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Originally Posted by 87chevy.com
Well "fits like a glove" was not said today.... with the motor and trans in, using 3/8 plate as the adapter but not bolted to the clam shell... trans raised till it contact's the tunnel the driveline angle is about 7-8 degreese. Oh and the oil pan rests on the cross member. Could shim the motor mount frame bracket, cut the cross member, or make a custom mount. 2 of the 3 woukd raise the trans even higer.. Yeah I know dirty dingo sells mounts, but the crossmember is still an issue and says low mount ac is an issue.
Think I'm just gonna make my own and call it good.. I'll post pictures tomorrow with the truck manifolds on, hopefully they fit... dont want to build another set of headers... it's rewarding and time consuming all at the same time.
Modifying the oil pan isn't a big deal but leaving it at this height leave the steering linkage rod close to the oil pan.. and as the motor mount gets worn it is like to contact. I also havnt turned the steering wheel to see if the rod raises when tm steering wheel is turned.
More tomorrow..
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Your discoveries lend some insight into why we modeled the bottom of the coming Holley LT pan after the geometry of the 302-2 LS pan. Another LT geometry characteristic I'm not sure I shared with you earlier is that the engine mount bosses on the LT block are 3/8" taller on each side of the engine than they are on the LS blocks (CAD verified). This means the use of 3/8" thick adapter plates as was typically used in many LS swaps is going to position the crankshaft height of an LT engine higher in the chassis than would be the case with an LS engine. This is one of the reasons I divorce myself from the stock engine brackets entirely, so as to have more freedom to position the engine height exactly where I want it.