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  • Fox 5.0 Mustang Tech

finally fired the 331 up

  • Thread starter Thread starter Modular2v
  • Start date Start date Jul 11, 2005
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Modular2v

Founding Member
Jun 30, 2002
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oklahoma
Jul 11, 2005
#1
  • Jul 11, 2005
  • #1
well i did it...with all the speed density stuff on.....the thing sounds mean as hell BUT i have a headgasket that is dripping and i cant figure it out
 

egan_gt

New Member
Apr 14, 2005
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hibbing MN
Jul 11, 2005
#2
  • Jul 11, 2005
  • #2
you built a 331 with a speed density car? I am doing the same thing on my 86. I was told i would have to convert to mass air and that there was no way around it. is there anything special you have to do?
 

5spd GT

"the 5.0 owns all"
Founding Member
Aug 7, 2002
9,516
6
99
Arkansas
Jul 11, 2005
#3
  • Jul 11, 2005
  • #3
331

Nice job on the start-up. You could either have a headgasket leak (torn or improper torque?)...or maybe just a lower bolt is leaking that goes thru the coolant passages. That would be much nicer...
 

z9_87

New Member
Apr 16, 2004
332
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0
Urbana, IL
Jul 11, 2005
#4
  • Jul 11, 2005
  • #4
egan_gt said:
you built a 331 with a speed density car? I am doing the same thing on my 86. I was told i would have to convert to mass air and that there was no way around it. is there anything special you have to do?
Click to expand...
Yeah you would have to re-burn the computer.
 

Modular2v

Founding Member
Jun 30, 2002
3,222
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99
oklahoma
Jul 11, 2005
#5
  • Jul 11, 2005
  • #5
egan_gt said:
you built a 331 with a speed density car? I am doing the same thing on my 86. I was told i would have to convert to mass air and that there was no way around it. is there anything special you have to do?
Click to expand...
thats right i did! and it actually ran!!! i also have a 498lift cam in it! the car sounds great! it is actually running a little to rich right now. You dont have to go to maf...but it would be better if you did. i plan on throwing a carb on soon anyway
 

Modular2v

Founding Member
Jun 30, 2002
3,222
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oklahoma
Jul 11, 2005
#6
  • Jul 11, 2005
  • #6
5spd GT said:
331

Nice job on the start-up. You could either have a headgasket leak (torn or improper torque?)...or maybe just a lower bolt is leaking that goes thru the coolant passages. That would be much nicer...
Click to expand...
i think it is a lower bolt because it is only leaking from a corner and there is NO coolant in the oil at all
 

5spd GT

"the 5.0 owns all"
Founding Member
Aug 7, 2002
9,516
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99
Arkansas
Jul 11, 2005
#7
  • Jul 11, 2005
  • #7
Modular2v said:
i think it is a lower bolt because it is only leaking from a corner and there is NO coolant in the oil at all
Click to expand...

Yeah check around the bolt to see if you have any leaking coolant around it. The headgasket is below the headbolt so hopefully you can pinpoint where it is originating from...good luck with that. If it is the lower bolt just back it out slowly and reapply some thread sealer on it (more this time) and put it back in and see if it fixes the problem.
 

Modular2v

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Jun 30, 2002
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Jul 11, 2005
#8
  • Jul 11, 2005
  • #8
5spd GT said:
Yeah check around the bolt to see if you have any leaking coolant around it. The headgasket is below the headbolt so hopefully you can pinpoint where it is originating from...good luck with that. If it is the lower bolt just back it out slowly and reapply some thread sealer on it (more this time) and put it back in and see if it fixes the problem.
Click to expand...
i think im just going to pull the heads off......and order som afr 185s, intake and carb.. and the fix the tv cable problem on my aod.....im either ordering a full manual valve body, kevlar banded aod or go with a tremec 600
 

N8Miller

I need NOS....make it 2 of the big ones
Founding Member
Jul 26, 2000
2,661
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0
Kingston, PA, USA
Jul 11, 2005
#9
  • Jul 11, 2005
  • #9
egan_gt said:
you built a 331 with a speed density car? I am doing the same thing on my 86. I was told i would have to convert to mass air and that there was no way around it. is there anything special you have to do?
Click to expand...

i have a 331 in my 86... you will really, really like it.
whats your set up going to be?
 

