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Author Topic:   Cylinder Heads
posted April 30, 2004 11:33 AM
Higher compression and better flow charteristics.
You will need different pushrods, intake, and will need to have the pistons valve pockets fly cut if possable if not you will need new pistons.

posted May 02, 2004 12:07 AM
I don't trust anything 'straight out of the box'. At least have a good shop double check spring installed heights, retainer-guide clearance and valvejob runout/quality.

If your old heads were machined or setup perfectly, it would really suck to get a .005" runout valve job and coilbind with the new ones.

All things equal, an 18 degree head will make a significant HP improvement.

posted May 03, 2004 11:17 AM
If you do send those to a head shop you should probably send them to Joe Patelle at High Velocity Heads in Knoxville,Tn. I'm pretty sure he designed them (at least he designs all their intakes), and certainly can squeeze some more HP.

posted May 03, 2004 11:28 AM
Thanks for the responses.
I am aware of the addtional parts and also would have everything checked out before bolting them on an engine. What I wanted to find out was the HP gain over the existing combination. The "out of the box" reference was more related to "factory" port work. I was weighing the "M2" version and am trying to do this on a budjet. Thanks again for your responses.

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