C2 Master Cylinder Clearance Issues W/BBC
Thread Starter
Racer
Joined: Oct 2005
Posts: 353
Likes: 0
From: Citrus Heights Kaliforneenya
C2 Master Cylinder Clearance Issues W/BBC
I posted this in Drag Racing then realizing it may not be the appropriate place.
Anyone ever mess around with the master on a 65/C2? I am looking for options to run some these BBC GM performance valve covers. The factory style dual master won’t clear. Seems everything thing I see that may fit has vertical bolt pattern... Anyone know of something? Or any viable mods to change things up... I have tortured all the web sites, although unless you have something in hand is a geuss at best. I seem’s a 2 inch dia is a nice dia to clear the covers. I have been told welding these covers is sketchy at best? I dunno I don’t tig... They are very thick V covers and would seem OK to weld.....
Thanks in advance,
Denis
Anyone ever mess around with the master on a 65/C2? I am looking for options to run some these BBC GM performance valve covers. The factory style dual master won’t clear. Seems everything thing I see that may fit has vertical bolt pattern... Anyone know of something? Or any viable mods to change things up... I have tortured all the web sites, although unless you have something in hand is a geuss at best. I seem’s a 2 inch dia is a nice dia to clear the covers. I have been told welding these covers is sketchy at best? I dunno I don’t tig... They are very thick V covers and would seem OK to weld.....
Thanks in advance,
Denis
Burning Brakes
Joined: Jan 2003
Posts: 755
Likes: 32
From: Roswell Georgia
If You're Hitting the M/C Itself, Whoa Nelly!
Are you experiencing interference from the master cylinder unit itself or the vacuum-actuated power brake diaphragm canister? As I remember working on the BBC C2's, the valve covers for these units were "notched" to provide clearance solely for the power brakes canister.
If the non-power brakes master cylinder unit is causing interference, you might be able to switch from the 1966 early wide body unit to the narrower 1967+ style. (I don't remember any 1965 models having a dual master cylinder from the factory.)
Now for the fun part... Having raced a BBC Vette in the 70's with IMSA, we lowered our L88's and moved them back a tad to lower our center of gravity to improve the handling. You may have to do the same to achieve the clearance you need. (Just realized that moving the engine back significantly requires a custom drive shaft.)
Another solution is the swap over to aftermarket units like dual Tiltons or Girlings which will require fabrication to the firewall and brake pedal linkage. (You'll need dual units to maintain the braking power needed for the Vette's power.)
If all this seems too much, changing the valve covers back to the originals may be your best option.
Good luck with the change(s)!
If the non-power brakes master cylinder unit is causing interference, you might be able to switch from the 1966 early wide body unit to the narrower 1967+ style. (I don't remember any 1965 models having a dual master cylinder from the factory.)
Now for the fun part... Having raced a BBC Vette in the 70's with IMSA, we lowered our L88's and moved them back a tad to lower our center of gravity to improve the handling. You may have to do the same to achieve the clearance you need. (Just realized that moving the engine back significantly requires a custom drive shaft.)
Another solution is the swap over to aftermarket units like dual Tiltons or Girlings which will require fabrication to the firewall and brake pedal linkage. (You'll need dual units to maintain the braking power needed for the Vette's power.)
If all this seems too much, changing the valve covers back to the originals may be your best option.
Good luck with the change(s)!
Burning Brakes
Joined: Jan 2009
Posts: 796
Likes: 1
From: Georgetown Texas
Are you experiencing interference from the master cylinder unit itself or the vacuum-actuated power brake diaphragm canister? As I remember working on the BBC C2's, the valve covers for these units were "notched" to provide clearance solely for the power brakes canister.
If the non-power brakes master cylinder unit is causing interference, you might be able to switch from the 1966 early wide body unit to the narrower 1967+ style. (I don't remember any 1965 models having a dual master cylinder from the factory.)
Now for the fun part... Having raced a BBC Vette in the 70's with IMSA, we lowered our L88's and moved them back a tad to lower our center of gravity to improve the handling. You may have to do the same to achieve the clearance you need. (Just realized that moving the engine back significantly requires a custom drive shaft.)
Another solution is the swap over to aftermarket units like dual Tiltons or Girlings which will require fabrication to the firewall and brake pedal linkage. (You'll need dual units to maintain the braking power needed for the Vette's power.)
If all this seems too much, changing the valve covers back to the originals may be your best option.
Good luck with the change(s)!
If the non-power brakes master cylinder unit is causing interference, you might be able to switch from the 1966 early wide body unit to the narrower 1967+ style. (I don't remember any 1965 models having a dual master cylinder from the factory.)
Now for the fun part... Having raced a BBC Vette in the 70's with IMSA, we lowered our L88's and moved them back a tad to lower our center of gravity to improve the handling. You may have to do the same to achieve the clearance you need. (Just realized that moving the engine back significantly requires a custom drive shaft.)
Another solution is the swap over to aftermarket units like dual Tiltons or Girlings which will require fabrication to the firewall and brake pedal linkage. (You'll need dual units to maintain the braking power needed for the Vette's power.)
If all this seems too much, changing the valve covers back to the originals may be your best option.
Good luck with the change(s)!
Burning Brakes
Joined: Jan 2003
Posts: 755
Likes: 32
From: Roswell Georgia
You sir are correct! (My bad. Dang those "senior moments".)
Looking at the Paragon Corvette website, it appears that the '65 shared the same "wide" body, dual M/C as the '66.
Looking at the Paragon Corvette website, it appears that the '65 shared the same "wide" body, dual M/C as the '66.
