mfg Posted August 24, 2014 Report Posted August 24, 2014 With a quick glance, what 'dead giveaway' will differentiate an early Avanti '327' GM engine from the later '350' version? (Both engines with plain rocker covers..NO decals!)
brad Posted August 25, 2014 Report Posted August 25, 2014 Oil filler on the valve covers instead of tube pressed into intake manifold
Gunslinger Posted August 25, 2014 Report Posted August 25, 2014 The early 327 would had the oil filler pipe at the front of the intake manifold and no caps or PCV in the valve covers.
mfg Posted August 25, 2014 Author Report Posted August 25, 2014 Great answers!......But there's one more very important and quite obvious item.....In plain sight!
brad Posted August 25, 2014 Report Posted August 25, 2014 later ones would have the Rochester quadrajet as opposed to the AFB.
mfg Posted August 26, 2014 Author Report Posted August 26, 2014 later ones would have the Rochester quadrajet as opposed to the AFB. OK....but that's really not it..(Hint...This is actually a part of the engine...not an accessory like a carb or alternator or starter.)
bigdaddy Posted August 26, 2014 Report Posted August 26, 2014 The vibration damper on a 327 is thinner than a 350. Also there is not a bolt in the center to hold it on.
mfg Posted August 26, 2014 Author Report Posted August 26, 2014 The vibration damper on a 327 is thinner than a 350. Also there is not a bolt in the center to hold it on. Wow...another difference.....good info, but still not 'IT'!
bigdaddy Posted August 26, 2014 Report Posted August 26, 2014 (edited) OK! Let's try this one. Early 327 (#461/#462) heads have No accessary holes in the front of the heads. Edited August 26, 2014 by bigdaddy
mfg Posted August 26, 2014 Author Report Posted August 26, 2014 OK! Let's try this one. Early 327 (#461/#462) heads have No accessary holes in the front of the heads. ALL GREAT INFO GUYS!.....but you still haven't hit on a very obvious part (If it's there)
mfg Posted August 28, 2014 Author Report Posted August 28, 2014 AND THE MYSTERY PART IS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!................A road draft tube!
Avanti83 Posted August 29, 2014 Report Posted August 29, 2014 AND THE MYSTERY PART IS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!................A road draft tube! I think we are going to differ on what is "dead obvious at a quick glance" on this one on an installed engine.
mfg Posted August 30, 2014 Author Report Posted August 30, 2014 I think we are going to differ on what is "dead obvious at a quick glance" on this one on an installed engine. If one looks for the presence of a road draft tube as a quick indicator of an early small block Chevy,.....I'd really have to say it's quite obvious (IMHO)
bigdaddy Posted August 31, 2014 Report Posted August 31, 2014 (edited) If one looks for the presence of a road draft tube as a quick indicator of an early small block Chevy,.....I'd really have to say it's quite obvious (IMHO) "Unless" the tube and baffle under the intake manifold were removed and Pcv system was installed. Fairly common practice. Edited August 31, 2014 by bigdaddy
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