Customer Reviews 1 item(s)
- 25-1026-1 fit perfectly in 70 Chevelle with LS3 & 6L80e
- I used Hooker standard LS3 motor mounts (not forward or back but places engine in stock position) and modified my 70 Chevelle cross member (dropped the bottom of the mount to about 3/4" below the lowest point of the crossmember) to fit the 6L80e into the tunnel without cutting the tunnel. I had to "hammer" (4) top of tunnel locations to clear 4 places on the top of the 6L80e. With that said, these headers fit perfectly with no modifications at all. Frame to header probably has a 1/8" clearance on driver side, and about an inch clearance on the passenger side. There was plenty of 6L80e transmission clearance on both sides. The headers came out the back to my stock exhaust system almost perfectly. And, these are good looking, built solid, good quality all around, and a whole lot cheaper than the big brand headers!!