Hey all,
I am planning to rebuild my 570 Street Avenger. In looking at the Speedway site. Holley has 3-4 different rebuild kits. I am pretty sure I need the Model 4150 kit, but which one.
Any of the 4150 kits will work, some just have more parts than the others and cost more. You'll have to look at the contents and see if a particular kit will fit your needs. The more expensive the kit the more complete it is and the more tuning parts it has(multiple power valves, etc). If you need a vauum secondary diaphram make sure the kit contains it, some don't.
I would think it would be the #42737485 or #427371546, but I'd call them to get an exact idea of the it contents.
If it has a metering block on the rear side of the carb between the bowl and the main body it is a 4150. I thought all the Avengers were 4150 carbs??
4160 means it has a metering plate inside the rear bowl and no seperate rear metering block.
Don't always trust Summit for correct info, go to Holley - either web site or call them. Summit's online catalog is full of mistakes on their web site, and some of the techs aren't any better, they are just reading off a catalog page.
That looks like a metering block to me..? I am going to be pissed if I told the guy I needed a 4150 rebuild kit and he talked me into another one, thinking I am wrong.
(note. this isnt my carb, just did a google image search for 570 street avenger)
That picture shows a metering block in the rear, just like what is on the front. Its a 4150.
The Holley kit you have coming may be ok, there is only one gasket different between the two types.
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