Which heads?

spartanv8 · Post by **spartanv8** » Mon Aug 24, 2009 6:21 pm

Thank you very much Sidecar. Just as a matter of interest would I have the 4 outer holes in a P6 block if they are a later addition that has now been discontinued?

Fil

poo slinger · Post by **poo slinger** » Mon Aug 24, 2009 7:25 pm

you will have the holes, but i don't think they are nessicarry even if you have a 14 bolt head, only use 10 of them

spartanv8 · Post by **spartanv8** » Mon Aug 24, 2009 7:52 pm

So have the blocks always had 14 holes but only 10 were used to start with and then 14 and now back to 10?

Fil

CastleMGBV8 · Post by **CastleMGBV8** » Tue Aug 25, 2009 12:27 pm

Fil,

3.5.3.9 & 4.2 all had 14 bolts for the heads but the recommendation was that if the outer row of bolts were fitted that they should not be fully torqued but just pinch tightened,

The later 4.0 & 4.6 engines only have 10 bolts for the heads.

Kevin.

spartanv8 · Post by **spartanv8** » Tue Aug 25, 2009 6:24 pm

Thanks Kevin

Is that because the 14 head bolts worked with the Buick engine and heads? Just wondering really!!

Fil

CastleMGBV8 · Post by **CastleMGBV8** » Tue Aug 25, 2009 6:35 pm

No they had the same problem.

Kevun.