305 ( 1 pcv ) or 350 ( 2 pcv's) ????
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Joined: Sep 2004
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From: PITTSBURGH, PA
Car: 85 IROC-Z Z-28, BLUE & SILVER
Engine: 5.7L & 5.0L
Transmission: 700R4
Axle/Gears: FACTORY
305 ( 1 pcv ) or 350 ( 2 pcv's) ????
i read somewhere over the weekend that u can tell the difference between a 305 and 350 cuz a 305 has '1' pcv on one valve cover and a 350 has a pcv on each valve cover..??? is this true and a way of telling the difference??? 
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
No, that's crap, just like all of the other "differences". The only way to tell the difference is to look at the casting numbers, or take it apart and measure the bore.
Thread Starter
Senior Member
Joined: Sep 2004
Posts: 952
Likes: 6
From: PITTSBURGH, PA
Car: 85 IROC-Z Z-28, BLUE & SILVER
Engine: 5.7L & 5.0L
Transmission: 700R4
Axle/Gears: FACTORY
ok, just wanted some other advice, ill try and scan the article and post it tonight or tomorrow.....
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