Those running 351's and c4's

[TrickStang37]

Which type of c4 are you running? case filled or pan filled? I want to run longtubes (1 3/4) and have read that pan filled can cause problems on "some" vehicles, was seeing if the mustang fell under the "some" category. If you run 1 5/8 please post too, i would rather have some info than none. I dont think there should really be problems considering people run aod's with 1 5/8's but would like peace of mind either way. thanks.

 

[Jc69Stang]

I run mine with 1 3/4' Super comps, pan filled C-4 no problems, my old 1 5/8" were the same way. Both were Hooker.

 

[69Rcode_Mach1]

My 351 with Hooker Comps cleared a C6 pan before the swap so a C4 should be easy.

 

[D.Hearne]

The "case fill C-4's have the smaller 157 tooth bell. The "pan fill" use the 164 tooth. The difference with headers would be the right side tubes interfering with the trans fill tube and in some cases the wider bellhousing.