LS engine does not fit in 1969 Nova

[Moabdude]

I wanted to put the motor in today but it didn't go in.
Its a 1969 Chevy Nova with stock frame. The motor is a LS1 from a 2000 Camaro.

The Alternator hits the frame and on the drivers side the holes of the mounts are far apart.
Passenger side is almost in.....

I have stock motor mounts and frame brackets.
The adapter plate is just a simple flat piece of metal.

Please help. What is the solution?
https://www.pro-touring.com/attachment.php?attachmentid=118767&stc=1https://www.pro-touring.com/attachment.php?attachmentid=118768&stc=1https://www.pro-touring.com/attachment.php?attachmentid=118769&stc=1https://www.pro-touring.com/attachment.php?attachmentid=118770&stc=1
https://www.pro-touring.com/attachment.php?attachmentid=118771&stc=1

[Alwhite00]

pull the alternator off and see if it drops down on the mounts, looks as if it will. my cousin has a 9 Camaro (same subrame as you) and he had to clearance the frame for the alternator to clear, not sure if he heated it and dinged it in or cut/welded but it definately will not fit as is.

[Z06vet]

Its def close to dropping in. With the F body alt, you cant push the motor too far back unless you notch the frame. You can either get mounts that move the motor forward or use a 3 position motor plate (dirty dingo double D). I have used these on 3 builds w Fbody acc. The mast pan gives great clearance, but the holley 302-1 pan will be very close to touching crossmember. I have used thick grade 8 flat washers under the engine frame stands in one case for a bit of extra clearance for the Alt & holley pan. Scott

[dirty rick]

There are 3 different stock accy layouts. Camaro, Corvette, & Truck.
There are also many aftermarket layouts.
Shop around before spending money or cutting stuff.
I would only let accy location determine motor location as a last resort.
You want the motor as far back as practical.
If you have a mind for any competition, set motor as far back as allowed.