• The 6-port non-turbo engines (made from ’84-’92) are a totally different story for porting. The front and rear side housings have the auxiliary ports in them, and the center housing has very small ports. Additionally, there is not a lot of casting thickness behind the upper part of the center port. This means if you […]

  • Bridge porting just requires a LOT more grinding than street porting. We do the initial cut for the extra port on the mill, but it can be done with a hand drill. You just need enough to get the rotary files in there and start grinding. These sample images are of a “J Bridge”. As […]

  • If you have an 86-92 non-turbo engine, please refer to our: Porting 6-Port Exhaust (why not to) FAQ    Exhaust Templates are available in our Tools Section. They come with the actual port shape scribed on them. You have to cut/grind the port into the template, following the scribed lines.    These are two examples of […]

  • Intake Templates are available in our Tools Section. They come with the actual port shape scribed on them. You have to cut/grind the port into the template, following the scribed lines. The one pictured is for bridgeport intake. These are various intake templates we use in our porting. We prefer using Dykem Layout Fluid to allow […]

  • The 86-92 non-turbo rotor housings have a “splitter” (also called a “diffuser”) in the middle of the exhaust port. These are part of the casting of the sleeve insert, and are VERY hard metal. We do not do any porting on these rotor housings! If we are assembling a “ported” 86-92 6-port engine, we use […]

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