get a better block before a forged crank. I am not saying dont get a forged crank BTW.

If/when I do another motor for a mustang (prob. not in this car...maybe a fox notch). I hope to do a turbo and 331-347 or that 35x overbore (.125??? overbore deal thingie). I would go at least dart sportsman and forged crank rods and pistons. I have heard good things about RNH so he would be on that list as well as a very good local builder who has built MANY MANY tough combos around here.

I just dont like the idea of a stroker in a stock block or good boost (500rwhp able) on a stock block, much less both.

 

H

Holik95

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Aug 14, 2005

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Granite City,IL

Oct 5, 2006

#9

• Oct 5, 2006

• #9

I got my 331 from CHP, no problems with it.They have good service too.

 

BlackVert

15 Year Member

Oct 3, 2003

5,589

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Bethesda, MD

Oct 5, 2006

#10

• Oct 5, 2006

• #10

Holik95 said:

I got my 331 from CHP, no problems with it.They have good service too.

Click to expand...

Like that XE274HR cam? I'm thinking I'm going to go with that one.


Can you post your combo to this thread?

http://forums.stangnet.com/showthread.php?t=663735

 

Pokageek

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Jun 10, 2005

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MA, USA

Oct 5, 2006

#11

• Oct 5, 2006

• #11

Call newengineparts.com and ask for KEN! Telll him the guy who bought the mustang 306 sent you. They make AWESOME engines and at an unbeatable price!!

 

5spd GT

"the 5.0 owns all"

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Arkansas

Oct 5, 2006

#12

• Oct 5, 2006

• #12

blksn955.o said:

I hope to do a turbo and 331-347 or that 35x overbore (.125??? overbore deal thingie).

Click to expand...

363.5"

 

N8Miller

I need NOS....make it 2 of the big ones

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Kingston, PA, USA

Oct 6, 2006

#13

• Oct 6, 2006

• #13

buy mine so that i can get an R block and spray 100-125 shot and run mid 10s

but if you want one, click on the link for Rick in my sig.

 

rustang94

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Dec 2, 2003

281

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16

Milwaukee WI.

Oct 6, 2006

#14

• Oct 6, 2006

• #14

Thanks guys I'll check out RNH...