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#1
12-08-2012, 05:33 PM
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Best brake update for 15 inch wheels?
Hi,
due to an new high power engine my 73 Trans am desperately needs better brakes. What is the best brake update that will fit under stock wheels? Regards Thomas |
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#2
12-16-2012, 11:01 PM
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what are your stock wheels?
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#3
12-17-2012, 09:10 AM
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15x8 Rally II wheels....OK so they are not completely stock but i guess the fitment issues will be the same like with 15x7 originals...
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#4
12-26-2012, 12:59 PM
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I got a noticeable improvement by changing the rotors to SBC slotted rotors and a set of Hawk ceramic brake pads.
__________________
1977 TA 400 9.5:1 CR 351hp 414LbFt, #13 Heads + 1.52 Roller rockers, 1968 Pontiac 400 intake, Holley 4165 650 DP #7054 Howards Hyd .447/.467 IN:288 EX:298 214/224@.050, MSD6A + MSD timing control + H2o/Meth 1-5/8" headers, Magnaflow 200CPI Cats + 2.5" Pypes X, Dynomax STs, TH-700R4 2200 stall, 3.42 Eaton 10-bolt, PS/PB/PW/PL/AC/Cruise 13.84@100.14mph 2.18 60' on P255-60-R15 radials, pump gas, mpg : 21.5 hwy 15.2 city 
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#5
12-26-2012, 01:15 PM
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Got power steering?
Go Hydroboost! AND, make sure you have good lap & shoulder belts. You will need them in a panic stop! Charles |
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#6
12-26-2012, 03:40 PM
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Where can i get the best hydroboost setup?
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#7
12-26-2012, 05:20 PM
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Hmmmm, that I can't tell you. I'm too hardheaded to pay $900 for one of those kits, so I bought one for a 83 Chevy 2500 series truck for $100 and two GM hose for $30 a piece and it works so good it is amazing!
Best way I can describe it is "Like throwing out the anchor". Charles |
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#8
12-27-2012, 04:54 AM
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Inline Tube
Being that Inline Tube is a top vendor for Ames Performance Engineering, and after some research, I went with Inline Tube all the way. I'm using 15" Rally II's. No fitment issues whatsoever, and each side only took about (1) hour, and the dual master cylinder about (2) hours. Dave
__________________
'65 GTO Hardtop  389 .030 400ci Tri Power, .068 cam, HO manifolds, M-20 4 SPD, '70 12 Bolt 3:36 Chevrolet posi-traction, Montero Red, Parchment gut, VINTAGE AIR, PFDB, Bilsteins, F&R HD Sways, Hotchkis rear bags, Firestone Indy 500 shoes "What's the point of owning a muscle car if you can't scare yourself stupid from time to time ?" |
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#9
12-27-2012, 08:45 PM
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I did a trial fit of the 93-7 F body rear discs on my 15x7 snowflakes.
1/4 inch spacer or 2 minutes with a file on the caliper fins and it was good.
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Everything comes and goes Pleasure moves on too early And trouble leaves too slow |
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#10
01-01-2013, 12:46 AM
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I will follow the rest and say Hydro-boost. I needed that when I had my Pontiac 400 installed in my old 80 Formula. The brakes were horrible due to the lack of vacuum pressure. My present SBC combo gives me plenty of vacuum. However, once I install that 400 in this car( I still have it on an engine stand- will rebuild it ) I will get hydro-boost and love the 80 pickup idea.
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Lean, Mean and GREEN |
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#11
01-01-2013, 02:10 AM
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Quote:
 You can also install 11 inch rear drums.
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#12
01-01-2013, 03:27 AM
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Wouldn't some '78 B-body spindles with 12" rotors be pretty much a direct bolt-on upgrade, used with the 1LE aftermarket replacement rotors to get the correct bolt pattern? Maybe not the best but certainly much more affordable than aftermarket 12" brakes and a sure fit with 15" plain steel and Rally II wheels since the B-body cars were factory equipped this way.
Do the later B-body spindles directly interchange with the 2nd-gen F-body spindles? I know that either one can be used as a tall spindle conversion on '64 -'72 A-body cars because I've used them both on one of my '64 A-body cars. I would imagine the B-body spindles would be an easy swap onto a 2nd-gen F-body. |
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#13
01-01-2013, 05:27 AM
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1LE upgrade.....I have this on my 71. I bought the spindles new from GM (they have the ABS sensor set up i nthem so obviously late model stuff works). I'm told GM has discontinued these spindles as a new part. I used Wilwood GMIII alloy calipers that use the D52 pads as per the stock caliper.....I had to file a little off the caliper and run 3mm spacers to clear the rally 15x7 wheels, so obviously the GMIII is not exactly the same dimentio nas a stock caliper, which will fit without clearance issues.
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Regards, Leigh Pontiacs I’ve owned…. 1960 Laurentian 283 1963 Laurentian 283 1976 Trans Am 400 1977 Trans Am 400 1951 Chieftain Flat head 6 1967 Firebird 400 convertible 1967 Firebird 400 coupe 1979 Trans Am 403 1971 Formula 455 (clone) 1969 Firebird 350 1968 Firebird 428 manual. Sydney, Australia |
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