So here's a question:
Could an individual with oodles of time and common porting knowledge (and some fanaticism) end up with their own home made "thumpers" or are these CNC/computerized machined and out of reach for the home-porter to replicate functionalitywise?
And on that note:
Does the lower valveguide _ABSOLUTELY_ need to be there for 0-5000 rpm applications? I was thinking to just smooth the entire runner down and take all guides/bumps out altogether and have a smooth tube all the way in and out and then HOG out the intake and exhaust ports till it's glass smooth. Am I begging for disaster without guides or should I be ok?
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91 GT Carb conversion, holley 600 double pumper, edelbrock performer intake, FMS "C" drop springs, march 1000 underdrive pullies, crane 1.7 roller rockers, GT-40P headers, bassani x pipe, american thunder catback, FMS 4.56's, msd aL6, trunkmount battery, A/C eliminator kit, 3000 stall tci streetfighter, AOD with transgo kit, A+ servo, 300M hardened lockup shaft, kevlar bands and 28,000 gvw trans cooler, 3 core radiator, 300 lbs stripped with a full interior
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