What are Chevy 041 heads?

The “041” head was a 1969-1970 high performance head, with the same exact performance characteristics as both the “186” and “187” Camel (double) Hump heads. It also is a 64 cc combustion chamber. It was available from the factor with both 1.94/1.5 and 2.02/1.6 valves, just depended upon which vehicle GM put them in.

What CFM do Vortec heads flow?

230-cfm
He took a set of Vortec right out of the box and clamped them down to his Superflow bench. With 230-cfm max flow, these heads are actually pretty good, except when you notice that peak flow is at . 700 inch valve lift, and no street cams are that big.

Are 487 Chevy heads good?

The 487 heads are quite decent for what they are. They are the best of the smog heads. They were used on the LT-1’s in the early ’70s. They have good inlet ports and are basically identical to the fuellie heads except that they have 76 CC chambers for less compression.

What kind of engine does a 041 have?

Beware that the 041’s were leaded gasoline era heads and need hardened seats installed to survive street abuse long term. 041’s are a 1.94/1.50″ valve 64cc head from the 1969 295hp 350 and the 1970 300hp 350,, same engine as none of the actual specs changed. The heads are better than low power crate engine heads.

Where do I find cylinder head flow numbers?

All flow numbers for CHW — Cylinder Head Worksheads come from them Web Siteupdated April ’10. All flow numbers for CNC Heads UKcome from their Web Site. Updated July ’10 — and were converted from 10″ to 28″. Most flow numbers for DARTheads were from DART or their Web Siteupdated Aug. ’12.

Which is better a 350 or a 041 head?

041’s are a 1.94/1.50″ valve 64cc head from the 1969 295hp 350 and the 1970 300hp 350,, same engine as none of the actual specs changed. The heads are better than low power crate engine heads. When using 64cc heads,,,, Flat top 327 is about 9.5:1 compression. Flat top 350 is about 10:1.

What’s the casting number on a Chevy Vortec?

Casting number 12558062 is a Vortec head that is available from Chevrolet Performance. It is completely assembled with 1.94/1.50-inch valves, and 64 cc combustion chambers. It can be machined for 2.20/1.60-inch valves.