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  1. John Lenahan

    Mysterious cold Tranny jolt

    As the weather got a bit colder nothing crazy happened, until it got to about 20ish degrees. When i start my blazer in the cold, (it has a sm465 w/np208) and when i shift into granny or reverse, its like something inside is frozen. my smart idea was to put it in 4lo, in granny and let the...
  2. John Lenahan

    20" Rims - Drum Brakes?

    Just depends how big of 20's you're planning on running (1/2 ton it looks like?) you shouldn't have to change anything if you stay somewhat close to a factory size tire. The bigger the wheel/tire the more rotational inertia/mass it has, the more stress it puts on parts, so if you live the...
  3. John Lenahan

    K10 lift kit fit 1 ton axles ?

    I believe the axle tubes on a 12 bolt are 3.00" and the 14 bolt are 3.25" so you'd need new U-bolts and the brackets. the perch width and everything else should be able to direct swap axles otherwise. might have some fiddling to do with the brake lines.
  4. John Lenahan

    Wheel bearing exploded!

    Everything was seated properly? i'm not an expert on dana 60 rear axles but i've done plenty of bearing replacements and caught myself from time to time not seating the bearing/races in all the way and it causes a bind. I don't know of a way that you can check bearing Pre-load since i've...
  5. John Lenahan

    4in lift with 35s, anything additional I should buy

    Just a recommendation. On the transfer case cross member, there is usually a small metal collar/spacer like deal, that should be on the bolt below the cross member, if you take that collar off and drop the cross member and put it between the frame and the cross member, it'll drop it down about...
  6. John Lenahan

    Aftermarket bumper

    So i'm in the process of putting a new motor in my truck, (i'd like to thank everyone that gave advice from my last post) and while i had everything apart, i was wanting to put a new bumper on the front (preferably with a winch mount) Are there any aftermarket ones that would bolt right to a...
  7. John Lenahan

    350 to 454 advice/help?

    I had a few questions that hopefully you know more about than i do. I've been looking around trying to find some answers on a 350 to 454 conversion, However i haven't found anything specific to what i'm asking about. I have a 1978 k20 with a blown original 350, and have access to a 1977 c30...

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