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351W 1969 Code Block Wanted
#1
Shooting fror the moon here.

My 1970 XR7 351W original motor, 250k miles just cracked a cylinder.

No idea how it happened. The top of the piston has broken off. No idea where the broken piece is.

Would like to keep the car numbers correct.

Any help is appreciated.

ugh. That's what I get for making fun of Doc and his hood.

[Image: 11jmcuc.png]
351C Bold Manners, Brash Attitude
Favorite Teams: Michigan Wolverines and Whoever Is Playing Ohio State.

When I drive past a herd of cows, the cows MOO at me
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#2
Wolverine;130163 Wrote:Shooting fror the moon here.

My 1970 XR7 351W original motor, 250k miles just cracked a cylinder.

No idea how it happened. The top of the piston has broken off. No idea where the broken piece is.

Would like to keep the car numbers correct.

Any help is appreciated.

ugh. That's what I get for making fun of Doc and his hood.
You might want to look into the possibility of having the cracked cylinder sleeved.....Mark
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#3
X2 There's nothing wrong with a properly installed sleeve.

Jeff T.

Low buck, touring style, '73 Convertible "rolling restoration", 351c, 2v heads with a shave and a haircut, Performer intake, Holley 650(ish), roller rockers, screw in studs, guideplates, stainless valves, Duraspark / Motorsports MSD, T-5 conversion. 1-1/8" front, 3/4" rear swaybars KYB shocks and some home brewed subframe connectors. Future plans; JGC steering box, Cobra brakes and... paint, interior, etc.

When I die I want to die like grandpa, peacefully in my sleep... not screaming, like his passenger.

[Image: 1_12_09_14_10_15_11.png]
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#4
When my engine came up with a cracked number four cylinder
the crack was in a location not suitable to use a sleeve. At least
that was the position of two mechanics that inspected it. So I
bought a rebuilt Cleveland long block from Don of OMS.

mike

[Image: 1_11_11_13_11_50_27.png]
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#5
My uncle bought a brand new chevy in 74. years later he wanted me to rebuild the engine. When i tore it down I found one cylinder with a sleeve, and I know it came that way from GM.
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#6
I would sleeve it, but it is at .040 now. It will be at the machinist Monday, but I need a backup.......
==================

I think I will have to correct this statement. If a cracked block is keeping you from sleeving, take a look at this sleeve job:

http://www.popularhotrodding.com/enginem...ewall.html

[Image: 11jmcuc.png]
351C Bold Manners, Brash Attitude
Favorite Teams: Michigan Wolverines and Whoever Is Playing Ohio State.

When I drive past a herd of cows, the cows MOO at me
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