Dearborn5.0

I just bought a set of autolight 25's for my 87 mustang. I found this thread, bec my napa recept said gap plugs to 0.054.

Here's what it says on the Autolite site:

1987 FORD MUSTANG
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AutoliteĀ® Products

Engine Type 4-2.3L F/inj. (A) engine type?
Available Brand Name Part Number PlugGap Notes
Autolite Platinum Pro APP2545 .044
Platinum AP2545 .044
Copper Core 2545 .044 OE Style
Pro-Fitā„¢ 86052
Professional Series 96052

Engine Type V8-5.0L F/inj. HO (E) engine type?
Available Brand Name Part Number PlugGap Notes
Autolite Platinum Pro APP25 .054
Platinum AP25 .054
Copper Core 25 .054 OE Style
Pro-Fitā„¢ 86259
Professional Series 96259


Motorcraft Website:

1987 FORD MUSTANG V8-302 5.0L


Group - Specifications

Select Part Number Part Description Qty Per Vehicle Buyers
Guide
SPARK PLUG GAP .054 87-93
SPARK PLUG GAP .054 87-93
SPARK PLUG GAP .054 87-91
ENGINE DECAL OR MANUFACTURER APPROVED SERVICE MANUALS
OVERRIDE ALL INFORMATION LISTED BELOW

IGNITION TIMING 10BTDC 86-91
#1 CYLINDER LOCATION RIGHT-FRONT 83-92
DISTRIBUTOR ROTATION CNTR-CLOCKWISE 68-91
FIRING ORDER 13726548 83-92


For Non-HO 5.0L Engines (Crown Vic and Merc Marquis)

Motorcraft and Autolite both say gap at 0.050 (non-HO)

Dearborn5.0

I think ppl are confusing the gap on the L4 with the gap on the V8 HO 5.0L.... they are right next to one another in chilton's

(BTW, i was going to say before...well my mitchel manual says 0.050....wtf?, but now I realize that that was the gap for the non
HO 302 motors....I bet, if I look, the HO gap is right next to it.....)

Twisted

My Chilton's manual says .044 I believe. But my underhood sticker says .052-.056. I didn't notice too much of a difference between the two specs though.