|
Re: olds 307
If you want to keep the 307, it can be made to perform nicely. Of course there is no replacement for displacement, but if you're on a budget, 350 hp is a breeze. Make sure the 307 you choose is the later roller cam engine
5A heads, pocket porting
Edelbrock intake
Ditch the electronic Qjet and get an earlier one, recalibrated
Lunati roller cam (consult them for specifics)
headers
There is nothing particularly crippling about the 307 other than its displacement, but the other advice here is excellent as well. The 403 has a monster bore with a modest stroke all with the same external size. The Olds family doesn't really have typical big block/small block orientation. The Big blocks like the 400/455 have a taller deck height and different size mains compared to the small block cousins.
Big blocks will fit, but you'll have to do some minor surgery on the valve covers to clear the brake booster, and you'll have trouble getting headers to fit.
__________________
Dragging people kicking and screaming into the enlightenment.
|