So I have a 78 blazer, and I found a 14 bolt out of a 86 3/4ton. My question is will the spings and axle fit right under and do I have to modify the 14 bolt spring perch's If I decide not to use the springs out of the 3/4 ton.

I though that I read the 3/4ton spring seats did not line up exactly. Also my springs are pretty gone on my blazer and that is why I was wondering about the 3/4 springs fitting. Thanks.

it worky.

bolty it uppity.

spring can be either 52 or 56" on both vehicels so you have to check the length but other wise they will bolt right in.

the 3/4t will swap in, 1 ton would need to be moved.

Easy as pie, you will need a conversion u-joint if
you have auto trans. just did this on my 89.