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fasted1500 May 20th, 06, 9:20 AM I have a 72 Malibu with a 307. I was wondering if the heads on the 307 and a 350 are the same? I want to install headers on the 307 until i am able to buy a 350. When I get a 350 I want to make sure the headers will fit that motor as well. Thanks Fast Ed Sparke60 May 20th, 06, 9:49 AM No problem on the header fit. Mike fasted1500 May 20th, 06, 9:50 AM Thanks! Cam May 20th, 06, 10:57 PM The headers will fit, but FWIW the 307 used 1.72" intake & 1.50 exhaust valves, the Chevelle 350s used 1.94" intake valves. The heads with the 1.94" intake valves will fit a 307 no problem. cobra2411 May 21st, 06, 12:40 AM You can also install a 4 barrel intake too. Then you can swap that over to the 350 too... David | ||