LE9 305 w ESC Performance upgrades '86 k5 Blazer

[Ricko1966]

CAMSHAFT! and heads are the big restrictions on an LE9.

As far as you blue smoke at startup. If you have good oil pressure and compression it is probably jus valve seals.
That is an easy repair.

If it's got 416s or 601s they really are not bad heads, yes there are better,but there are much worse.

 

[1979 K10]

If it's got 416s or 601s they really are not bad heads, yes there are better,but there are much worse.

I'll have to look for the head casting numbers where ever those are. The engine is caked in 40 years of oil and dirt.

 

[Ricko1966]

I'll have to look for the head casting numbers where ever those are. The engine is caked in 40 years of oil and dirt.

More work than you want to do just to satisfy curiosity.. cast into the head by the rocker arms underneath the valve covers. Seriously if you want performance,change engines. Or put boost on that one. Swap your boost to the next engine when this one dies. Not kidding

 

[Turbo4whl]

^^^ BOOST^^^

When you think about newer vehicles, they mostly have smaller displacement engines. So how do they have enough power? Boost is the answer.