ZZ502 conversion,those with experience Pls chime in

[Chuck-75]

Im real close to making the next step in purchasing a ZZ502 for my 75 vert. Id like to ask questions of those that have done this ?, im going to rebuild my TH400 and get a new Aluminum radiator with electric fans, Id like to go with a serpentine belt and keep the power steering,altenator, and also the A/C, ... questions are?,what type of stall converter?, should i stay with the original rear gears?(I think I have 3.08), looking for sugestions about the mounting hardware for the accessories to acomplish the serpentine belt system, those who have done this conversion,what problems am I going to run into?, I plan to upgrade the suspension to urethane and new ball joints and install 550 Lbs springs with a 1 1/8 in bar in the front, the rear will get a new mono spring and sway bar also, .................I dont take the car on long drives and Im looking to get strong performance and reliability, I plan on Hooker side mount headers, :eyerole I think Ive covered most of my plans but would like to be prepared as much as posible before I get the new crate engine and end up turning it into a coffee table? :cry . Tks for all the help Ive recieved in the past guys ...

 

[AKRAY4PLAY]

the conversion is time consuming and can lead to unexpected expenses, but it sounds like you have most things covered. the rear gear is a little tall for performance, but since you staying with a three speed it will help with economy. the 502 makes enough torque to pull a 3.08 and still be a fun car to drive. March makes a very nice serpentine conversion kit, i like mine. the only problem is the power steering fill cap is under the water pump, but i am told this not a problem with the big block set-up. another route is to get the serp brackets off of a '90 or newer vehicle. they don't look as nice, but there are bunches sitting around in junk yards. a 2400 stall would compliment the 502 with 3.08 gears. going big on the stall allows slippage and makes heat at cruising speeds. heat is about the only krytonite for a th400. your exhaust is good, look into some spirol baffles, the Hooker stuff is to restrictive. a bigger fuel line may be needed as well. other than that, have fun with the project. it should rip when you're done. Brian

 

[problemenko]

Gents, I'm in the process as well of collecting information on swapping a BB into my 79. Chuck-75, you mentioned using a 90 or newer serpenting system. Can you elaborate on what is needed to install this system?