Carb'd 5.3 cam selection
03-14-2016, 09:39 AM
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Carb'd 5.3 cam selection I an putting a carb'd 5.3 in my 1985 Mustang. The 5.3l is a L59 out of a 2005 Flex Fuel Suburban. Right now it is all stock. Here is a list of what I have:
MSD 6010
Holley Single-Plane 300-132
AED 750 Double-Pumper
2010 Camaro Exhaust Manifolds
I have a set of Stock 799 heads that I can have milled to 61cc to match the 706 heads that are currently on the engine or I can just run the 706 heads.
I plan to run an NX plate system with 150 shot.
Rearend is a Ford 9 inch with 3.90 gears and a spool.
Transmission is a TH400 with a 3800-4100 stall and transbrake valve body.
What cam should I run? I would be awesome to find a drop in cam that will not require all new springs, keepers, seats, etc...
MSD 6010
Holley Single-Plane 300-132
AED 750 Double-Pumper
2010 Camaro Exhaust Manifolds
I have a set of Stock 799 heads that I can have milled to 61cc to match the 706 heads that are currently on the engine or I can just run the 706 heads.
I plan to run an NX plate system with 150 shot.
Rearend is a Ford 9 inch with 3.90 gears and a spool.
Transmission is a TH400 with a 3800-4100 stall and transbrake valve body.
What cam should I run? I would be awesome to find a drop in cam that will not require all new springs, keepers, seats, etc...
03-14-2016, 03:16 PM
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I would call Martin Smallwood about a cam. The cam will determine if the springs will need to be changed but if you are wanting to run any decent sized cam it would be a good idea to change springs.
03-15-2016, 04:00 PM
#3
There are cams out there that will work with factory springs and push rods. I do normally though like to recommend at least swapping the factory springs for a new set of factory springs which will also require new one piece seals/locators.
I have done a lot of cam packages that use LS6 springs and run well.
I have done a lot of cam packages that use LS6 springs and run well.
03-16-2016, 08:46 AM
#4
I'm in the same boat, I'm getting ready to buy a cam for my L33/4 speed car but I don't want to go through the hassle of a cam swap with out netting results that are worth it IMO. If the springs don't need changed Ina cam swap you didn't go big enough 
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03-16-2016, 10:05 AM
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After looking around and reading on cam selection for ls engines, it looks as though I will be upgrading to the BTR .650 lift spring kit. Im currently looking at getting a TreX cam, Vindicator, or MS3/4 cam as those seem to do the best with NA/Nitrous setups. Thanks to those that have responded.