What is the spark plug gap,for a 307 motor ? - 1983 Oldsmobile Delta 88

Question edited for a lot more clarity, too many words. :>D
Question moved to model category.

0.9mm is the recommendation on NGK plugs.

https://www.google.com/search?q=2003+Peugeot+307+spark+plug+gap

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Certain spark plugs you don't adjust the gap. Spark plug manufacturers may have different gap recommendations. If you want it in inches, try .051 or 1.3mm

dude, so simple, go to any parts store or call, if you go in person and need plug gap info, it will say on the box, have the store guys give you the gap info, NGK has many different types of plugs for the 3.6 and each may require different gaps. The NGK spec for that motor is a gap of 0.043 in. for the IRIDIUM spark plugs.

Spark plug gap should be on the emission control sticker under the hood

it should be marked under the hood in the engine compartment a white or black sticker with the imfo of the engine or in your car manual if not sure and cant find it call a parts store and they will tell you the plug type as well the gap

It is on the radiator support label

HEI System could be .060 gap

But I would be sure because some motors
used less .043 or whatever

Google the question

Hi there:
On 1.6L, NGK states that the GAP is 0.9" for an LFR5B.


Keep in mind that if you use Iridium plugs you don't need to calibrate.

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2000 Chevrolet Truck S10 P/U 4WD 4.3L SFI 6cylSPARK PLUG ASM
Part Number: 12
Product Notes:
[Rapidfire Spark Plug]; .060 GAP
Per Vehicle: 6; Years: 1996-2001

SPARK PLUG ASM
Part Number: 41-993
Product Notes:
[Platinum Spark Plug]; .060 GAP
Per Vehicle: 6; Years: 1996-2002

From acdelco-catalog


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My Chilton book says R43 plugs gapped at .035 for a 1970 307. Hope this helps.