Morning all :
is there any advantage or disadvantage between a completely rebuilt 225 aluminum block and the 225 iron block currently in my 1987 dodge B150 that is in need of rebuild which i plan on doing when time permits , i was thinking on just swapping them out and running the already rebuilt until i get to my original and i will have a fresh spare motor ~~ ii'mnot to familiar with the aluminum block 225 except what i have read , the age and adjustments i would have to do ~~ this might be dumb but just a thought ~~

thanks all keep on sixin

The biggest problem with using the aluminum engine (or cast iron also), in your 1987 truck is the crankshaft. The pilot hole and centering flange on the end of the crank got larger between 67 and 68. The early engine (all aluminum slants) will not go in unless you change the flywheell (if stick) or get a custom torque converter built (if auto).

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

Thanks for your input , i guess the best way for me to do this is just rebuild mine ~~ found a killer deal on a complete motor ready to drop in , i wouldn't even know where to begin on a custom torque converter or a price for that matter , i have a 3spd auto 727 in my van , this motor i am looking at was hooked up to a 904 trannie im told :


thanks again , keep on sixin

904 and 727 flex plates are different,dont ask me how I know.mark

the only fix is to remove the crank and have the pilot hole enlarged then use the flexplate with the 727 convertor, if the 727 has the small 10.5in covertor the 904 flex plate will work.

The aluminum blocks have a head gasket sealing problem If the builder does not know to NOT chamfer the top of the cylinder (all most every re-builder chamfer the cylinders to make it easy to install the piston/rings). Also I think it takes a special head gasket.

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50 chrysler,54 Plymouth, 64 Valiant conv 4 speed, 66 Valiant V8 wagon, 70 Challenger R/T 440+6 conv 4 speed,80 Colt, 98 Neon ACR,84 Honda V45 Magna
Taking care of 57 300C conv,48 T&C conv. Missing my 67 GTX and 36 Ply coupe