4-BTDC and the firing order is the same as any SBC. My shop manual and the emmisions sticker on my 1975 K10 says timing should be 4-BTDC. I have mine set at 14BTDC and it runs great. I have a mild cam and an MSD box though...
4, to 6 degrees advanced, or BTDC.
4, to 6 degrees advanced, or BTDC.
6 degrees advanced, or BTDC.
a 400 small block Chevy has a 4.125" bore.
was just checking myself, but to give you an idea mine is 12 deg btdc.
1981 was the last year the 400 small block was made.
Yes.
The firing order for the Pontiac 400 engine is that the small block powers the big block.
The 400 Chevy is a small block engine. The 400 BIG BLOCK Chevy does not exist! 402 big block Chevy does. it seems in the early 70s Chevy put 402s in their pick ups and they had 400 badges. this opened the can of worms known as the non-existant big block 400.
4, to 6 degrees advanced, (BTDC) initial, or 30, to 32 degrees total.
get a big block or bore it 54 over
No