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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

blown 331/347 combo... what will HP be?

  • Thread starter Thread starter buff531
  • Start date Start date May 6, 2005
B

buff531

Founding Member
May 11, 2000
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36
Hanover Park, IL
May 6, 2005
#1
  • May 6, 2005
  • #1
hey guys im trying to figure out which way to go.. i just cant justity spending an extra 2,400 dollars on a DART block right now...

im lookin at a 331 or a 347 from FPS. I can get a FULLY built motor with everythig from the oil pan to the valve covers except the upper and lower intake for $5,500... theres no price increase or decrease between the two engines...

what im looking for is how much hp and trq do you think these engines would make with lets say a ported cobra intake, and a vortech a-trim pullied for 8-9 lbs of boost... what would your guess at the ET in the 1/4 mile be as well?

hwo much HP and trq do you think the same blocks would have but with an S-trim pullied for 10-12 lbs of boost? what would the ET be?
 

nosmatt

Founding Member
Oct 13, 2000
1,356
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37
Bass Lake, Ca
May 6, 2005
#2
  • May 6, 2005
  • #2
5500........wow. scary to think of destroying that...

i think with a 306, with GOOD flowing heads, and a good tune, and all parts........ 12 psi of s trim//////your looking at block splitting power, and easy low 10 capable, at 125-128mph (depending on chassis, driver, and planet alignment of course)......... so a 331, or 347, is just going to take less than 12lbs to do it.
i really dont see why, if you are running a s/c, thats a 331 or 347 is considered UNLESS you have a dart block. too much $$$ to spend for no reason. IMHO!!!!!!!!!

spend the money on GOOD heads, and GOOD parts to support 500rwhp, and it will be cheaper to do it with a blower and a 306.


good luck!
 
B

BaXTeR3221

Member
Jan 12, 2004
917
0
16
Orange County, NY
May 6, 2005
#3
  • May 6, 2005
  • #3
yea i agree. Be prepared to get a stronger block if your going with a stroked and blown combo.
 
B

buff531

Founding Member
May 11, 2000
1,931
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36
Hanover Park, IL
May 6, 2005
#4
  • May 6, 2005
  • #4
lol GRRRRRRRRRRRR not what i wanted to hear but thanks for posting....

i just dont have the cast to spend $2200-$2500 on a DART block and then to completely spend more on the driveline....
 

nosmatt

Founding Member
Oct 13, 2000
1,356
0
37
Bass Lake, Ca
May 6, 2005
#5
  • May 6, 2005
  • #5
so why bother at all with a stroker? to say you have more inches than me


j/k


good luck!
 
B

buff531

Founding Member
May 11, 2000
1,931
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36
Hanover Park, IL
May 6, 2005
#6
  • May 6, 2005
  • #6
because the price difference between a 306 and a 331/347 is minimal.. its like $600....
 

Woodrow

Founding Member
May 19, 2002
183
0
0
Atlanta/Auburn
May 6, 2005
#7
  • May 6, 2005
  • #7
Find a used motorsports or "R" block if you cant afford the dart.
 
B

buff531

Founding Member
May 11, 2000
1,931
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36
Hanover Park, IL
May 6, 2005
#8
  • May 6, 2005
  • #8
are used r-blocks or dart blocks ok to use?
 

Woodrow

Founding Member
May 19, 2002
183
0
0
Atlanta/Auburn
May 6, 2005
#9
  • May 6, 2005
  • #9
buff531 said:
are used r-blocks or dart blocks ok to use?
Click to expand...

Yes as long as they arent split or bored to the max.

I just saw you were out of Ill. if you are looking for parts and stuff hell he even sells stroker kits try the link at the bottom, he is out of the Chi-town area but he could prob locate you a good block if you are intrested. His name is Alex his email is monymkrssla@aol.com or phone (708) 447-4912.


http://www.moneymakerracing.com/
 
F

FullAuto

Founding Member
Aug 29, 2002
157
0
16
Midwest City, Ok
May 6, 2005
#10
  • May 6, 2005
  • #10
I have $4800 in my Dart shortblock. Since that's paying $1750 for my new block, I don't think $5500 for a longblock using a stock block is that good of a deal.

Anyway, my a/f was below 10:1 and I made >600rwhp through the AOD on 13psi and 93 octane with no methanol. You need an aftermarket block for a blown stroker or you'll have to be real conservative.
 

EddieHaskell

Banned
Jul 18, 2004
73
0
0
North Carolina
May 7, 2005
#11
  • May 7, 2005
  • #11
how much does a used r block usually cost?
 
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