front springs to accommodate sb350

[comancheel]

I am doing a chevy 350 swap with a ax15 into my 86 longbox.

I was going to use zj springs and spacers for a few inches of lift. I figured they held up a v8 so Th ey should be fine. But was recently told that they may not be enough to.hold the weight.

Any info or comments would be greatly appreciated as I'd like my truck to be proper.

[Eagle]

What's "proper"?

 

The ZJ V8 was a Mopar 318, which was an old, heavy engine. Of course, the XJ/MJ 4.0L in-line six is an old, heavy engine. The ZJ V8 springs are the same as the XJ Up Country springs in a 4.0L, and they ride 1-inch higher than stock in a 4.0L XJ (or MJ). I'm not up on SBC specs but I doubt the 350 would/could weigh significantly more than the Mopar 318 or the Jeep 4.0L, and it might weigh less. I would expect between 1 and 2 inches of lift -- but that's purely a guess.

[Incommando]

A dressed 4.0 goes about 600#'s. There were a ton of different 350's but they also go about 600#'s dressed for an older all cast iron version.

[husky410ohio]

I have 4 wheel drive and Superlift 3" lift with longer lower control arms and shocks from Tyres International and works for my 350.  If you have 4wd this is the minimum lift you need or the oil pan will hit axle or the front drive shaft hits the oil filter.