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**AussieinNC** · 07-04-2018, 03:41 PM

78 on power boxes are a better feeling box than the earlier ones...and yes...3.5 turns ltl...and metric style fittings.

Make sure the chassis has the clearance dimple where the box mounts ....being a "70" is should have it, even though it was a manual box from factory....

but I have seen 67's masquerading as later models...

What power assist are you using on the brakes?

Hydroboost is an easy conversion and will work fine with the current LS pump.

07-04-2018, 03:41 PM	#5
AussieinNC Moderator Join Date: Jun 2017 Location: Cherryville, NC Posts: 2,153	Re: Help Me Choose Correct P/S Box 78 on power boxes are a better feeling box than the earlier ones...and yes...3.5 turns ltl...and metric style fittings. Make sure the chassis has the clearance dimple where the box mounts ....being a "70" is should have it, even though it was a manual box from factory.... but I have seen 67's masquerading as later models... What power assist are you using on the brakes? Hydroboost is an easy conversion and will work fine with the current LS pump.