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  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

98 gt vs 03 gt block?

  • Thread starter Thread starter AdamantiumKnot
  • Start date Start date Dec 22, 2003

AdamantiumKnot

Founding Member
Sep 29, 2001
894
0
17
nj
Dec 22, 2003
#1
  • Dec 22, 2003
  • #1
would it take much modifying to do that swap? i'm waiting to hear about my car being warrantied. i'm wondering if they'll put a new block in it.
 

Redfire03GT

New Member
Sep 10, 2003
395
0
0
Newark, CA.
Dec 22, 2003
#2
  • Dec 22, 2003
  • #2
The block should be the same.
 

StratGT

Founding Member
Oct 11, 2001
477
0
16
Mississauga, Canada
Dec 22, 2003
#3
  • Dec 22, 2003
  • #3
AdamantiumKnot said:
would it take much modifying to do that swap? i'm waiting to hear about my car being warrantied. i'm wondering if they'll put a new block in it.
Click to expand...

I believe that the block is the same. The difference is in the pistons. If they use new pistions with your original heads, you will get a compression drop. If you get the PI Heads, you will be at 9.0 -9.4 to 1 compression.
 

AdamantiumKnot

Founding Member
Sep 29, 2001
894
0
17
nj
Dec 22, 2003
#4
  • Dec 22, 2003
  • #4
what would the compression drop mean horsepower wise? would i lose hp?
 

poolee

New Member
Aug 24, 2003
97
0
0
melbourne, fl
Dec 22, 2003
#5
  • Dec 22, 2003
  • #5
AdamantiumKnot said:
what would the compression drop mean horsepower wise? would i lose hp?
Click to expand...

yes, but it's safer for a power adder
 
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