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Old 11-21-2004, 08:45 PM
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305 into 283?

i have an early 283 in a truck. i have the heads off already and i have some empty 305 heads(no valves).

will the valves go in the 305 heads?
and will they work on the engine?

it has flat top pistons with 4 valve relief.
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Old 11-21-2004, 09:31 PM
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the 305 heads are probably 1.86 or 1.94 intake valves. The 283 is probably equiped with smaller 1.74s?.

You can bring your casting #s and that would really really help...but a short answer is: The heads will work but the valves(9/10) will not swap.
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Old 11-22-2004, 01:40 AM
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Try them & see. Standard 305's had 1.75" valves, the HO's had 1.84's, & none that I know of had 1.94's.
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