GM crate LS7 454 specs & price

[Big Block Bill]

"Even new in the crate, they still need to be torn down"

I have had 3 of these over the last 28 years, and they all needed to be torn down and gone through. If not you were asking for failure. The last one lasted 975 miles before it spun a main bearing resulting in a complete overhaul. It currently resides in my collection with 13:1 pistons & a .645 Competition Cams, Hydraulic roller set up in it and has never been fired. You can have that for $6500.00 if you want it, I think the machinist's bill was $3800.00 just for the machine work and pistons (Not trying to steal anyone's thread here) The LS6 versions were more reliable. They had the XAA stamp on the pad, were 9 to 1 compression and a lot more user friendly. They ran on pump gas.

I currently have my last LS-6 (XAA) in my 1966 Impala SS. I never paid more than $3500.00 for an LS-7 crate engine, but the last one I bought was in 2005. So I'd call it $5500 tops for an N.O.S. XCH LS-7 in the crate as a current value. When you could keep one together they ran in the 11:00's all day long right out of the box. I hope this has some value into what you are looking for.

Bill