Im looking to build a mustang, i want to start with a clean shell.. not in the market just yet have to sell the s-10 first. However has anyone done this, or is it even worth it, to run a 351 windsor engine, worked up, good pistons, cam, whole nine yards and run the 302 H.O. injection on it with upgraded injectors, fuel rail, pump and so on. Thus keeping the same wiring harness computer etc? Im a chevy man and i know 305 to 350 swaps are common, and the horsepower and torque gains are huge, but can the same swap be done, 302 to 351... any imput would be useful, and if there's a sticky on this or maybe a website with an answer that anyone knows that would be helpful too. thanks.

 

Yes, you just need to keep the injectors and mass air matched. A nice dyno tune will help after that, as you will want to get past the programmed rev limiter.

Also, you won't be able to use the stock intake, as a 302 block has a 8.2 deck height and the 351 Windsor has a 9.5. In theory, you could use a stock upper, but there isn't a lower that will fit that specific runner pattern.... that I know of.

 

thanks, exactly what i wanted to know...

 

You can either use a GT-40 351W lower and a car (302) Gt-40 upper, or buy an aftermarket upper and lower.

 

i recommend buying a aftermarket upper such as a holley systemax, or TFS R

 

whats the round about price on those new and used? Im really hell bent on running the 351 i think it would be a hard runner, with a good cam, headers and proper amount of fuel. They did it with the cobra r's in 1995. How were those??

 

they had a double cowl hood, and i think a specific upper intake.

 

were they that much faster than a gt? or was it just a difference between a 305 and 350 camaro in the 90s

 

Figure the difference to be just the cubic inch gains. If you get 1 hp per cubic inch, then you would be 49hp/cubic inches ahead of the next guy. It really depends on the final compression of your new pistons and new heads. You will also need to buy 351 specific headers to fit the fox body, because of the higher deck height. However, if you step-up to a 351w now, you will be set to run a nice 408 stroker down the road.

Also you can get the cheaper 351 Thypoon style intakes for like $350 off ebay and up to $650 for a TFS or Eldebrock.

 

If you want answers on a 351 in a mustang get in touch with Mark at Just Racin, he's done a bunch of these. He's honest and will answer questions. HE MIGHT NOT TELL YOU WHAT YOU WANT TO HEAR BUT HE KNOWS WHAT WORKS AND WHAT DOSENT. HE HAS SAVED ME A BUNCH OF MONEY I WOULD HAVE WASTED. I've known him about ten years. 813-982-9123. The 351 is a kick ass swap. Ford has almost everything you will need, even pully brackets so all the orginal 5.0 accessories transfer right over. I think you'll need to widen the crossovers on the stock fuel rails, the 351 intake is wider. It wont be painless, but you can make it come out looking like it came in the car. Good luck.