Can anyone give me an honest power estimate on a 250 build.... I’m having the worst time trying to decide which engine to use in place of my blown (up) 250.
Full built 250 head, lumps, 1.94/1.60 ss valves, porting and blown blend.
Forged Ross pistons 9.4:1
Forged Manley 6” rods
Medium turbo cam
Offy intake
292 exhaust
GT35 turbo 15-18 psi?
Air to air ic
Happy to use an alky injection unit.
I understand this combo will not net 800HP or anything near! But, what could I expect?
I have a BMW M50B25 available... needs a good head gasket and studs to boost. It won’t be a monster, but decent.
Seriously considering the 4200... but it looks to be near as expensive as a 2JZ... which is far superior.
1JZ is cheaper and still very capable (probably equal to the 4200 for power output once both are built). It would fit my engine bay easier.
Meanwhile, the 250 is quite reasonable to build and I’m already set up for it.
Perhaps the move is the build the 250 and work on whichever other engine over time.
Truly, I’m awful at making decisions! But, once my mind is made up, nothing changes it!
