Bad float (sinks),Incorrect float adjustment,
Excessive fuel pressure,
Dirt in needle and seat,
Excessive heat (boiling the fuel),
Possible that the float is sticking.
Mercurys were equipped with Autolite 4100, if a 4-barrel, or the Autolite 2100 if a 2-barrel. The Autolite 4100 is one of the finest carbs ever made. It was designed by Holley and is a square-bore carb similar to the HOlley 4150.
first you will need a 2 barrel carby. then you will need either a new inlet manifold for a 2 barrel, or an adaptor plate that goes from 4 barrel to 2 barrel. using an adaptor will be cheaper than an inlet manifold
With a Flat head Screwdriver
The answer is yes, it will produce more power than a stock 4 barrel.
Yes, same block, same basic engine. I have a 273 with 318 heads on it, and a 2 barrel Holley, but the Carter BBD was stock.
65 h.p. Nope! 1957 312 cid thunderbird y block with three two barrel holley carbs
A small one with vacuum secondaries.
holley 4150 c
On most if not all 2-barrel and 4-barrel carburetors the part number is located on the front left (driver's)side of the air horn.
No,as I said it is 383 magnum or 383 Hi-PERFORMANCE. conservative rating of 335 HP for insurance purposes. single 4 barrel,maybe 780 Holley. It is no Hemi,but also no gutless engine
There is no simple answer to this question, as the Holley is a universal carb and can be tuned to suit most any application. There are how-to books on this subject, and highly recommended for someone trying to tune one. Also, the Holley tech service library can be very helpful. http://www.holley.com/TechService/Library.asp
Yes, if you use the right intake manifold. But, if the 7.5 is factory fuel injected you're better off not using the Holley. Just get bigger injectors and a bigger air intake.