Modular2v

Founding Member
Jun 30, 2002
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Jul 11, 2005
#10
  • Jul 11, 2005
  • #10
n8 any regrets going with efi?
 

N8Miller

I need NOS....make it 2 of the big ones
Founding Member
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0
Kingston, PA, USA
Jul 11, 2005
#11
  • Jul 11, 2005
  • #11
Modular2v said:
n8 any regrets going with efi?
Click to expand...

NONE!

after doing it, i wouldnt have it any other way. the throttle response is so amazing. yes, EFI is more expensive to do, but its all about personal preference, and since i dont like carbs, EFI is my choice.
my philosophy is is that EFI is more street mannered, but carb would be better for a pure track car... but thats just me.
 

Modular2v

Founding Member
Jun 30, 2002
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99
oklahoma
Jul 11, 2005
#12
  • Jul 11, 2005
  • #12
i havent had a chance to really get on it.....is there a huge seat of the pants after the stroker?
 

Grn92LX

Fidanza Man!
Founding Member
Jan 14, 2001
6,819
64
129
New York
Jul 11, 2005
#13
  • Jul 11, 2005
  • #13
Awesome man!! Its nice seeing it actually start after all that work and money huh

Did you use a generous amount of thread sealent on the lower bolts?

I haven't taken mine much past 5000rpm yet (cam will pull to around 6600) but it rev's up fast. I did a quick 2nd gear pull and looked @ my wideband and im running way too rich up top. The a/f went from mid 12's to into the 11's. I gotta tune that.

I had a few vacuum leaks I fixed. It drives much better now. The vacuum leaks caused me to have to ad a ton of fuel at idle. Now I don't need anywhere near as much. Keep us posted!!

Mike
 

Modular2v

Founding Member
Jun 30, 2002
3,222
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99
oklahoma
Jul 11, 2005
#14
  • Jul 11, 2005
  • #14
i dont think i was very generous on the thread sealant at all now that i think about it
 

z9_87

New Member
Apr 16, 2004
332
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0
Urbana, IL
Jul 12, 2005
#15
  • Jul 12, 2005
  • #15
Modular2v said:
thats right i did! and it actually ran!!! i also have a 498lift cam in it! the car sounds great! it is actually running a little to rich right now. You dont have to go to maf...but it would be better if you did. i plan on throwing a carb on soon anyway
Click to expand...
you did a 331 and cam with no chip burt? If not you could gain a lot of power and it should run even smoother if you did.
 

Modular2v

Founding Member
Jun 30, 2002
3,222
23
99
oklahoma
Jul 12, 2005
#16
  • Jul 12, 2005
  • #16
yes i did a 331 with cam and no chip lol
 

Modular2v

Founding Member
Jun 30, 2002
3,222
23
99
oklahoma
Jul 12, 2005
#17
  • Jul 12, 2005
  • #17
i dont think im going to go with a efi setup......its alot of money
 

z9_87

New Member
Apr 16, 2004
332
0
0
Urbana, IL
Jul 12, 2005
#18
  • Jul 12, 2005
  • #18
electronic fuel injected, well you have efi. Just not mass air. You should get a chip burnt though.
 

Modular2v

Founding Member
Jun 30, 2002
3,222
23
99
oklahoma
Jul 12, 2005
#19
  • Jul 12, 2005
  • #19
z9_87 said:
electronic fuel injected, well you have efi. Just not mass air. You should get a chip burnt though.
Click to expand...
i know i have efi and i know what it stands for LOL.....but if i wanted to go with a good efi setup hmmmm lets see..... MAF conversion= 250$, 24# injectors= 240, a good efi intake= 400$ grand total= 890$........now a carb= 350$ intake 180$ grand total= 530
 

5spd GT

"the 5.0 owns all"
Founding Member
Aug 7, 2002
9,516
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99
Arkansas
Jul 12, 2005
#20
  • Jul 12, 2005
  • #20
You could sell your "carb setup" and use that for EFI
 
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