[Redog]

Trust us, it's not worth it.

Getting performance parts for an 85 and newer 307 is next to impossible. The aftermarket intake manifolds will NOT port match those 7a heads with the 0142 casting number. The carb and dis are both CPU contorled and those 7a heads have those A.I.R. tubes on them that rust to be broken and all the other 1980's emissions crap that sukced the life outta a motor. Lets not forget the exhaust manifolds from 86 and up, they are so small it's just not worth it.

The 307 in the 442's was as far as these motors could go, A whopping 180 hp

I had a 307 in the Delta, now I have a 350. Performance numbers on the 2

1985 307
140 hp 255 ft lbs
put down 90 hp
car weighed 3990
1/4 mile time 20.60

1968 350
255 hp 355 ft lbs (stock in 1968)
car puts down around 207 hp
car weighs 4207
1/4 mile time 15.51