Guest lenny38 Posted June 22, 2011 Share Posted June 22, 2011 Just bought this car. What do I have to add to the gas?Thank you Link to comment Share on other sites More sharing options...
Jim Rohn Posted June 22, 2011 Share Posted June 22, 2011 octane booster will help, it depends on which engine you have and what the compression ratio is.Has anything been done to the engine ever? Link to comment Share on other sites More sharing options...
Guest lenny38 Posted June 22, 2011 Share Posted June 22, 2011 It is a 335hp 312 c.i. V-8 with a 4 barrel carburetor Link to comment Share on other sites More sharing options...
Rusty_OToole Posted June 22, 2011 Share Posted June 22, 2011 (edited) You may need to use hi test to get enough octane and something to protect the valves. Todays unleaded is nearly the same as what your car was made for octane wise but lacks the lead that cushions the valve from wear. Edited June 23, 2011 by Rusty_OToole (see edit history) Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted June 23, 2011 Share Posted June 23, 2011 It is a 335hp 312 c.i. V-8 with a 4 barrel carburetormore like 235 hp.Chevy ballyhooed their 283 cu engine in 57 which produced 283 hp (1 horse per cube) but that was with a supercharger. The best ford got was about 300hp with a supercharger. They also had a dual Quad version at about 275. Link to comment Share on other sites More sharing options...
PONTIAC1953 Posted June 23, 2011 Share Posted June 23, 2011 hi dave, chevrolet in the 1950's never had a supercharger, fuel injection, and two four barrel carburetors, yes. but no supercharger. the 283 horsepower 283 cubic inch engine had the rochester fuel injection set up. charles coker, 1953 pontiac tech advisor. Link to comment Share on other sites More sharing options...
PONTIAC1953 Posted June 23, 2011 Share Posted June 23, 2011 valve wear concerns would be valid if the engine were to operate above 3000 rpms all the time. lenny, if you were to add some lead type product in every 10th time you filled up the gas tank, you would be giving the valves more protection than required. charles coker, 1953 pontiac tech advisor. Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted June 24, 2011 Share Posted June 24, 2011 hi dave, chevrolet in the 1950's never had a supercharger, fuel injection, and two four barrel carburetors, yes. but no supercharger. the 283 horsepower 283 cubic inch engine had the rochester fuel injection set up. charles coker, 1953 pontiac tech advisor.You're certainly right,Charles. I knew that and I feel a little embarrassed to have slipped up. Link to comment Share on other sites More sharing options...
Guest LCI Posted June 24, 2011 Share Posted June 24, 2011 The standard engine was 210 HP @ 4600 With 8.0 CRTwo options were 215 HP @ 4600 With 8.4 CR 225 HP @ 4600 With 9.0 CRCarb was Holley ECZ-9510 A&B DD 4 Barrel Data from the 1956 Ethyl Corporation Breif Passenger Car Data Book . Dan Link to comment Share on other sites More sharing options...
Jim Rohn Posted June 24, 2011 Share Posted June 24, 2011 what they are saying is that you should be fine with a "top tier" premium grade of gas and an occasional can of additive.Look up or google "top tier" fuel/gasI was a lifelong believer that all gas is the same, now I am notfor certain engine systems top tier is the ONLY way to go and in our case not all top tier fuel is the same ... Link to comment Share on other sites More sharing options...
Rusty_OToole Posted June 24, 2011 Share Posted June 24, 2011 The rule of thumb is that your octane should look like your compression ratio. In your car, top HP engine was 9:1 comp so today's hi test of 91 or 92 octane should be ample.Naturally this is not a hard and fast rule, just a guide. You could try 89 or even 87 and see how it performs. If it runs smooth with no knocking or pinging it should be fine. Link to comment Share on other sites More sharing options...
Guest gibson4 Posted November 9, 2013 Share Posted November 9, 2013 We have a 56 Mercury Montclair and are trying to find parts for it can anyone help us Thanks Brandy Link to comment Share on other sites More sharing options...
Guest Commodore Posted November 10, 2013 Share Posted November 10, 2013 Try these companies.http://www.classicmercury.com/http://www.mercuryland.com/Catalogue.htmhttp://macsautoparts.com/1949-1959-ford-mercury-passenger-car-parts/camid/F50/ca/146/http://www.classicautopartsinc.com/sub/mercury/http://www.ctcautoranch.com/Parts%20Cars/Parts%20Cars%20Sub-Pages/Parts%20Cars%20Mercury.html Link to comment Share on other sites More sharing options...
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