Picked these up from another member a while back ago. I took them to Dave Mackie and his shop cleaned them up. Plans are changing and these are just sitting on a shelf.

To be clear, Mackie did NOT do any port work to the heads, they only did a valve job and decking. Intake ports were ported when I got them, can't remember who did the work.

When I got the heads the chambers were opened up quite a bit, not sure why. Mackie decked the heads to bring them back to around stock size. They also did competition valve job, with all new black diamond valves and k-line steel grip guides. I also had him install a titanium collar .600 lift spring kit.

Here are the stats on the heads:
- 88.6cc chamber size
- Valve to valve clearance: .266 and .265
- 1.610 exhaust valves
- 1.900 Intake valves

Only intakes are ported, exhaust side was left alone. Heads are setup for ACR. Minor damage to fin (see pics) and needs new exhaust studs. Looking for $650obo.

Invoice:


Rear head intake


Rear head chamber


Rear head valves


Front head valves


Front head chamber


Front head fin damage