anyone done a 632 BBC swap in a 72?

[8lugthug]

a close friend of mine has a 72 3/4 ton 4x4 and has purchased a new 632 bbc that he will be putting in his truck. What are some things he is going to need/rework to get this beast to fit. thanks

[davepl]

That's a tall deck motor, so about the only thing I can think of is booster to valve cover clearance. But it's not tight in stock form, but with tall covers to clear roller rockers plus the deck height... worth measuring.

Also exhaust has to be totally custom because the heads sit higher.

Was the 596 really not enough? That's available in short block, bolt-in in place of a factory 402 ;-)

[8lugthug]

ive been trying to find a hood for the truck because i know that it will not fit with the factory hood. been looking for the smallest cowl hood that is very suttle looking but havent had any luck. something that looks as close to stock as possible and it has to be steel not fiberglass...

also, ran into some clearance issues with the front of the engine and radiator. does anyone make a lopro pulley kit or something that will bring the front accessories in? this truck will retain a/c and all. or is pushing the radiator farther forward the only way?

[jocko]

Hmmmm.. My slo-poke 72 K20 has a piece o crap swap motor in it. Hmm... I wonderrrrrr what your buddy is gonna doooo... with his puny 'ol worthless 350? Hmmm.... (I still have relatives in Indiana!) Hmmmm..... Hmmmmm...

Good luck with that swap, sounds pretty ambitious. Is this for a monster truck or a stock-ish (otherwise) K20 with a hefty driveline? Curious what other mods and driveline are in store for the truck.

[8lugthug]

it is a factory 454 truck so that motor has been pulled already! its on 35" bfg all terrains with a 4 inch lift. I will post a picture of the truck.

[toolboxchev]

[8lugthug]

https://mail.aol.com/webmail/getPart...scope=STANDARD

[8lugthug]

here is the truck that the 632 is going in.

[35boulder]

Very nice looking truck. Nice looking shop as well.

[8lugthug]

Originally Posted by jocko

Hmmmm.. My slo-poke 72 K20 has a piece o crap swap motor in it. Hmm... I wonderrrrrr what your buddy is gonna doooo... with his puny 'ol worthless 350? Hmmm.... (I still have relatives in Indiana!) Hmmmm..... Hmmmmm...

Good luck with that swap, sounds pretty ambitious. Is this for a monster truck or a stock-ish (otherwise) K20 with a hefty driveline? Curious what other mods and driveline are in store for the truck.

It will be running a built th400 with a built 205 tcase behind it. the truck will look exactly how it sits so to keep the classic style of the truck. all the internals of the axles will be beefed up with lockers and most likely chromoly shafts. He had to get an adapter to pair the 205 with the th400 which married together great.

[CRUSH2.0]

Originally Posted by 8lugthug

here is the truck that the 632 is going in.

WOW I like that!! What tires and lift are on that?

[Mike C]

Originally Posted by 8lugthug

it is a factory 454 truck so that motor has been pulled already! its on 35" bfg all terrains with a 4 inch lift. I will post a picture of the truck.

That is a great looking truck. But there were no factory big block 4x4 trucks from 67-72 and the 454 wasn’t installed in a truck until 1973. If it had a big block installed at some point, the 632 will go in as well. Just be warned that exhaust is a PITA on a tall deck motor.

[clay68c10]

Very nice looking truck!
The factory 2wd BBC trucks used the short water pump accessory drive. I think early Chevelles had the same parts. It is kind of tight but very do-able.

[8lugthug]

Originally Posted by Mike C

That is a great looking truck. But there were no factory big block 4x4 trucks from 67-72 and the 454 wasn’t installed in a truck until 1973. If it had a big block installed at some point, the 632 will go in as well. Just be warned that exhaust is a PITA on a tall deck motor.

Sorry meant to say it had a 454 in it when purchased. the Headers will most likely have to be made from scratch. i can already see its going to be a huge pain. the front pulleys and radiator clearance seems to be tough. anyone know of some kind of lo pro pulleys set or someway to extend this gap? Thanks!

[8lugthug]

Originally Posted by CRUSH2.0

WOW I like that!! What tires and lift are on that?

it is a 4" lift with 35x12.50 bfg's

[CRUSH2.0]

Originally Posted by 8lugthug

it is a 4" lift with 35x12.50 bfg's

Sorry one more question. What type of lift?
Thanks and Merry Christmas!

[8lugthug]

Originally Posted by CRUSH2.0

Sorry one more question. What type of lift?
Thanks and Merry Christmas!

Im not sure the brand of the lift but i will ask him. it was recently put on though while the truck was undergoing its resto.

[jocko]

Originally Posted by 8lugthug

It will be running a built th400 with a built 205 tcase behind it. the truck will look exactly how it sits so to keep the classic style of the truck. all the internals of the axles will be beefed up with lockers and most likely chromoly shafts. He had to get an adapter to pair the 205 with the th400 which married together great.

Got it, thanks for sharing. I can't imagine what the 632 conversion will end up costing, but, dang, I wouldn't change ANYthing on that beauty! Ha. That's just me though - everyone has their own truck plans & dreams, completely understand that simple fact. I really like that the plan is to keep it semi-stock looking on the outside. Can't wait to see how it progresses and thanks again for sharing.

[8lugthug]

Originally Posted by CRUSH2.0

WOW I like that!! What tires and lift are on that?

So the lift on the truck is not a kit. The springs were custom made and arched to his wanting. the rims were also made to 10" wide to accommodate the correct offset and width that he needed to fit and clear the 35" bfg's

[CRUSH2.0]

Originally Posted by 8lugthug

So the lift on the truck is not a kit. The springs were custom made and arched to his wanting. the rims were also made to 10" wide to accommodate the correct offset and width that he needed to fit and clear the 35" bfg's

Thanks brother! do you know who made the rims?

[Killer Bee]

nice lookin' rig to start with!

here's a big brodix I looked at in a '71 K20 burb..

got all excited until I noticed all the frame loss and no cross member, just custom perches to the block from each side!

seller sort of inherited so they didn't know too much about it..

but I knew exactly why all the door margins were off and the driver's door wouldn't even close to latch!

then the body had serious issues so I had to leave that one and drag the trailer home m/t

from my understanding there weren't any BBC in the K srs because the K frames are narrower than the C frames..

so the point is, you can put anything in anything, just gonna have to fab a little bit sometimes to get it in there right..

look just under #2 plug boot, worse in other places

[8lugthug]

So here are some pics of motor in the bay, and the holley dominator efi that will be used to support this monster!

[68Gold/white]

LOL, I like the way you think!!!

A 632??? Why NOT, you only live once!!!

[CRUSH2.0]

Originally Posted by 8lugthug

So here are some pics of motor in the bay, and the holley dominator efi that will be used to support this monster!

Go big or stay home!!!

[8lugthug]

Originally Posted by 68Gold/white

LOL, I like the way you think!!!

A 632??? Why NOT, you only live once!!!

Haha exactly!