1970 -81 Pontiac Engine Tuneup Chart 2nd Gen Firebird Chevy V8 And Olds 403 Included

[B&R Racing]

 

[B&R Racing]

Will apply also to A-body, B-body, and X-body with similar engines.
SD455 only used in Formula Firebird and Trans Am 1973-74.
RAIV only used Firebird Trans Am 1970 and GTO.

 

[B&R Racing]

http://pontiacformula.free.fr/en/allumage.php

 

[Grumpy]

that 403 olds, engine
had consistent lower end problems
with cracked mains common

 

[B&R Racing]

that 403 olds, engine
had consistent lower end problems
with cracked mains common

Hit or miss on them my experience 403 Olds. Still have one I used in the Gp years back.
It was a good one.
On the list to save rebuild again someday.
Mains are Windowed Yes.
Learned the Perfect Tune is everything for Longevity starts with the Fuel system layout.
Just terrible I think stock GM.
RACE CAR PLUMBING FOR THE STREET
Sensible power band without best parts used all True 100% USA.