Heads ?
spend $50 at a machine shop and have them milled for more compression. might look into a basic valve job too.
you could see some nice gains for cheap
These heads came off a motor with less than 5000 miles on it. Heads are bare. Set up for 2.00/1.55 valves. 65 cc chambers (according to the internet, I haven't measured). D-shaped exhaust ports. Supposed to be identical to the 243 casting LS6 heads
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