4 lug or 5 lug

adamsgt · Nov 8, 2010

how strong is the 4 lug axle? im trying to figure out if its worth it to do the 5 lug conversion. the car does see some track time but it is pretty much stock. i do plan on modifying it though. just wondering how much the 4 lug can handle

CarMichael Angelo · Nov 8, 2010

the lugs wont fail before the axle will. Stock or mostly stock and certainly on a street tire the lug configuration will not matter a bit.

Now throw some drag slicks, a shot of nitrous, and a 5000 rpm side step on the clutch, and that changes things.

I'll still bet the axle will go before the lugs shear off.

Mustang5L5 · Nov 8, 2010

Unless you run spacers....or poorly fitting wheels with worn lug holes.

adamsgt · Nov 9, 2010

so i guess the 4 lug wont hold up to a 347

2000xp8 · Nov 9, 2010

The switch from 4 lug to 5 lug isn't really about the strength.
You could always buy 31 spline 4 lug axles with cold hardened studs.

It's more about better wheel choice, 5 lugs is also visually more pleasing especially with 5 spoke rims, and by far it's easier to upgrade brakes.

srtthis · Nov 9, 2010

adamsgt said:
so i guess the 4 lug wont hold up to a 347

will be fine... buddy of mine has a 342 with a 101mm turbo on it thats still running a 4 lug 93 cobra set up.

Kdubslugga · Nov 9, 2010

2000xp8 said:
The switch from 4 lug to 5 lug isn't really about the strength.
You could always buy 31 spline 4 lug axles with cold hardened studs.

It's more about better wheel choice, 5 lugs is also visually more pleasing especially with 5 spoke rims, and by far it's easier to upgrade brakes.

Took the words outta my mouth

2000xp8 · Nov 9, 2010

srtthis said:
will be fine... buddy of mine has a 342 with a 101mm turbo on it thats still running a 4 lug 93 cobra set up.

Hopefully not on slicks or good drag radials.

srtthis · Nov 10, 2010

2000xp8 said:
Hopefully not on slicks or good drag radials.

315/60-15 BFG... not really sure why when he built the rear he didnt go to a 5 lug set up but it had a 8.50 legal cage before it had subframes and everything on it.

adamsgt · Nov 10, 2010

i'll have to do the 5 lug upgrade anyway to get therims i want. they dont make the weld pro-stars in a 4 lug pattern. might as well get the 31 spline diff too.

4 lug or 5 lug

adamsgt

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CarMichael Angelo

my rearend will smell so minty fresh,

Mustang5L5

That is…until I whipped out my Bissell

adamsgt

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2000xp8

srtthis

the guy doing it does every local racers rear end

Kdubslugga

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2000xp8

srtthis

the guy doing it does every local racers rear end

adamsgt

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4 lug or 5 lug

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