you mean a stock 351w? Well anyway i was comparing the prices and actually either way i got it will cost me about the same im basically starting from scratch ne way. No heads intake etc etc.. if you were refering to a 351w i believe you need this little list of stuff here which is stuff i was gonna replace anyway....
The 351 block and a 302 block are of very similar cast. Which means all trannys will interchange. Heads, timing chain, timing cover, water pump, accessories and internals like cam and lifters will also fit. Below is a checklist of things that you will need to do to make the 351 swap into your Fox body 302 Mustang.
1) You will need a new oil pan and pick up tube.
2) The Flywheel and Harmonic balancer are balanced to 28oz. instead of 50oz. like on late model 302's. You will need to obtain a 28oz. flywheel and balancer.
3) The lifter valley on a 351 is wider. This means you will have to change your intake setup. If you have a Cobra intake or a TFS intake now, both companies sell just a lower intake for the 351 to match the upper intake you already have.
4) If you want to keep your A/C and power steering you will need a new accessory bracket for the 351.
5) The 351 will also sit a little higher than the 302 in which 302 headers will not reach the H-pipe. Many companies sell 351 swap headers for this application. I prefer the BBK ones
6) Clearance off the stock hood with the 351 sitting higher will be a 50-50 thing. I have seen a 351 sit underneath a stock hood before. Most of you will need a cowl hood to fit if your motor mounts are fairly new and still very stiff. If they are old I do suggest new ones.
7) The distributor is also different from a 351 to a 302. You can obtain one from a 5.8 FI truck (if you are keeping FI).
8) A spacer will also be needed for the crank pulley for proper alignment of the belts. FMS sells this crank spacer
so far that seems about right....
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