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

Aftermarket Blocks

  • Thread starter Thread starter kck6894
  • Start date Start date Jun 2, 2006

kck6894

Advanced Member
Mar 18, 2004
0
0
66
Paradise
Jun 2, 2006
#1
  • Jun 2, 2006
  • #1
Well I found out today that I broke the block in my car. I was using a stock ford block in my 94. I was looking at replacing it with an aftermarket block but was not certain where to buy one or who makes the best one. Right now I am running a NA 347 that revs to about 7K. Does anyone have any info or opinions for me?
 
8

86bluecobra

Advanced Member
Dec 20, 2004
4,265
12
69
B.C. Canada
Jun 2, 2006
#2
  • Jun 2, 2006
  • #2
world products Man o war blocks or a svo block from ford
 

poneypower89

Now everyone in the world will know I wanna bang t
Dec 6, 2004
0
3
28
Indianapolis, Indiana
Jun 2, 2006
#3
  • Jun 2, 2006
  • #3
Or if ur crafty.. the ol mexican block from a JY
 

88Stang331

New Member
Mar 30, 2006
239
0
0
Jun 2, 2006
#4
  • Jun 2, 2006
  • #4
poneypower89 said:
Or if ur crafty.. the ol mexican block from a JY
Click to expand...

I think somebody is stroking there ego a little bit much.
 

poneypower89

Now everyone in the world will know I wanna bang t
Dec 6, 2004
0
3
28
Indianapolis, Indiana
Jun 2, 2006
#5
  • Jun 2, 2006
  • #5
88Stang331 said:
I think somebody is stroking there ego a little bit much.
Click to expand...

naa... just giving him possibly cheaper options.

If he is going stroker he will already be using a 28oz balance crank, flywheel, oil pain, and balancer... so the only Real extra cost to get the mexican block working is the retro-fit lifters IF he wants a roller cam. the extra cost of retro fitting lifters added on to a mexican block is still less than an aftermarket block. SO, provided he can find a mexican block block its the cheapest way to build a stout engine that wont crack.

 

pb_paulie_b

Founding Member
May 19, 2001
894
0
0
Chaptico, Maryland
Jun 2, 2006
#6
  • Jun 2, 2006
  • #6
Don't forget the Dart iron eagle.
 

85_SS_302_Coupe

it sucks (I know) to be on the receiving end
15 Year Member
Nov 11, 2003
6,945
1,598
223
Northern KY
Jun 2, 2006
#7
  • Jun 2, 2006
  • #7
I believe the Man O War block is probably the end-all-beat-all small block Ford block...you can stroke the 302 version to a 426....that's insane.
 

kck6894

Advanced Member
Mar 18, 2004
0
0
66
Paradise
Jun 2, 2006
#8
  • Jun 2, 2006
  • #8
poneypower89 said:
naa... just giving him possibly cheaper options.

If he is going stroker he will already be using a 28oz balance crank, flywheel, oil pain, and balancer... so the only Real extra cost to get the mexican block working is the retro-fit lifters IF he wants a roller cam. the extra cost of retro fitting lifters added on to a mexican block is still less than an aftermarket block. SO, provided he can find a mexican block block its the cheapest way to build a stout engine that wont crack.

Click to expand...


I have good access to J/Y parts (seeing how I own one ) But my current set up is a 347 that is a 50oz blanace. Will that still work in the mexican blocks? How much stronger are the mexican blocks? How do you tell the differance and what did they come in?
 

poneypower89

Now everyone in the world will know I wanna bang t
Dec 6, 2004
0
3
28
Indianapolis, Indiana
Jun 2, 2006
#9
  • Jun 2, 2006
  • #9
kck6894 said:
I have good access to J/Y parts (seeing how I own one ) But my current set up is a 347 that is a 50oz blanace. Will that still work in the mexican blocks? How much stronger are the mexican blocks? How do you tell the differance and what did they come in?
Click to expand...

Ok, 50 oz balance CAN still work with the mexican block HOWEVER it is highly NOT reccomended by every engine builder I've talked to due to main seal issues and the fact 28oz balance is just simply better for a performance engine due to less rotating mass.

Mexican blocks have been known to handle as much as 800-900 hp. In fact, I havent seen a picture of one cracked yet where I see the sock 5.0l blocks cracked almost weekly.

The mexican blocks came in ford vehicles at RANDOM there is no specific car to search. They were however produced throughout the 70's so keep ur eye out for 302 equipped 70's model cars/trucks/vans.

From the outside the block looks almost identical EXCEPT it has two little bosses on the front of the block that are there for no reason. They do not interfer with any of the engines components... they were just there from the casting that was used. Also, if you look in the lifter valley of the block it will say "Hecho In Mexico" on it.

The mexicans blocks were rumored to have a higher nickel iron content..However, I have never seen proof of this so right now Im not buying that theory.

They do however have much larger main caps and thicker webbing. The block iteself is just a little beefier all around.. albiet just a little bit.
 

poneypower89

Now everyone in the world will know I wanna bang t
Dec 6, 2004
0
3
28
Indianapolis, Indiana
Jun 2, 2006
#10
  • Jun 2, 2006
  • #10
Oh yea, I own a JY too Greene Salvage in Spencer Indiana... Pretty much the reason I enjoy JY setups... cuz I can
 

kck6894

Advanced Member
Mar 18, 2004
0
0
66
Paradise
Jun 2, 2006
#11
  • Jun 2, 2006
  • #11
poneypower89 said:
Ok, 50 oz balance CAN still work with the mexican block HOWEVER it is highly NOT reccomended by every engine builder I've talked to due to main seal issues and the fact 28oz balance is just simply better for a performance engine due to less rotating mass.

