Re: Blueprint 383 + Pro Flow 4
Either it has 4 bolts per side of intake or it has 6. That's all you need to know. If like is said above you have both sets of bolt holes, run whatever intake you want.
As for headers, vortec and standard are the exact same thing. They never changed exhaust bolt patters or port locations.
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-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle.
-98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes.
-02 Suburban 4x4: leveled front
-CBR600F4i, CBR600RR, CBR1000RR, and standup skis
DISCLAIMER: I cant spell for the life of me.
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