le baron
keeping it simple.
what's the correct name for individual rocker shafts?
you know one to a pedestal, valve, rocker and pushrod.

Have A Nice Day!

 

Ford at one time referred to them as "sled rockers". The Boss 429 has little short shafts with two bolts.

 

le baron
ran across this looking at wikipedia Chrysler Hemi.
'Top-fuel racing organizers limited the bore spacing of engines until very recently, when under pressure from Ford and other manufacturers, the bore spacing allowed was increased to 4.900" - this allows other engines such as the Ford 385 series to begin to compete.'
i'll pass the ball to you to figure out what it means.

Have A Nice Day!

 

The bore spacing is the center to center distance between the cylinder bores. If you look at the specs on the first generation Hemi you will see it is a longer stroke engine for it's displacement than the Ford 385 series. The BBC, also called the MarkIV is similar.

392 = 4 X 3.91" bore center 4.5625"
426 = 4.25 X 3.75" bore center 4.8"
429 = 4.36 X 3.59" bore center probably 4.9"
460 = 4.36 X 3.85" bore center probably 4.9"
454 = 4.25 X 4" bore center 4.84"

You can see that the 4" bore of the 392 was quite a bit smaller than the 385 engines and the 426 and 454 are still almost 1/8" smaller. Add cylinder walls and water jackets and you can see why a bore spacing restriction kept the Boss 429 headed 385s out of NHRA competition.

 

le baron
how about some comments on the
'deep skirt block'?
426 & 440 have them.
Cadillac 429-500 has it.
i'll go look and see if Ford 429-460 have them.

Have A Nice Day!

 

You're talking about a block that extends below the crank centerline. 385 series engines never used them, Y blocks (so called for the block design) Interceptor (FE) engines, MEL 383, 410, 430 & 462 engines and Modular engines are the only Fords with that design. MOPAR B series blocks 350, 361, 383, 400, 413, 426 & 440 all are that way, Buick nail heads, Cadillac 472 and 500, I think the 429 was the last iteration of the early Cadillac OHV V8 that started in 1949 AMC 250, 287 and 327 engines (has a cast in HN on the heads) are deep skirt also. Chevrolet, Pontiac, Oldsmobile and late AMC engines are not. FWIW, mod motors are deep skirt and cross-bolted.

 

le baron
from wikipedia Ford 385 Engines
'This design was a departure from the paradigm utilizing thinwall casting methods and a skirtless block to reduce weight.'

what is the 'screw in stud' situation for
the 429-460?

Have A Nice Day!

 

My 71 429 had screw in studs for the rockers. You would have to use the earlier heads.

 

le baron
how would you 'blueprint'
a later 429 or 460?
i've heard stock is mini freeze plugs at
end of oil galleries.
i want to have machine shop put in
threaded ones with allen wrench heads.

Have A Nice Day!

 

"Blueprinting" an engine has nothing to do with how the oil galleries are plugged. It is fitting everything up to design specs. Piston to deck measurements, ring gaps, bearing clearances, valve spring tension and height, cam timing etc. It is a labor intensive job, but well worth it in the end.

 

le baron

blueprinting items you mention are all good advise.

i myself would include these items while engine is apart:

removing excess flash around valve lifter gallery w/dremel tool

running in all head bolts to look for head bolt holes not tapped right.

replacing oil gallery freeze plugs with screw in ones.


Have A Nice Day!

 

85 le baron

just took off flexplate from 292

can see screw in oil gallery plugs

and that goes for your dog too!

Have A Nice Day!

 

The items you mention I consider normal rebuild work for me. I actually use a proper size bottoming tap in all bolt holes. I clean all my oil passages with appropriate sized bore brushes 30 caliber works well and the brass bristles don't scratch the walls of the passage.

 

le baron

Mopar Big Book said head bolt holes.

may have said main caps too it's been awhile

bottomline.

if i run across Ford motor i'll know a little more about them.

here's a tidbit

Mercruiser is not part of Ford

could have fooled me!

Have A Nice Day!

 

Mmmm. Massive! lol