350 rocket performance suggestions - ClassicOldsmobile.com

Go Back  ClassicOldsmobile.com > Repair & Restoration > Racing and High Performance
350 rocket performance suggestions >

350 rocket performance suggestions

350 rocket performance suggestions

Old February 13th, 2019, 12:48 PM
  #1  
Registered User
Thread Starter
 
Join Date: Jan 2014
Posts: 3
350 rocket performance suggestions

I am in the process of restoring a 1972 cutlass S and would like some suggestions on performance upgrades. I am not interested in changing the engine and would like to avoid doing an engine rebuild unless I have problems later on. When I bought the car I was told it has high energy ignition and a mild cam. I know that doesn't tell you much but that's what I know at this point. I did buy a 4 barrel quadrajet carb for the car which I have installed, running stock 14" wheels with 245/60r14 BF goodrich radial TA tires and I have 3.73 gears to install. I would love to get as much acceleration power as possible so I am looking for some suggestions on headers, which stall converter would work best with the gears and any other performance upgrades you would suggest. I will not be racing with the car but just want to experience more power than the stock 350 will produce. Any suggestions would be greatly appreciated.
Svu0312 is offline  
Old February 13th, 2019, 02:52 PM
  #2  
Moderator
 
oldcutlass's Avatar
 
Join Date: Oct 2009
Location: Poteau, Ok
Posts: 31,211
What carb was on it before? If it had a 2v, probably no cam was changed, the hi energy coil does nothing for performance. The best bang for your buck would be gears and dual exhaust.
oldcutlass is online now  
Old February 13th, 2019, 05:06 PM
  #3  
Registered User
 
Fun71's Avatar
 
Join Date: Feb 2013
Location: Phoenix, AZ
Posts: 5,900
Agreed on the duals and gears. I'd do those and ensure the tune is perfect, then stop there.

The factory engine is very low compression, like 8:1 if it still has the original thin head gaskets, so you have to be careful when changing the camshaft. The low compression ratio won't support much of an increase, so it's easy to overcam the engine and actually decrease performance.
Fun71 is offline  
Old February 13th, 2019, 07:37 PM
  #4  
Registered User
 
Join Date: Jan 2010
Location: central Indiana
Posts: 1,038
Find some earlier heads with smaller chambers, mill the crap out of the heads you have, make sure the carb and ignition is dialed in, install a mild converter, and have fun. Of you want more than that, look into a 200R4 trans swap. Lower first gear, and overdrive. Best of both worlds.
matt69olds is offline  
Old February 14th, 2019, 09:21 AM
  #5  
Registered User
 
olds 307 and 403's Avatar
 
Join Date: Dec 2006
Location: Melville, Saskatchewan
Posts: 4,552
What is your budget? Where do you mostly drive? In town or highway driving?
olds 307 and 403 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
scootergeo
Racing and High Performance
56
August 26th, 2014 03:41 PM
Johnathan Bjerk
Small Blocks
36
January 8th, 2013 07:53 PM
wmachine
General Discussion
11
December 30th, 2009 06:55 AM
gscott819
Small Blocks
26
July 28th, 2009 08:02 PM


Thread Tools
Search this Thread
Quick Reply: 350 rocket performance suggestions


Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.