Originally Posted by 77pontolds
Wow! You folks were right. The 400 Pontiac makes my Firebird haul 555. It makes me want to put casters on the rear. It is quite a difference from the Olds 403. Now I have to be careful when I nail it, cause when it shifts into second gear, it wants to go sideways. Fun!!!
Good deal! Must be running good- the Olds 403 usually is no slouch up to at least 4500 or so (stock). Stay safe out there and enjoy.