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Difference between EA SPAK CFI 3.9L Head, & EB MPFI 4.0 Head. +EA SPAK Parts For Sale

2K views 5 replies 4 participants last post by  John_xr6 
#1 ·
Hi, I picked up a EA spak falcon 3.9 cfi. Was wondering whether there is any differences between the head on my EB and the head outta the EA?, Would it bolt straight onto my block, is there any differences in the valvetrain?.

Also if anyone needs any parts, I got shitloads of spares of the EA wreak.

Cheers dudes,

Brett
Perth, WA

samson351w@hotmail.com
 
#2 ·
Is the EB a 4.0 or a 3.9?

3.9 head will be the same, 4.0 will be different. I'm pretty sure they bolt straight on, someone will confirm that though.
 
#5 ·
So you're wanting to put the EA head onto the EB? Don't bother, EB head is better.
 
#6 ·
the EB head has a better shaped combustion chamber and the inlet ports are slightly bigger. the EB rockers also have a smaller hole in the top of them (less prone to breaking) and are shimed to reduce rocker post wear unlike the EA type. Go the EB setup.
 
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