Hey Mike! Isn't the 261 an older motor than the 250??

At any rate, if you don't get any answer, you might try asking this in the Engine and Driveline Forum.

Regards,
John

~ John

A kid raised on Hotwheels, Matchbox and Tonka cannot be reasonably expected to own only one vehicle as an adult.

1949 Chevrolet 3804
In the Legacy Gallery | In the Gallery Forum
1973 IH 1310 Dump
1963 Kaiser M38A1
2001 International/AmTran RE3000 "Skoolie"
2014 Ford E-350 4x4 (Quigley)