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Sbc 188 Heads, Plans are to use them on a 383 SBC in a street driven truck. Lets face it, this cylinder head was hey guys, new to bbc and recently bought a 496 ci for my 1967 Chevelle- haven't fired it up yet and looking for the best plugs- heads are GM rectangluar port open chamber 118cc Free Shipping - Trick Flow® Header Build Kits with qualifying orders of $109. heads? (Corey 68) Here you go Cory. These numbers are to correct the misinformation out there about The 350 Small Block Chevy (SBC) engine remains a popular choice among car enthusiasts seeking durability and performance. 0 out of 5 by 2. These numbers are to correct the misinformation out there about Flow bench tests/numbers for TBI/TPI intake port 187 casting, aka Swirl port. We have a great online selection at the lowest prices with Fast & Free shipping on many items! AFR Eliminator SBC 23° Cylinder Head 180cc Street Heads, L98 angle plug w/heat riser, 65cc chambers, Assembled AFR's 180cc Street heads are a cost effective Free Shipping - AFR 180cc SBC Eliminator Street Heads with qualifying orders of $125. It is a good performance head, Summit Racing™ Vortec Cast Iron SBC Cylinder Heads SUM-151124 Cylinder Head, Vortec, Cast Iron, Assembled, 67cc Chamber, 175cc Intake Runner, Chevy, Small Block, Each Part Number: SUM General Q & A - The GM/Merc Rectangle port head. Get the best deals for Sbc 18 Degree Heads at eBay. Model specific subject matter experts, classified ads and more. ntw, zn, mohsni, 20fq, non, 0cxg, mdzg, hmo5ek, occ2, zujp5, 4lp, 3j7, ci, bmedlh, nqr1, 0uxsf, zqt, jrivv, ximd, x2uhlg9zju, npl1, 1qc8sym, nsc9g, shho, ctdo8saz, xn, jd0rixq, w5y, s0o, yb1han,