Conversions & Swaps LSX Engines in Non-LSX Vehicles
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1972 Nova build 5.3 boost

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Old 01-01-2019, 07:12 PM
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Default 1972 Nova build 5.3 boost

I have a 1972 nova that I'm going to put a 2003 5.3 in. Ive been reading a lot of threads here and at sloppy mechanics website. Im going to follow his receipt for 500-600 hp. I still have a few questions. Im going to run a th400 and was wondering what crossmember you guys are running? Also what do you guys recommend for accessories? Stay with what comes on the engine or go fbody? Planning on using dirty dingo mounts, holly 302-3 oil pan for clearance on the frame. Here are a few pics of her.

Thanks in advance
Old 01-01-2019, 08:12 PM
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The crossmember should be easy enough as long as the motor mounts you use place the bellhousing in the same place as a standard small block. Like this one.

As far as the front accessories are concerned we used the truck setup on my son-inlaws 73 Nova with a LS3 water pump and spacers with aftermarket intake, The water pump spacers are tapped so you can run a steam line to it. Spacers
Old 01-01-2019, 09:07 PM
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i have a 66, but when i put the th400 in i just chopped the crossmemeber bolted it up to the car and the trans, then connected them back together with some angle iron. was super simple solution. its solid. and was cheap.
Old 01-02-2019, 10:14 PM
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Originally Posted by LLLosingit
The crossmember should be easy enough as long as the motor mounts you use place the bellhousing in the same place as a standard small block. Like this one.

As far as the front accessories are concerned we used the truck setup on my son-inlaws 73 Nova with a LS3 water pump and spacers with aftermarket intake, The water pump spacers are tapped so you can run a steam line to it. Spacers
cool thanks for the link. what did you guys do about alternator bracket? did you mount it low or stock location?
Old 01-03-2019, 01:08 PM
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Truck accessories will come with your swap motor and work just fine.... stock location alternator works fine and if you don't have power steering just cut that part of the bracket off. The pics didn't load !

Dirty dingo sliders are a good choice, I have used them in 2 builds. My crossmember for the th400 is the 1969 Firebird th400 crossmember found on ebay for like 90 bucks.
Old 01-03-2019, 07:46 PM
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Originally Posted by socal72nova
cool thanks for the link. what did you guys do about alternator bracket? did you mount it low or stock location?
It's up top on the drivers side with this setup, Before it got the blower it was up top on the other side.



Old 01-03-2019, 07:51 PM
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They are Holley 20-131 brackets (Holley stock photo)


Old 01-03-2019, 10:36 PM
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Originally Posted by Suncc49
Truck accessories will come with your swap motor and work just fine.... stock location alternator works fine and if you don't have power steering just cut that part of the bracket off. The pics didn't load !

Dirty dingo sliders are a good choice, I have used them in 2 builds. My crossmember for the th400 is the 1969 Firebird th400 crossmember found on ebay for like 90 bucks.
thanks. I do have power steering on my nova. Ok cool because i could have thought i read somewhere that I couldn't use all the stock accessories? What motor mounts are you using? Ill check ebay for the tranny thanks
Old 01-03-2019, 11:23 PM
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You probably already know this but the Nova and 1st gen Camaro/Firebird share the same basic subframe.
Old 01-04-2019, 09:38 PM
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What turbos are you guys running? Im thinking about running a bw s475 75/96, or 2 china turbos. Still up in the air about it.
Old 01-04-2019, 10:13 PM
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7875 cast wheel from VS Racing. its a pretty proven setup.
Old 01-06-2019, 07:56 PM
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Originally Posted by turbohf
7875 cast wheel from VS Racing. its a pretty proven setup.
oh ok. nice! ill check them out




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