Has anybody taken these Cylinder Heads in 'relatively' stock condition,
and performed a swap, to see just which Head performed better.
The #2780915 {regarded} as the 67' 440 'HiPo' Head.
The #2843906 {regarded} as the 'Big-Mouth' Head.
and performed a swap, to see just which Head performed better.
The #2780915 {regarded} as the 67' 440 'HiPo' Head.
The #2843906 {regarded} as the 'Big-Mouth' Head.