[grivera]

Originally Posted by HWYSTR455

Just to add, you should be able to increase your vacuum signal at idle with more timing advance. If you go to full manifold vacuum and limit it, it will help a lot.

If that doesn't give you what you want, you can upgrade to a dual diaphragm 9' booster, if you don't mind it not looking OE.

Manual is a very good option if the above all doesn't give you what you want.

My personal opinion, hydroboost has its place, but not on a muscle car. The driver experience kills it for me. Not to mention added complexity, troubleshooting, weight, and appearance.

The order of above suggestions creeps up on the 'problem' resolution and makes sense to approach it in that order. To me, anyway.

I have and do run some pretty 'radical' cams on the street compared to most, have about 11-13", and a dual diaphragm booster works for me.



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I assume you have the tall aluminum fab’d valve covers- if so how is the clearance at the booster?