04-26-2008, 04:25 PM
was going to put engine in truck changed my mind now going in 67 camaro,
now ive read ls swap in camaro but thread is more for efi want to know whats needed to put a 5.3 with a carb in the car, I currently have a 402 big block with a th400 would like to reuse the trans any help would be appreciated. dont currently have 5.3
04-26-2008, 10:41 PM
The th400 will bolt up if you elongate the holes in the flywheel and buy a spacer for the Torque convertor. Or you could get a new convertor and specify that you want a LS1 nose on it.
You should be able to re-use your fuel system as long as you were previously running an electric pump.
Other than that I don`t really know what else I can think of, I haven`t done a carb`ed or 1st gen f-body swap.
04-27-2008, 07:37 AM
you can use a 6.0l flywheel 6bolt1999 to 2005 and the gm crank spacer.works great just used it th400 to 5.7ls1 1999 camaro
04-27-2008, 08:12 AM
You may have to reweld your crossmber. When using the TH400 it was designed to go behind BB engines. These engines had clearence problems with the steering box and their exhaust manifolds so they offset the engine 2" to the passenger side. You will have to cut and re-weld the TH400 mount. You may also have to drill new holes in your frame rail depending on where you engine mounts to. You will also have to change out your frame mount to SBC mounts.
You will need an intake, the edelbrock dual plane performer, Edelbrock Victor JR, or GMPP intake. Be sure to get the MSD 6010 ignition box NOT the edelbrock box. The MSD allows you to ajust timing with a laptop through a serial port. The edelbrock box allows you to adjust with only timing pills all of which have over 34* of timing in their curves. The Victor JR includes the bolts, and throttle, plus kickdown cable brackets with the intake.
MSD box, plugs into factory 8 coils, and runs timing off of cam and crank sensor. parth throttle timing adjustable through laptop when used with MAP sensor. It also has a 2 step rev controller, and a 12v timing retard wire (for nitrous)
I put in a new factory tank, new sender, and ran 3/8" braided SS line from the rear all the way up front. I mounted a holley 97GPH (might need bigger though) electric fuel pump right in front of the tank (electric pumps push fuel, mechanicals pull).
You will also need to modify your stock oil pan or buy an aftermarket one. I ran a Moroso 7qt pan, $225, had to buy a deep sump pick up $90, and it requires a remote mount oil filter with -10an lines so that was about another $150 with fittings. There are after market pans that dont require a remote filter though.
For exhaust Hooker headers, all the way! I got my set ceramic coated and all, they included bolts and gaskets. I dropped them in front the TOP of the motor without even touching anything and bolted them up in less than 10 minutes. They fit EXTREMELY well.
For your radiator I have read a few guys using the BB radiator and cutting two different size hoses then coupling them together with a reducing fiting to fit the raditor. I just used an LT1/LS1 radiator with electric fans and bolted it on.
Here are a few pictures of what i have come up with in my swap. The crossmember you can see where i cut and rewelded the mount. It is mounted backwards because thats how i had to mount the crossmember to get it to fit the T56 so it looks like it was offset to the driverside. It is not. The mount is offset to the passenger side when mounted correctly.
You can see the header clearence with the factory camaro/nova manual steering box. Again, these are ATS mounts with hooker headers. I'm not sure about your 5.3L with the truck accessories what all you plan on running and such. I am just running my water pump and alternater. I didnt have to modify anything but the belt size which advanced auto carried. I think the belt size was 53 1/3".
I think the carb setup looks nicer than the EFI. Plus it confuses people when you pop the hood and they cant find the big red MSD distributer. I ran 2001 truck coils on my engine. They supposedly burn/spark hotter and have built in heat sinks on the end of them. I'll also be runing a mr gasket 3 butterfly street scoop on my engine. The top of my choke horn touches my hood with the factory 2" cowl on the firebird. You might need a cowl hood to clear your carb/air cleaner.
My carb is a holley Hp 750 vac secondary. 6.5PV, #72 primary jets, a #21 metering block (like #75 jets) and from everything i read that will be extremely close to what all of the other guys have run for jets and similar setups. you could go with a 650 im sure with your setup and a size or two smaller jets.
04-28-2008, 11:44 PM
thanks for the the help it seem pretty straight forward hoping to pick up an engine very soon still doing some research planning on keeping it stock