jimjamm65 wrote:what is the formula for milling the sides of a big block chevy intake manifold please.
SchmidtMotorWorks wrote:Here is the same model but adjusted for a 10 degree intake face like a gen-1 SBC
In this case to correct a 0.100 mismatch you remove 0.143 from each face, the manifold will drop 0.174
SchmidtMotorWorks wrote:I just make a parametric sketch, that way I avoid any possible mistakes in how I apply the trig triangles.
The CAD app just returns the values.
Intuitiveley 0.143 does seem high, I can double check it, in a couple of hours when I get back to the computer I did that on..
The trig way.
The intake face on a SBC is 35 degrees from horizontal
Tangent(35) = 0.7002 (opposite/adjacent)
1/0.7002 = 1.428
The mismatch is 0.1" so proportionally the correction is 0.1428 (rounds to 0.143)