Stage 1 Cylinder Head Conversion |
Basic Stage 1 Conversion Labor charges Thermal cleaning 54.00 Magnaflux 35.00 Replace guides 144.00 Stage 1 PLUS conversion. 240.00 *open for oversize valves *un-shroud combustion chambers 3-angle performance valve job 175.00 resurface heads 75.00 Total labor 723.00 Parts cast spiral groove valve guides 28.80 T/A valves 225.00 2.125 intake 1.750 exhaust stainless steel - swirl polished *Viton valve stem seals 14.85 Stage 1 plus valve springs 115.00 Total parts 383.65 Total Parts and Labor $1106.65 |
Opening for oversize valve Before un-shrouding un-shrouding process after un-shrouding |
Option list 30,000 series unleaded exhaust valve seats (installed) -------------------------------------176.80 Dual valve springs (includes cut spring pads and hardened shims and set installed height)------241.35 includes cut spring pads and hardened shims and set installed height Phosphorus bronze guides installed and wet honed -------------------------------------------76.20 Competition Multi-angle valve job (must do with port work)---------------------------------- 70.00 Plug four exhaust crossover holes ------------------------------------------------------—------- 60.00 Plug eight A.I.R. holes in late heads -------------------------------------------------------------- 40.00 Back-cut intake valves (most economical H.P. gain, must do with port work)-------—---- 24.00 Street-Strip Port, flow test ( int. flow min. 250 cfm @ .450 lift) -----------—----------- 700.00 Competition port, polish, flow test and balance —————————-----—-—- from 1000.00 minimum 275 cfm intake 190 exhaust Core charge ------------------------------------------------------------------------------100.00 and up Milling heads to reduce cc's requires cutting the intake side of the head so the intake manifold will align. Including checking cc's it is $20.00 per cc to cut both heads and intake side PLUS FLOW PREMIUM CONVERSION includes first four options ———————-$1631.00 with competition valve job and street/strip port and flow ————————-——- $2331.00 All port work verified with on our computerized SUPER-FLOW SF 600 flow bench with the Brezinski slider system which correctly aligns head over bore for more exacting measurements Although it is costlier, we can now get 290 + CFM on the intake and almost 200 CFM on the exhaust. Don’t be fooled by some wild claims, we have tested most of the products ported by other so-called Buick experts and their flow numbers just do not come up to what they claim. ~~~~~~~~~~ Prices as of January 2013 ~~~~~~~~~~ |
All of our ported heads are verified with our computerized Super Flow SF-600 flow bench. All runners are checked and a complete flow sheet comes with all heads |
Heads awaiting conversions and porting |