Re: ZL1 block found
Having done quite a bit of Aluminum welding, the entire Block must be preheated (600 deg F) or so before welding. Aluminum has a fairly high coeffecient of expansion so when the weld cools, it contracts, causing stress and warpage. Also, preheating allows better penetration of the weld due to less heat draw into the block. The Aluminum alloy will make a difference as well, cleanliness, etc. Welding on die cast parts is difficult because of the higher silicon content and general imputities in the Aluminum.
It can be done with the right steps.
Paul
__________________
70 Camaro LA Z-28 03B Citrus Green LT-1 M-40 3.73's
69 Camaro X-77 Z-28 10C Cortez Silver M-21 3.73's Deluxe Project X - SOLD
69 Camaro X-77 Z-28 01B Garnet Red w/Black top, M-20 3.73 Deluxe Houndstooth
|