The Ford Barn - View Single Post - Changing Heads Original / High Compression

old31 · 10-23-2018, 09:12 AM

Cape, I had 5.5 and then went to 6.1. It made a big difference. If i were you I would go directly to the 6.1, have it checked for straightness and go with grade 8 bolts.

With the 6.1 over a 4.2 and 5.5 you really have to play more with the spark lever especially on hills, no matter how small.

10-23-2018, 09:12 AM	#12
old31 Senior Member Join Date: Jan 2016 Posts: 2,103	Re: Changing Heads Original / High Compression Cape, I had 5.5 and then went to 6.1. It made a big difference. If i were you I would go directly to the 6.1, have it checked for straightness and go with grade 8 bolts. With the 6.1 over a 4.2 and 5.5 you really have to play more with the spark lever especially on hills, no matter how small.