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Block # gurus...

Update!
So internals are full of lube...im 95% certain this engine was never fired up after assembly.
Dished pistons (look factory) sit less than .010 (about .007-.008) below deck. Cam, lifters and rockers look new, pushrods were reused. On the 906 heads...they have been tanked and cleaned and obviously gone through with no traces of carbon on anything.
Does anyone know the volume of the piston dish? I suppose i could cut a plexi disk and CC them...but if anyone happens to posess that knowledge i would appreciate it.

Depending on how that goes...my plans include: heads go on a shelf. My new to me Eddie RPM heads go for a cleanup at the machine shop, and lite cut to bring the 84cc chambers down a little. Cometic MLS .027 gasket, voodoo hydraulic 703 (220@.05, .474/.495E in at 8degrees), 1.6 rockers (prolly new pushrods), Eddie RPM manifold, 770 AVS2.

Thoughts? I already have the cam/lifters/rockers/heads/carb/headers
 
Photos

20210202_101403.jpg 20210202_101418.jpg 20210202_101447.jpg
 
use a piston stop & a degree wheel to locate true TDC... Lower the piston down the bore, apply grease around the full perimeter of the bore, raise the piston tp TDC... Use your plexiglass to seal the top of the cylinder & cc that entire space...

When doing compression ratio calculation use that volume as the dome volume & list the deck height as zero...
 
That makes more sense, but it really doesn’t change anything. Those last four numbers are just a serial number, So that extra number doesn’t affect the assembly date.
 
Side note...just checked...the exhaust manifolds are 66-74 b body...casting date 09/19/1967
 
Those pistons and heads with less than 84 cc chambers are gonna be in the low to mid 8-1 C/R range... Don't over cam it or you'll have a dog...
 
Those pistons and heads with less than 84 cc chambers are gonna be in the low to mid 8-1 C/R range... Don't over cam it or you'll have a dog...

The 703 has an small overlap..like 24 degrees...its a pressure builder
 
I was hoping the closed chamber might make up for some of that...the 906s usually cc about 94+

Maybe id be better off whacking .060-.090 off the 906 and using a shim
 
The exhaust manifolds are almost certainly not the HP manifolds. If you list the part numbers I can tell you if they’re HP manifolds or not
 
I was hoping the closed chamber might make up for some of that...the 906s usually cc about 94+

Maybe id be better off whacking .060-.090 off the 906 and using a shim

906's are typically 88-92 cc's... Cutting .090 off will require cutting .120 off the intake side which means the valve cover gasket probably won't seal....

Choose a cam that works with low compression & live with it... Or put new pistons in it now.. The bores are fresh, new pistons while reusing everything else isn't that big of a deal...
 
True...guess its time to call UEM to see if the kb400s or icon 167s work with Eddie heads.
 
Definitely use new moly push rods. The cam looks like they only put assy lube on the lifter and not the cam, some of the lobes look dry.
 
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