I am looking to CNC machine a 4barrel throttle body for a custom injection setup I am making. I would like to make it to the same dimensions as a holley 4150. So I can use holley throttle shafts, butterflies, throttle linkage, kickdown cable, all that stuff
Does anyone have a blueprint or has anyone measured one?
Im trying to avoid taking mine off because I will need the car to get home and If I spill gas all over the measuring equiptment boss man will be pissed.

 

I think I have an AutoCAD drawing of that adapter. I'll see if I can find it.

 

Well, I found one for a 4160, but not a 4150. I think the bore sizes are different. I can send an AutoCAD *.dwg file if you can use it. It looks like this:

 

That will work. Thanks a lot you just saved me a lot of trouble!!

 

Like I said, I've got it dimensioned on AutoCAD if it would help.

 

I dont need the autocad. I really just needed the distances between the bores and the bolt holes, so that drawing was enough.
squared up the block of aluminum earlier and Im going to feed that to the machine and start cutting in about 7hours from now when I wake up.
If all goes well I will probably save $500-600 of the cost of the holley MPFI. I cant believe how much they want for those things! Its a block of metal with holes in it! How is that more expensive than a carb of equal or bigger size when the carb has a few hundred more moving parts. Perhaps its because its :hail: $C$N$C:hail: machined. ha ha ha