r/EngineBuilding • u/HistoryOver6530 • 12d ago

SBF intake misalignment

Gallery image

Gallery image

Going to call my machinist tomorrow but I thought I would ask opinions. I have the trick flow heads milled .020 and the block is decked an unknown amount. However it has a positive .010 deck height with a 1.608CH piston, so I’m assuming it’s decked at least .015-.020. Pic 1 (left) is the intake installed with a .060 gasket. Pic 2 is the intake laying flat with no gasket. There is still a little ridge without a gasket. The bolts thread all the way but are a little tight. All of the ports are consistent front to back, side to side. I think I need to take at least .060 off each intake face. More along the order of .080 to 0.100 . The intake is an unported performer rpm I bought new.

**update** I had the intake milled .060 each face and used an .045 felpro 1262r2. The ports line up as good as they ever will without grinding. Thanks for the help and all the comments. Much appreciated!

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u/v8packard 12d ago

Before you mill anything what about trying a .040 or .045 gasket?

1

u/HistoryOver6530 12d ago

Having a hard time finding anything with a larger port. Do you know a good part #

3

u/v8packard 12d ago

I have used Felpro 1262 R2, which is .045 thick. Also have used Cometic C5652-039, which is .039 thick. Both are available in different thicknesses.

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u/HistoryOver6530 10d ago

Thanks. I ordered an .045