402 stocker engine

[Ralph A Powell]

When you doing all this have a blowby meter hook up to it. When we had our B-Dragster you could spin the starter and if the float moved in the tube there was blowby!

Originally Posted by SDT1DYI

I assume it's an Automatic?
Get the motor up to 120-130 on jack stands. In gear , hold the brake , put it on the Convertor to load the motor maybe 5 6 seconds. 180- 190 temps cool it repete. Or take to the track and make 2 WOT hits.
Again, suggest that you use Maxima break in Oil.
Where is the timing set at? Locked out distributor advance? I would be very conservative with it. BB 402 Stocker start with 32 33 degrees go from there.

[Jrh5220]

Originally Posted by Ralph A Powell

When you doing all this have a blowby meter hook up to it. When we had our B-Dragster you could spin the starter and if the float moved in the tube there was blowby!

Have not had a blow by meter in 20 years.this is the only the 2 nd engine I had do these,one was many years ago . Sold it I have race bbc for
Longer than care to remember. These is one is been the worst. I have had it apart 4 times hone it each time with the same results. The engine seem to leak fairly well 2.5 to 3.7 warm. Ran 10.64 at 128.00

[Ralph A Powell]

Leak down will only tell what?s going on at the top of the cylinder. Another easy test is when doing leak down is rock the piston at TDC let it go to BDC and pull the piston up with leak down tester still attached watch the meter as you pull up to TDC it takes a ratchet with extra long handle.