Mexican blocks have been known to handle as much as 800-900 hp. In fact, I havent seen a picture of one cracked yet where I see the sock 5.0l blocks cracked almost weekly.

The mexican blocks came in ford vehicles at RANDOM there is no specific car to search. They were however produced throughout the 70's so keep ur eye out for 302 equipped 70's model cars/trucks/vans.

From the outside the block looks almost identical EXCEPT it has two little bosses on the front of the block that are there for no reason. They do not interfer with any of the engines components... they were just there from the casting that was used. Also, if you look in the lifter valley of the block it will say "Hecho In Mexico" on it.

The mexicans blocks were rumored to have a higher nickel iron content..However, I have never seen proof of this so right now Im not buying that theory.

They do however have much larger main caps and thicker webbing. The block iteself is just a little beefier all around.. albiet just a little bit.
Click to expand...

Cool! Thanks for the info!
 

88Stang331

New Member
Mar 30, 2006
239
0
0
Jun 2, 2006
#12
  • Jun 2, 2006
  • #12
kck6894 said:
I have good access to J/Y parts (seeing how I own one ) But my current set up is a 347 that is a 50oz blanace. Will that still work in the mexican blocks? How much stronger are the mexican blocks? How do you tell the differance and what did they come in?
Click to expand...

You wouldn't happen to have access to stock 6pc head lights, and LX tail lights?
 

poneypower89

Now everyone in the world will know I wanna bang t
Dec 6, 2004
0
3
28
Indianapolis, Indiana
Jun 2, 2006
#13
  • Jun 2, 2006
  • #13
88Stang331 said:
You wouldn't happen to have access to stock 6pc head lights, and LX tail lights?
Click to expand...

lol, i bet if its in a JY you wouldnt want the headlights ... decent tails can be found though
 

kck6894

Advanced Member
Mar 18, 2004
0
0
66
Paradise
Jun 2, 2006
#14
  • Jun 2, 2006
  • #14
88Stang331 said:
You wouldn't happen to have access to stock 6pc head lights, and LX tail lights?
Click to expand...

No that stuff moves pretty quick!
 

88Stang331

New Member
Mar 30, 2006
239
0
0
Jun 2, 2006
#15
  • Jun 2, 2006
  • #15
Hrmm..your in washington...maybe i'll have to stop by down at the junk yard when i come home on leave next time, and see what i can use...if anything from the junk yard.
 

kck6894

Advanced Member
Mar 18, 2004
0
0
66
Paradise
Jun 2, 2006
#16
  • Jun 2, 2006
  • #16
88Stang331 said:
Hrmm..your in washington...maybe i'll have to stop by down at the junk yard when i come home on leave next time, and see what i can use...if anything from the junk yard.
Click to expand...


Heck yeah! Who can resist the big city of Walla Walla?!?!
 

88Stang331

New Member
Mar 30, 2006
239
0
0
Jun 4, 2006
#17
  • Jun 4, 2006
  • #17
85_SS_302_Coupe said:
I believe the Man O War block is probably the end-all-beat-all small block Ford block...you can stroke the 302 version to a 426....that's insane.
Click to expand...

This is the block i am going to use for my 331 turbo set up. From what i understand its pretty much bullet proof, with forged internals, should be perfect for boost...bwahahaha.
 

85_SS_302_Coupe

it sucks (I know) to be on the receiving end
15 Year Member
Nov 11, 2003
6,945
1,598
223
Northern KY
Jun 4, 2006
#18
  • Jun 4, 2006
  • #18
88Stang331 said:
This is the block i am going to use for my 331 turbo set up. From what i understand its pretty much bullet proof, with forged internals, should be perfect for boost...bwahahaha.
Click to expand...


Yeah i had to double take when i read how far you can stroke it to. 426 out of a 351 block is a stretch, but out of a 302 block is crazy! I should have mentioned it's a tall dech version of the 302, but still the 8.2 version strokes well past 350.
 
You must log in or register to reply here.

Similar threads

Engine Suggestions on an engine rebuild. Stock cam/GT40Ps or aftermarket on both for a fun weekend driver?
  • MadSquirrelTech
  • Apr 28, 2026
  • Fox 5.0 Mustang Tech
  • 2
Replies
23
Views
614
Fox 5.0 Mustang Tech May 7, 2026
MadSquirrelTech
C
Drivetrain TV cable replacement--aftermarket or search other models?
  • chazmanaz
  • Dec 21, 2025
  • Fox 5.0 Mustang Tech
Replies
3
Views
278
Fox 5.0 Mustang Tech Dec 22, 2025
AeroCoupe
S
Block questions
  • s_vargas54
  • Jan 25, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
21
Views
644
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Feb 8, 2026
Trogdor
Progress Thread Progress Thread- From6to8's 95 GT/Saleen Supercharged 331 install
  • from6to8
  • Mar 22, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
24
Views
729
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 6, 2026
from6to8
Electrical Need help identifying what these electrical items are (93 LX 5.0)
  • dan50
  • Apr 11, 2026
  • Fox 5.0 Mustang Tech
Replies
6
Views
160
Fox 5.0 Mustang Tech Apr 12, 2026
dan50
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?