sadisticsavage said:
Ok... Spent all day looking. Im not sure Im spelling it wrong or what. Where do I find these W-Z manifolds? And also this guy Im buying the 455/400 set up from also has a 350/350 set up as well. Would I be better off with that setup to start with? And would there be a huge difference in power between the 2? Because there is alot more offered for the Olds 350 in the Cutlass. The only road blocks that are keeping from getting the 455 just yet is the cooler lines fpr the transmission and the radiator. Then the manifolds. So Im stumped haha. Sure sucks. You guys are doing amazing with the info btw. Thank you all ssoo much.
http://www.ebay.com/itm/Oldsmobile-Cutl ... 5f&vxp=mtr
Those are the brand new ones. Looks like the price went up a little, they are now $275.
Honestly which one is better depends on the motor itself. If you plan on just freshening it up and dropping it in, you want a pre-1971 engine. The compression dropped in 1972, along with all the smog regulations which meant much lower HP ratings. If you plan on a ground-up build, go with a 455. You can start with almost any year block, and build it with the best parts. For example my next 455 build will use a 1975 block, heavily worked 1968 C heads, Eagle crank and rods, forged pistons, J&S Machine 5-main halo girdle, etc, etc. There are just as many perfomance parts for 455's as 350's, so its really personal preference, although 455 parts are traditionally more expensive.
I'm partial to 455's, but I've seen some pretty mean Olds 350's also. I've seen people hit high 11's in a full trim street car with 350's, a lot of work, but it can be done none-the-less, any 350 up until 1976 will have a solid main web block. You may also look at 403's, which can make a pretty stout street motor, the weak bottom end of these motors (windowed main webs) can be somewhat remedied with a halo girdle. Worked right, you can easily get 450HP+ out of these motors.
But seriously thank you so much for your help. G-body warriors!!!
