When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Anybody know if the 351m and 400 use the same flywheel,before I go pulling one off for no reason.I guess the balancers are different but useable.If I use a 351 flywheel and 351 balancer on a 400,everything should work out,right?Thanks.
I went to partsamerica.com and plugged in a 1980 f250 with a 400. Then I plugged in the same truck with a 351m. The numbers for the flywheel and flexplate were the same.
[updated:LAST EDITED ON 29-Sep-02 AT 02:18 AM (EST)]Are you working with an auto trans or standard shift? They are the same flexplate for the auto trans for sure, and should be the same for a standard shift.
And keep whatever balancer on the motor it belongs on. I don't think you need to swap them.
I believe that the 351M has an 11" clutch, & the 400 has a 12" clutch. This will make a difference when bolting up the pressure plate if you are working on a standard shift. The holes could be transferred and drilled/tapped if req'd.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.