Re: 4gc woes

Posted by d c On 2016/4/27 16:36:14

There are many issues with the 4GC some of which are design issues known by the manufacturers back then which have stop gap remidies at best. Some of these issues are amplified by the 352 intake design . The duals used may be less affected due to the carbs not sitting directly over the exhaust cross over. I have a bulletin on heat related issues still being battled by stop gap remidies nine year after it use on the 352. I also feel raw fuel and fuel vapors may be causing oil dilution on the engines and washdown and may excelerate wear and lifter noise. Be careful with the floats and watch for flooding.
I replaced one on a 352. The car ran flawlessly for years - oil clean- no lifter tap. No rich smell- no fuel smell- no need for elec fuel pump. The car could sit for 4-5 or more weeks and start right up with 2 pumps.
Of course i also had a hotter spark with the pertronics and had disabled the crossover in the intake as it was of no use with our planned usage. If you are in a hot weather climate and or are not using as a daily driver in cold ambient temps I would recc the same.