Modified Stock and MX

Jim Caughlin · 11-16-2015, 04:03 PM

Roland,

The fine point in the rule book is SS/MX states 'automobile engine' whereas the Comp Altered rules says ' automobile type engine'. That's why the Merc motor isn't legal as it is actually a marine motor and wasn't ever installed in a car. My opinion is that what you are proposing would be legal as the 2.3 pushrod shortblock is a production auto motor, the fact that the head wasn't orig intended for that motor doesn't seem to me to be an issue, it does have a Ford part number in spite of the extent of the mods.

The other motor that I don't think is legal for SS is the Fontana 4 cylinder motor with a Yates Cleveland type head. As Ford didn't have a viable pushrod shortblock, they had a Chevy II block recast by Fontana with a Ford head bolt pattern, Ford logo and a Ford part number. Instant Ford motor! Once again, legal for Comp Altered, not legal for SS.

Jim Caughlin

11-16-2015, 04:03 PM	#17
Jim Caughlin Senior Member Join Date: Mar 2002 Location: Woodburn, Or Posts: 684 Likes: 82 Liked 802 Times in 244 Posts	Re: Modified Stock and MX Roland, The fine point in the rule book is SS/MX states 'automobile engine' whereas the Comp Altered rules says ' automobile type engine'. That's why the Merc motor isn't legal as it is actually a marine motor and wasn't ever installed in a car. My opinion is that what you are proposing would be legal as the 2.3 pushrod shortblock is a production auto motor, the fact that the head wasn't orig intended for that motor doesn't seem to me to be an issue, it does have a Ford part number in spite of the extent of the mods. The other motor that I don't think is legal for SS is the Fontana 4 cylinder motor with a Yates Cleveland type head. As Ford didn't have a viable pushrod shortblock, they had a Chevy II block recast by Fontana with a Ford head bolt pattern, Ford logo and a Ford part number. Instant Ford motor! Once again, legal for Comp Altered, not legal for SS. Jim Caughlin