Anyone have good results from some pocket porting and polishing up the exhaust port?

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'88 RS (originally 2.8)
-350, .040 over, vette alum. L98s, stock tpi.
-305 injectors & chip
-TES headers & edelbrock cat back
-3.73 gears, 700r4.
Best with 2.8-17.4@77mph
Best with 305-15.0@93mph
Best with 356-13.7@101mph
on a 2.050 60 ft.
(Damn the 2.8!)

 

Sorry can't tell you on this one- other than head angle mill I bolted them on. The exhaust ports looked fine out of the box.- I sure thought about some pocket porting, but was getting anxious to step on the go pedal.


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86 406

 

Mine aren't just pocket ported with a polish on the exhaust, but are fully ported with rough polish on the intake and complete buff out polish on the exhaust. They responded very well to the work I did with them.

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N/A 406, TPIS Miniram, 58mm TB, 30lbs injectors, Custom Ground Elgin Cam, Ported TFS heads, SLP 1-3/4", & DFI computer.
11.70@117mph