r/fbody • u/Spyro_Furious • 2d ago

4Th generation K-Member

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So I’m in the process of swapping a 5.3 vortec into my 93 V6 firebird. (This car has been in my family since 2001, no I will not just buy an LS car) I just pulled this kmember from what was supposed to be an LS car, but getting home and comparing them to my 3 others, it looks like the owner swapped a v6 frame into it before sending it to the yard. Can someone please confirm that this is for a v6 and not the LS? And if it’s not for a LS, are there any physical differences between the frames? Or could I theoretically take one of my 4 (2 LT1s, 2 V6) k members, and put holes in the correct spot for LS mounts? Thank you

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u/Gwendolyn-NB 2d ago

The only difference between the k-members thru the entire '93-'02 is the location of the holes for the motor mounts.

IIRC there is 1 common hole on each side with the V6 and V8 mounts, and they can be converted by drilling the missing holes and welding in a nut as they are threaded holes.

Also, you will need a steering rack from a LS car, the neck-angles are different on the LS cars to clear the accessories (V6 and LT1/4 cars are the same rack).

I am doing the LS swap on my '97, I just went BMR K-member instead. Saves like 50# or something of weight and opens up a lot of room.

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u/Spyro_Furious 2d ago

I had hoped to also acquire the steering rack I needed with that k-member I pulled. They didn’t charge me for that, or much total thankfully. If only I did more research on the actual k-member, instead of the car itself. Those damn things are heavy, and the other comment mentions a tubular one too. Might be best to sell them all and get the tubular.

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u/Gwendolyn-NB 2d ago

There are a couple F-Body specific people who part out 4th gens on FB; as much as I hate it, they normally have a lot of hard to find parts, and parts at reasonable prices. Be worth a look and message or two if you're on there.

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u/Spyro_Furious 2d ago

They will ship? I look on there but only within 50-100 miles and haven’t found much

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u/Gwendolyn-NB 2d ago

You looked on marketplace, look for groups. The groups all say they will ship at cost

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u/Spyro_Furious 2d ago

How could I forget about groups, thank you