ok i am getting ready to get my new y pipe made i got my hooker comp headers on (shorties) and i know that hte collecter gaskets that fit are three inch. my question is the guy said that he could make a 3" y pipe but if my collector is 3" then how will this bolt up? will i need a reducer or not? also should i just have the y pipe made long enough to take the place of the cat? i want to get this done soon i am soooo sick of driving around with open headers to damn loud!!!!

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1988 firebird formula350tpi msd 6al box blaster 3 coil accel 8.8 wires flowmaster cat back pro shift light a pillar gauge pod and water temp and air/fuel ratio gauges b&m mega console shifter, march underdrive pullies, tpis airfoil
best 1/4 mile run of 14.44@ 96.53

 

can anyone help me here?? also i have accel 8.8 wires right now are these still going to work since they are made for my stock manifolds? i hope so cause these wires were not cheap!! thanks for the help.

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1988 firebird formula350tpi msd 6al box blaster 3 coil accel 8.8 wires flowmaster cat back pro shift light a pillar gauge pod and water temp and air/fuel ratio gauges b&m mega console shifter, march underdrive pullies, tpis airfoil
best 1/4 mile run of 14.44@ 96.53

 

DESPERATION CRY FOR HELP!!!

 

No you will not need a reducer and yes it can be made to replace the cat. One question though. Why do you need a 3in y-pipe when a 2.5in one that changes to a 3in. at the point the pipes meet would probably be more than suficient and easier to make?

 

umm i really dont knwo why the guy at the shop just said that he would make me a 3 inch y pipe so what size reducers do i need?

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1988 firebird formula350tpi msd 6al box blaster 3 coil accel 8.8 wires flowmaster cat back pro shift light a pillar gauge pod and water temp and air/fuel ratio gauges b&m mega console shifter, march underdrive pullies, tpis airfoil
best 1/4 mile run of 14.44@ 96.53