71frameoff

I put a 1 inch spacer under 1957 finned valve covers (don't ask why). I have my body off the frame (1971 coupe with a 350) and wondered if the valve covers will hit the power brake booster? has anyone done this? do I need to go to hydorboost brakes?

mbeeman350

I have tall valve covers on my 72 small block to clear the roller rockers. and have plenty of clearance between the booster and covers.

DUB

I have used spacers to allow the factory valve covers it clear.

QUESTION: Why are you using those valve covers? Unless you are using an engine block with the provisions in it...and an intake manifold with an oil fill tube/PCV fitting...using those valve covers in a 350 cubic inch engine....will not allow the engine to breathe. Those 1957 valve covers have no holes in them Due to not having a hole in them for the PCV...and a hole in the other valve cover for your fresh air filter.

DUB

Vette-kid

I'm using spacers on my 78 with script covers and power brakes with no issues. I added anil fill port and PCV

3JsVette

WOW that's a little different and it looks great. very nice!

Vette-kid

Thank you 👍

OP, sorry i do not have a pic in the car. I'm not sure how close my78 would be to you car for this purpose, but i can measure our get a pic tomorrow if you would like.

DUB

NICE JOB...but one question????

You either bought these covers already modified or did them yourself....and I am curious...where the PCV is in the valve cover...it is baffled so it can not suck oil directly into it????

DUB

Vette-kid

Modified them myself. And yes there is a small baffle. I will check it after a few miles to be sure

DUB

NICE JOB! Hope that you design works for you.

I am impressed. This would actually 'catch my eye'...make me stop and look at it if your car were at a car show.

DUB

71frameoff

lots of personal reasons, who i got them from and need to make him part of my restoration. I have added provisions for breathers, pvc and oil fill to the spacers. dynoed the engine 3 times 6 pulls each time with a 100 cycle break in (computer controlled done by Phaff racing engines). no problems and he did machine work on the spacers and the engine. 427 small block stroker 750 holley made 512 HP with 545 torque.

71frameoff

thanks for the info. beautiful work!!

71frameoff

thanks for checking

Vette-kid

Thank you! Quite the compliment from you. I really like the look and was determined to find a way to make them work, as it appears, is 71frameoff. You can get baffles to weld in (or fab your own) or grommets that have a baffle. Like I said, I will pull it to check and make sure it isn't sucking in too much oil periodically, hopefully it works well. If not I will have to work on something else.

The other issue with risers and old valve covers is the fact that you have two sets of gaskets to worry about. I used the spreader bars to help even the load on the old stamped steel and hopfullygive a good seal. So far no oil weeping, time will tell.

DUB

I was just curious...and you did make provisions for crankcase breathing...which is what I was getting at. Becasue I am sure you would agree that just putting those valve cover on and sealing up the engine where it could not breathe..is NOT a good thing.

Many people may read this and do what you did...but if they do not know you did modifications....they could have a problem and not know why.

Did not mean to insult your ability.

DUB