I am running a stock 90 TPI intake and am working on the VE table and it asks for the runner diameter and length, if I recall correctly the diameter is 1.47 but what would I use for the length?

Thanks

 

For a stock TPI system including the heads, use 23.375 inches. This is the length from the plenum to the valve seat.

If you want just the manifold and runner length, the manifold is 8 inches and the runners are 11.250 for a total of 19.250 inches.

Either of those measurements will get you close with the GenVII system.

Have fun with it. It will amaze you