Please help me to identified this 1977 Grand Prix SJ motor!!

[Wolf001]

I look for the VIN for the 5ft letter, but I couldnt see nothing.

Thanks!!

 

[shotgun]

Looks like you have the redheaded stepchild of the Pontiac family, the dreaded 301.

The poor 301 never had a chance in those 4500# barges.

Save the mounts and put a 455 in.

 

[Wolf001]

I taught they were no 301 in 1977 SJ Model???

 

[GP403]

they were still putting 400's in for '77, dunno if the 301 was even an option yet. VIN would help.

 

[Wolf001]

when I read this ( it's in french )

Its mark that the 301 was standard for the LJ and the the stadard motor for SJ is a 400!

 

[shotgun]

Not syre of the model break down ,but the "Y" code 301 was around in 77 putting out a neck snapping 135HP.

If yoy were to show a shot without the air cleaner,would could tell if it is a 301 or traditional Pontiac.

Also casting numbers off the exhaust ports would be a helpful clue.

 

[gpguy]

gp motor

1977 gp had 5 motor options...5th letter of vin# y=301 p=350pontiac r=350chevy z=400pontiac k=403olds(california models high emisssions) cleaning up gm parts last of big ones 77