225 or 231?

225 or 231?

rocmoc

Jeeper
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Location
Tucson, AZ & Mexico (both Mainland & Baja)
Vehicle(s)
1970 CJ5, V6, 3spd, power steering, headers, electric fans, upgraded larger radiator, '78 grill, disc brakes (front only), swing pedals, hyd clutch, extended front shock mounts, upgraded front driveline w larger u-joints, warn OD, D30 front diff, lockers, 2100 carb, working on a '74 tub replacement, '78 windshield frame with '78+ Acme hardtop
Now the proud owner of two (2) CJ5s. '69 is 85% for off the road use with lockers, 4:88 gears, overdrive, headers, 33" tires, power steering & disc brakes. '70 is 85% non-4x4 use pulled behind a motorhome and is ALL stock with 3:73 gears, no overdrive and 29" tires. I have to work on both V6 engines. I can install them in either CJ5. Which CJ, '69 or '70, would you put the 225 in?

Thanks rocmoc n AZ/Mexico
 
Off-roader. The very heavy flywheel used on the odd-fire 225 makes it hard to stall. It is also said to be cammed for more low RPM than the even fire 231. Know if you had the one-year only 231 odd-fire or a FI 231 that would change my mind. Loved the 225 in my C101...
 
Now the proud owner of two (2) CJ5s. '69 is 85% for off the road use with lockers, 4:88 gears, overdrive, headers, 33" tires, power steering & disc brakes. '70 is 85% non-4x4 use pulled behind a motorhome and is ALL stock with 3:73 gears, no overdrive and 29" tires. I have to work on both V6 engines. I can install them in either CJ5. Which CJ, '69 or '70, would you put the 225 in?

Thanks rocmoc n AZ/Mexico

:)They both should be 225's the 231 was not put into production by GM again till 1975
:D:D:D:D
 
:)They both should be 225's the 231 was not put into production by GM again till 1975
:D:D:D:D

Correct. The 231 casting number is 1977. PO or someone in the past removed the beloved 225. 231 has even-fire HEI.

rocmoc n AZ/Mexico
 
Buick 225 oddfire is a good wheeler motor , but the 231 you can throttle body it or fuel inject it odd fire gotta run carb
 
Buick 225 oddfire is a good wheeler motor , but the 231 you can throttle body it or fuel inject it odd fire gotta run carb

:)Papa............

Howell FI claims they have a way of doing it on an odd fire and I have heard of other guys using a crank trigger pick up that pulses @120 degree spread that will also trigger the injector.
:D:D:D:D
 
Send a link on the 225 howell fi then please :) I could not find anything on howell fi web site .
 
Send a link on the 225 howell fi then please :) I could not find anything on howell fi web site .

:)I don't have a link................but I have heard they have a solution.

:D
 
I Had searched and searched when rebuliding my 225 in my m38a1 , and never found anything for the 225 only the even fire 231 :)
 

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