A cam is not going to do all that much since there is NO aftermarket intake for a 255. The 255 has round intake ports on the heads that are unique You can try porting it, but I really think that you will be wasting time and money, especially when 1 out of 1000 would not know that a 302 was not the orrigional enginekellar86 said:I like having the 255 because there aren't many around but I agree that it is a lump. Would a cam and lifters help liven it up?
I doubt it, and why put a 351M in? they are WIDER than a 351C, HEAVIER than a 351C, and their bellhousing pattern is the same as the 385 family, plus there is only one decent aftermarket intake, and since it is wider, you will have to have your ENTIRE exhaust system custom madekellar86 said:Would those mods make much horsepower? I'd like to atleast double the stock rating of 119. Has anybody swapped a 351M into a Mustang?
I've been looking at cams too and Crane cams are the only ones I have seen for a 255. Do you have any mods done to your motor?goaticimo said:its time to change my cam in my 81 4.2 and was wondering what cams would fit i know crane cam shows that a few 302 cam will fit but does anyone know exactly what cams from which years will fit the stupid thing im having alot of trouble finding one
well i threw on a holly 450 i had kicken around and it gave me a little more juice but wouldnt really recomend that, but what i also did is when my 88 4 banger blew i took the fuel pump and drilled it in my 81 and just put a toggle switch on it to turn it on so it wasnt running the whole time. if i do leave it on it wants to stall and floods all the time but when i flick it at around 5grand i was surprized it actually worked getting a little more fuel into my carb better than the mechanical pump i was thinking about blocking the mechanical pump of and trowing in a nice electric pump in there but its defintetly not worth the money not on that motor anywaykellar86 said:I've been looking at cams too and Crane cams are the only ones I have seen for a 255. Do you have any mods done to your motor?