Block identification

hubba076 · May 26th, 2007, 03:43 PM

Does anybody know how to find what block is in a 2003 Mustang Gt?? I have heard that there were two different blocks used---Windsor and Romeo...How can you find out for sure (vin or block itself) and what is the difference between the two blocks???

2000stangGT · May 26th, 2007, 04:01 PM

in an 03 it should be romeo, but check the number of bolts on the head, i think its 13 romeo 11 windsor

hubba076 · May 26th, 2007, 11:02 PM

Yeah...I thought I heard something like that before. Do you have to take off the valve covers to find out or is it the same number of bolts that connects the cover to the head??

Any info why Ford used two different blocks and which is better??? Any differece at all???

Invictus · May 27th, 2007, 02:45 AM

same number of bolts on the valve cover as well. just pop the hood and count em

11bolt = romeo
13bolt = windsor

only differences i know of is that the romeo's have bolt on cam gears which makes the cam swap a little more pleasant and save you about $80.00 for a bolt on cam gear kit (if you're doing the swap)

and the romeo heads use cam girdles instead of cam caps on the camshafts

other than the cam swap being a bit eaiser with the romeo motor, the performance numbers are identical

thats all i know, just from experience. hope it helps

May 26th, 2007, 03:43 PM	#1
hubba076 Regular Join Date: May 2007 Location: Minnesota Posts: 91	Block identification Does anybody know how to find what block is in a 2003 Mustang Gt?? I have heard that there were two different blocks used---Windsor and Romeo...How can you find out for sure (vin or block itself) and what is the difference between the two blocks??? __________________ http://i194.photobucket.com/albums/z...076/Pic031.jpg 2003 Mustang GT. Red HOT Bitch! Many mods to come...

May 26th, 2007, 04:01 PM	#2
2000stangGT Enthusiast 2000 Mustang Gt 13.71 @ 102.01 Join Date: Jun 2006 Location: CT Posts: 721	in an 03 it should be romeo, but check the number of bolts on the head, i think its 13 romeo 11 windsor __________________ JLT True Cold Air - Accufab tb & plenum - Bassani Catback - o/r pro chamber - 4.10s - Xcal 2 motor is in pieces...

May 26th, 2007, 11:02 PM	#3
hubba076 Regular Join Date: May 2007 Location: Minnesota Posts: 91	Yeah...I thought I heard something like that before. Do you have to take off the valve covers to find out or is it the same number of bolts that connects the cover to the head?? Any info why Ford used two different blocks and which is better??? Any differece at all??? __________________ http://i194.photobucket.com/albums/z...076/Pic031.jpg 2003 Mustang GT. Red HOT Bitch! Many mods to come...

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May 27th, 2007, 02:45 AM	#4
Invictus Hardcore Enthusiast 1999 Mustang Join Date: Jul 2006 Posts: 1,309	same number of bolts on the valve cover as well. just pop the hood and count em 11bolt = romeo 13bolt = windsor only differences i know of is that the romeo's have bolt on cam gears which makes the cam swap a little more pleasant and save you about $80.00 for a bolt on cam gear kit (if you're doing the swap) and the romeo heads use cam girdles instead of cam caps on the camshafts other than the cam swap being a bit eaiser with the romeo motor, the performance numbers are identical thats all i know, just from experience. hope it helps

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