[Tim Corcoran]

I'm building a new 400 stroker engine to replace the 455 (41.5 X4.25 474) that was destroyed at Norwalk this year. I plan to use the same cam, heads, intake, carb and headers that was used on the 455.

Previous build was .060 over 455 converted to program engineering 4 bolt main caps, J&E pistons, Eagle 6.8 H beam rods, and 4.25 Ohio cast crank. Ultradyne solid roller 264/268 @ .050, 176/187 @ .200, .3944/.3944 Lobe Lift .592@1.5 Harland Sharp rocker arms, LSA 108, 1-7/8 Indian Adventures headers with Flowmaster merge collectors, Victor intake with 1050 dominator.

I am doing a documentary of my new build step by step to share on the board. I am by no means an expert engine builder just going to share my build with others. who may want to follow along. I'm starting with a 71 400 block purchased at Norwalk, it was supposed to be a STD bore but it looks to be bored .005 to a 4.125.

So far I have had the block hot tanked and used a wire wheel to clean off remaining paint and rust. Next step to de-burr sharp edges on the casting flash around the lifter bores, install a SD Performance lifter bore brace and hard block up to the water pump holes.