AmericanMuscle4.6GT

I’m potentially buying a super clean fox hatch back soon. The car has a super mild build (B303, SVE heads, 1.7RR, porter upper and lower GT40) that I think would probably struggle to crack 280whp on a good day.

Im thinking about eventually stroking it to a 347, using a Scat kit ($1k for standard, $2k for the forged kit).

I do not have the ability to do the work myself and would have to have it done by a shop.

What would be the average cost for a shop to pull the motor, do all the machine work, reassemble with the new rotating assembly, and put the motor back in the car?

What else should I upgrade? I think probably just a better cam and maybe having the heads ported. Also a new radiator and electric fan, maybe water pump, etc.

Any chance all of this could be done for under $5k total cost? Would it make more sense to just bolt a vortech to it and call it a day?

TrimDrip

5k is going to be pushing it. you are still going to have to buy a new flywheel, balancer, injectors, possible a fuel pump, tuning software, on top of what you already spoke of.

I think you would be better off to build an engine and drop it in, than tearing apart the good running engine you have. If anything at least have a separate short block ready to go.

It would probably cost close to 2.5k just to have a shop re-ring and re-bearing the engine you have.

On the other hand, say you got in a vortech kit for 2k used. You could probably buy a used maf too. The injectors and fuel pump i would want new. Another $350 for tuning software and a moates quarterhorse. You could easily do that for less than 5k.

drhoward

Doing a supercharger is much easier, and building an engine like that in a stock block seems like a waste since it's only going to be good for 400-500 hp before they become very unreliable.