Speed Master Oldsmobile Aluminum Cylinder Head Review

[@gregbenwell6173]

BUT what are the valve sizes?????????? Oldsmobile used 2.07 inch Intake valves and exhaust was around 1.64 inch if I recall correctly!!! This meant Oldsmobiles had amazing flow!!!

[@gordocarbo]

He says the measurements. Intake is 2.07

[@quentinmartin4834]

He also measures the exhaust at 1.68

[@johnplato4976]

Even for a bored and or stroked 455, a 2.07 int. & 1.625 is not enough for serious power production. Considering Pontiac Ram Air valve sizes 2.11/ 1.77 could out flow the Olds BB head dept.

[@brysonp.473]

​@@johnplato4976 Guys going after serious power production don't buy $1200 speedmaster heads. They spend serious money for the good stuff from places like mondello or rocket racing where you can get bigger valves and huge ports. These are just a somewhat decent set of street heads

[@jackwillson8099]

0.006 valve rock lol that junk 0.0013 too 0.0015 max valve guide ,thats a smoker for sure

[@bennoakes2477]

to suit Culatas.......enough said, just crap. It's an alloy casting, at what point is a helicoiled thread not expected?

[@johnnyz1781]

Huh? Helicoil is going to be stronger than aluminum threads, that's why they used it on the high areas with high load. They cheaped out by NOT adding them for the accesory mounts.

[@masonite1973]

Drunk shopping strikes again lol ;)