Thread: Which heads are good, which are junk

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Ok guys, I need some help. I have 7 sets of heads and I need to know which ones are good and which are not.

3998993 307/350 75cc 1.94"i
3973487 350 75cc 1.94"i
10110810 350 65cc 1.94"i center bolt
354434 305 62cc 1.75"i
14102187 305 58cc 1.82"i center bolt
333882 400 76cc 1.75"i
462624 350/400 76cc 1.75"i

I have 2 projects:
1. stock race car 400, stock intake, stock exhaust, mid range performance cam, stock qjet 4bbl
2. mild street performance 355for '65 Studebaker, flat top pistons, holley 750cfm vac. sec, street perf intake, headers?, mild performance cam. I don't want to use center bolt heads on this one to keep it true to the year of the car.

I'm thinking the 14102187 for the race car for better compression from smaller chamber, decent sized valves.

Which heads can be ground to fit 2.02" intake valve?

Originally posted by dcoffield
Ok guys, I need some help. I have 7 sets of heads and I need to know which ones are good and which are not.

3998993 307/350 75cc 1.94"i
3973487 350 75cc 1.94"i
10110810 350 65cc 1.94"i center bolt
354434 305 62cc 1.75"i
14102187 305 58cc 1.82"i center bolt
333882 400 76cc 1.75"i
462624 350/400 76cc 1.75"i

I have 2 projects:
1. stock race car 400, stock intake, stock exhaust, mid range performance cam, stock qjet 4bbl
2. mild street performance 355for '65 Studebaker, flat top pistons, holley 750cfm vac. sec, street perf intake, headers?, mild performance cam. I don't want to use center bolt heads on this one to keep it true to the year of the car.

I'm thinking the 14102187 for the race car for better compression from smaller chamber, decent sized valves.

Which heads can be ground to fit 2.02" intake valve?

I would use the 993 and install the larger valves in them for the race car.The problem with useing the 187 heads are the small chambers actually (shroud) the intake valves limiting valve flow.I you want to lower the compression your cam either (mill) your heads or deck your block.I would never use any 400 heads that have the steam holes drilled in them.They are much more prone to cracks.I like the 993's or the 441's if you can find them.The 487's will work fine for the street car.