402 swap questions

[CHEVYHD496]

i have a 71 c10 with a sbc in it, and i will be putting a 402BB in soon. i want to reuse my TH400 but can i reuse the torque converter for the BB? also what mounts and pulleys will i need? i dont have a/c. anything else i need to know to swap to a BB?

thanks all

[Livrat]

Yes you can use the same torque converter and flywheel, you will need all the corresponding BB pulleys, alternator and power steering brackets with pump/hoses, engine towers, fan shroud etc.

[CHEVYHD496]

can i use my sbc frame mounts to mount my BB? and whats the difference between 68-71 and 72 BB mounts? anyone use performance onlines tubular engine mounts?

[RenoKeene]

You'll need BB mounts and lots of other goodies. Check out the parts for sale section.
Welcome to the forum!
Here's a pic of my 402 for inspiration..

[CHEVYHD496]

looks good! what other goodies do i need?

[RenoKeene]

You'll need a BB power steering pump with remote resevoir and the pressure and return lines, also a 4 row radiator and shroud. Probably a 7 blade fan and spacer. If your serious start making a list and saving your $$. Check the parts forum for prices, with the parts we've already listed you're already looking at $500+
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[RenoKeene]

Oh yea, if your running AC, brackets are another $200.
It takes commitment to go big...but there is nothing like the roar of a big block under the hood!
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[VA72C10]

Originally Posted by RenoKeene

You'll need a BB power steering pump with remote resevoir and the pressure and return lines, also a 4 row radiator and shroud. Probably a 7 blade fan and spacer. If your serious start making a list and saving your $$. Check the parts forum for prices, with the parts we've already listed you're already looking at $500+
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I'd say 500+++ Almost worth looking for a truck with the 402 in it and then part out or sell the truck w/out the engine in it....

Prices w/out shipping (what I've paid and seen them sell for)
71 BB Mounts 100-150
71 BB mount rubber 100-150
Or do the small block mount modification 50-100
PS setup (lines, reservoir, pump)200-250
Fan shroud 100-150
Clutch fan 50-75
4 core radiator 200-250
4 core brackets upper and lower 50-100
Pulleys 150-200
alt brackets 75-100
bb exhaust manifolds 200-250 (or headers)
bb heat shield for firewall 50


That's 1275 on the low end for the parts (1725 on the high end)....if you can find a setup for 500 I'd JUMP on that deal!

I just sold a set of restored 72 big block brackets, pulleys, and the ps setup for 975 locally....what I paid for them when I got them...

[RenoKeene]

Originally Posted by VA72C10

I'd say 500+++ Almost worth looking for a truck with the 402 in it and then part out or sell the truck w/out the engine in it....

Prices w/out shipping (what I've paid and seen them sell for)
71 BB Mounts 100-150
71 BB mount rubber 100-150
Or do the small block mount modification 50-100
PS setup (lines, reservoir, pump)200-250
Fan shroud 100-150
Clutch fan 50-75
4 core radiator 200-250
4 core brackets upper and lower 50-100
Pulleys 150-200
alt brackets 75-100
bb exhaust manifolds 200-250 (or headers)
bb heat shield for firewall 50


That's 1275 on the low end for the parts (1725 on the high end)....if you can find a setup for 500 I'd JUMP on that deal!

I just sold a set of restored 72 big block brackets, pulleys, and the ps setup for 975 locally....what I paid for them when I got them...

Yea, I didn't want to give him a heartattack

[69sixpackbee]

You don't need those high-dollar AC pump brackets. I used a Sanden pump on mine and I went with the brackets that came with the retrofit kit. A lot cheaper.
Bud

[CHEVYHD496]

thanks for the info! im hoping to cut that price down alittle! ecspecially since im not running a/c

[sboris]

I have a couple things left i can make you a deal on, would get you started. Of course as va7210 stated a whole setup would be easier. Heres my thread.

IA Extra BB parts/4spd humpnboot misc ( 1 2)
sboris