Holley 4412 on a stock 2300 intake.

Indian

Veteran
What intake adapter do I need to make it work? Also does anyone know who sells the return spring brackets?
 

Indian

Veteran
The thing is per Black rock rules it states we can use a 4412 holley. However it also states no spacer what so ever may be used, and no machining to original carberated intake(no EFI intake may be used). To use a 4412 you ether have to use a "1" adapter/spacer" or machine the inner runners for the stock 4412 butter flys to clear. I know for a fact people are using the 4412 option, so what gives is my question.
 

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