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Old 01-10-2011, 07:28 PM   #1
small block kid
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72 Chevelle 350

Recently got a 72 chevelle malibu with a 350 small block. ive been looking for the power output but i cant find anything that gives me a definative answer. im also woundering what possible upgrades i can do to the engine for a little more power. im pretty sure i will put a 4 barrel carb on it and possible some new headers but not sure what brands are good. so any and all help will be greatly appreciated
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Old 01-11-2011, 09:54 AM   #2
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Re: 72 Chevelle 350

Nice find! '72s are getting rare.

A 350 is a small block. No need to repeat.

Adding a 4-bbl. will not help unless you also change the camshaft to take advantage of the increase in fuel/air. We've done this for people in the past, only to have the car perform "worse". The '72 engine is "low" compression, so a Comp XE grind is ideal. For a stock converter, XE256H or XE262H are called for, the latter being a bit more "rowdy" (not too much, though). For anything over 228 degrees @ .050" lift, a "stall converter" is called for.

If not doing extensive modifications to the engine, the 1 1/2" headers are the better choice. They will enhance low-speed and mid-range power. No need for "expensive" headers at this point. Edelbrock "Performer" is the perfect compliment to them. NOT "RPM". "Air Gap" is okay, but a waste at this level. A small Edelbrock or Rochester carb (650 CFM) is also the best choice here.

Always remember: "Just as good only cheaper" and "get away with" are two terms to be purged from your vocabulary regarding the old car and engine modifications. The first is VERY seldom true, and the second is dangerous.

Jim
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Old 06-27-2011, 02:38 PM   #3
Tony Silva
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Re: 72 Chevelle 350

Headers are a good choice, Some things to consider when buying a set of headers is #1 the price of having the original exhaust pipes modified #2 is Don't get a set of headers that are super close to the engine block because changing spark plugs could be difficult #3 don't bother spending the money on ceramic coated headers....it's just not worth it. And #4 long tube "full Length headers' with the collectors down near the transmission have a tendancy to get damaged on speed bumps and things like that.
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Old 10-11-2019, 05:19 PM   #4
NateSena12
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Re: 72 Chevelle 350

i have a 1970, its a 340 big block and has over 700 horsepower, on a 4 speed manual trans and it was my grandfathers. unfortunetly i did not get to finish restoring the car before he passed away. but the car runs on all 8 and has a beautiful red paint with black racing stripes.
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Old 10-11-2019, 09:11 PM   #5
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Re: 72 Chevelle 350

Welcome to the forum. Gotta ask , what is a 340 big block?
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