Question 426 Hemi Brake Booster offset in 70 Challenger

I apologize if there are already posts or documents on this subject, I searched and could not find what I'm looking for.

My Big Block 4-Speed 70 Challenger currently has a small diameter power booster but I was told, in order to install my 426 Hemi, it would require an offset brake booster and different MC.

1.) Is there a document or post that details exactly what kind of brake booster & master cylinder is required to fit under the hood with a 426 hemi ?

2.) Is it possible to simply buy an offset bracket for my Booster & MC ?

Thanks in advance,

Wayne Brown is in Ft. Worth. He can hook you up with what you need. Go with a factory engineered system. Way less trouble, not the cheapest, but the best way. https://therammaninc.com/products/E-BODY-148

I make a new hemi booster assembly. See below:

https://www.doctordiff.com/bendix-style-dual-diaphragm-booster.html

Why in the world people still recommend this clown is beyond me. DON’T deal with him. Do a google search and see the negative feedback on him. If you don’t believe me, call Frank Badalson and see what happened to him when he bought a e body hemi booster from the rammer man.

Yes, you need a special offset bracket and booster. Don’t bother trying to find an original factory one. They are impossible to find. I just sold one and they are very expensive. The factory one requires a Hemi only booster and a Hemi only bracket. If I read your post correctly, you don’t have a real hemi car, you just are putting a hemi in your car. So, just buy the reproduction one from DoctorDiff. It works fine and 99% of the people can’t tell the difference. It’s much cheaper.

Absolutely agree here…fastmark has given you the best advise you’ll ever hear. Stay away from ramman, go direct to dr. diff. You’ll be miles ahead in quality of parts and no aggravation.

You should be able to find post to explain the differences on a real hemi booster. Stud pattern and size. Unique and hard to find bendix MC for E body, and the hemi offset brackets. Believe DR Diff uses the non hemi booster bolt pattern and booster arm, but he can confirm
that.

If your a disc brake E body with orig KH set up you can certainly go with the 70 B body master cylinder. Slightly different shape but 1 1/8" bore and the 70B used the same disc brake hardware as the E body (70-72 B/E).

Now if your manual drum you do not need the offset bracket, and that makes it a lot easier on engine maintenance.

I agree with fastmark, do not call the ram man - very dishonest person.

just listening to his videos does it for me.

I know an older post, but it just came up in some research I was doing. I have worked with Wayne the RamMan four times, twice in the past three years, each time the work was excellent and fast. Both the recent jobs included the refurbishment of a booster (one a Hemi), one included a Master cylinder rebuild and the other was me buying a very rare Master Cylinder from him. I just thought I should add my experience to this thread.

the name ram man does it for me

talking to him at carlisle one year, he started to get a little "grumpy" with me when i asked him a simple question, so i just walked away. he may have needed products and knowledge, but i have enough things in life to deal with without adding dealing with him to the mix.

I bought a "Hemi" booster from one of his eBay ads. It took forever so I inquired and was told that these take additional time, including painting, because they are Hemi. Okay, sounds reasonable. Then it arrived. The paint job looked like one from a graduate of the Stevie Wonder school of paint. I could have lived with that but the input pushrod looked like someone took a steel rod, a torch and a hammer, and made one. Couldn't live with that. One thing that's always been stressed to me is that you don't screw with safety or emissions and I consider this in the safety class. Told him I wanted my money back and I'd even pay to return it. He was not a happy camper but I did get my money back. Moral of the story: never again.

I purchased a hemi set up from him a few years back. He always seemed like you were an inconvenience the two times I called to inquire/ask questions about it. Installed the master cylinder and it leaked. Never again.

!