Big block brake booster questions

[Staunch440]

Just wondering if the big block trucks ran a different brake booster to small block trucks?

I've recently purchased a 76 D100 2wd stepside and when pulling it down to replace rusty floors and finding many more problems we found the finned mopar performance rocker covers have been ground down for clearance under the brake booster. (And the heater box is damaged too.)
The truck was originally a 318 but now sports a 440 tunnel ram and fitech fuel injection.

What else should have been changed for the conversion? It's blown the rear uninout twice and we found the trans rear mount flogged out and the rear of the trans is cracked all the way around... an expensive and painful thing to replace when your in Australia.
Any info will be very appreciated.

 

[Polara_500]

Yes, the big block trucks used a smaller diameter booster.

 

[Staunch440]

Yes, the big block trucks used a smaller diameter booster.

Excellent. I will endeavour to find the right one... or maybe I'll find an aussie one that's smaller and more readily available.
Has anyone used the wilwood ones?

 

[LocuMob]

I just looked at the pictures you posted, your truck has the correct booster in it. If you had stock valve covers, they would clear without issue. The cast finned covers are taller, and why they were ground down. So, you have what you need, and what came with a big block.

 

[Staunch440]

I just looked at the pictures you posted, your truck has the correct booster in it. If you had stock valve covers, they would clear without issue. The cast finned covers are taller, and why they were ground down. So, you have what you need, and what was came with a big block.

Thanks. It's 4 nuts and a bolt to move the booster out of the way for maintenance.
Thats the least of my worries right now.

 

[Staunch440]

These transmissions aren't real common this side of the pacific

 

[Polara_500]

I just looked at the pictures you posted, your truck has the correct booster in it. If you had stock valve covers, they would clear without issue. The cast finned covers are taller, and why they were ground down. So, you have what you need, and what was came with a big block.

I didn't look at any pics, but when I did I agree with the loco dude.......