A-302 Or R-302

88Procharger · 12-04-2002, 09:05 PM

Dose any body know the difference

302 LX Eric · 12-05-2002, 08:53 AM

When you say 'A-302' are you referring to the A4 block? If so, it's my understanding that Ford improved this block and renamed it the R302. I used to remember some of the differences b/t the two, but can't for the life of me seem to recall them now. However, I think a similar thread came up a while back (maybe ~year ago) so you may want to do a quick search and see what you came up with.

Hope this helps.
E

Forcedpower · 12-05-2002, 11:42 AM

An R302 has 4 bolt mains ( middle 3 anyway) and they are 1/2" bolts. A4 is only 7/16" I think. Not sure about the A4 but R302 also has 1/2" head studs. They no longer make the A4 you can only buy the R302 now.

ultraflo · 12-05-2002, 03:50 PM

Off the top of my head (correct me if I'm wrong please), I'm going to say that the A-302 is an Aluminum block... look around the net and do some searches and you'll be good to go.

12-04-2002, 09:05 PM	#1
88Procharger Registered Member Join Date: Jul 2002 Location: Frazeysburg,Oh Posts: 15	A-302 Or R-302 Dose any body know the difference

12-05-2002, 08:53 AM	#2
302 LX Eric or '331 LX Eric' Join Date: Jan 1999 Location: Columbus, Ohio Posts: 2,142	A4? When you say 'A-302' are you referring to the A4 block? If so, it's my understanding that Ford improved this block and renamed it the R302. I used to remember some of the differences b/t the two, but can't for the life of me seem to recall them now. However, I think a similar thread came up a while back (maybe ~year ago) so you may want to do a quick search and see what you came up with. Hope this helps. E __________________ 1991 5.0 LX Coupe - 40,750 miles 331 cu. in. / Tremec 3550 / BFG Drag Radials 12.22 @ 114.31 mph - w/1.89 60'

12-05-2002, 11:42 AM	#3
Forcedpower Registered Member Join Date: Aug 1999 Location: Charlottesville, Va, USA Posts: 328	An R302 has 4 bolt mains ( middle 3 anyway) and they are 1/2" bolts. A4 is only 7/16" I think. Not sure about the A4 but R302 also has 1/2" head studs. They no longer make the A4 you can only buy the R302 now. __________________ 93 LX R331/AFR 205/Vic 5.0/? psi

12-05-2002, 03:50 PM	#4
ultraflo NX dealer-man Join Date: Sep 1998 Location: Peoria, Illinois Posts: 977	Off the top of my head (correct me if I'm wrong please), I'm going to say that the A-302 is an Aluminum block... look around the net and do some searches and you'll be good to go. __________________ RLS Racing! 93 LX 9.20 @ 147mph 03 Mach 1 12.39 @ 116mph