View Full Version : Am I crazy to want Anitlock braking system for my 800hp BB chevy?
ONDSKAN
04-22-2010, 05:55 PM
Im building a crazy chopped 1935 ford truck on a shortened 55 bel air frame and i want to know if anyone on here has an ABS system on their ride?:machine:
CamaroAJ
04-22-2010, 06:05 PM
i am putting it on my camaro. i'm useing a 4 channel set up from a '01 camaro ss.
ONDSKAN
04-22-2010, 06:07 PM
are you planning on a race set up or street?
ONDSKAN
04-22-2010, 06:12 PM
I guess what im really asking is how aggressive are you planning if you system is adjustable
6'9"Witha69
04-23-2010, 07:53 AM
I know of at least one person who has it working and a few others are working on it. One of them is a very high profile build being featured in a magazine.
https://www.pro-touring.com/forum/showthread.php?t=67660
preston
04-23-2010, 12:30 PM
Yeah I've wondered for years where the aftermarket ABS systems are- especially once I realized most fo the ABS systems until recent years were all based on a Bosch module that is not even necessarily integrated with the ECU. From what I've read the custom calibration isn't as esoteric as you might think. Some of the GTM guys have adapted the C5/C6 systems and that's changing from a 3200 lb front engine car to a 2400 lb mid engine car. I don't think these systems are as overly sensitive as we might think.
But there are enough issues with mis-matched and mishmashed braking out there that some kind of "muscle car" retrofit universal kit might be asking a bit much. Still I"m surprised there has been no movement in this area. Eagerly looking forward to ABS even though I used to say it was for pussies because in the end it will make me more confident on the road course which means faster.
Hopefully Prodigy and AME are coming up with something good. Love to see some more TC options out there as well. The Racelogic is supposed to work well but would be nice to have something that cuts spark as well as fuel and that has 3d mapping, and while we're at it is a little cheaper. A more universally adaptable wheel sensor setup would be nice too.
All I can say is...working on it.
MonzaRacer
04-24-2010, 12:20 AM
On that set up a 3 channel adapted from a early 2000s Silverado should work but remember the wheel speed has to be same front to back and you will need to adapt the Silverado rear end if at all possible.
Big issue with any of them is speed ration adapting for odd size tires. I have tried to work on the Kelsey Hayes unit but the unit is a tough one to understand.
According to my contact at KH the unit should be able to handle different size wheels but that info is very hard to obtain due to legal ramifications if someone would get hurt.
Lee Abel
AFTERMARKET PERFORMANCE
CamaroAJ
04-24-2010, 01:02 PM
its going to be a street/track car. if it doesn't work i'll just disable it but i have it since it came with the car so i might as well test it.
Bow Tie 67
04-24-2010, 01:35 PM
I know of some 4th gen racers that have had problems with factory systems while racing. I have heard it called " ice mode ", the system gets confused and completely takes away your brakes. Our club had one loose brakes coming into a fast corner, his car met armco almost head on. His car was totaled.
castine917
04-24-2010, 01:36 PM
since abs seems to have some advantages i don't think you are crazy and have wondered myself why to remove abs. rock crawling and other off-roading where full lock up is needed are the only times i can think of it as not a cost issue and worthy of removal. so why not add abs to a "high performance street vehicle"?
mikedc
04-24-2010, 02:01 PM
especially once I realized most fo the ABS systems until recent years were all based on a Bosch module that is not even necessarily integrated with the ECU.
Ask Toyota why a standalone non-integrated ECU is good idea.
Vegas69
04-24-2010, 04:01 PM
Personally, unless a system has a gazillion miles of R&D with my specific application, I'll stick with what I have.
Ron.in.SoCal
04-24-2010, 04:35 PM
Personally, unless a system has a gazillion miles of R&D with my specific application, I'll stick with what I have.
Agreed Todd. It needs to be sorted out, even for street applications on PT cars, before we put it to the track test...
Steve in SoCal
04-25-2010, 06:37 PM
This is a topic I feel is under rated in the hot rodding community. I don't know about the GM versions but, the three channel Bosch units from every Mercedes sold in the US since 1986 work extremely well and as long as you can get the correct ratio of pulse front to rear you have no issues. Use what ever spindles you like and buy a toothed wheel with the right number of teeth for the pinion and you are ready for ABS. The pump and ecm can be had at junkyards for under 100.00.
For 98% of the cars a three channel system offers the best in operation, value and ease of installation. If you want traction control then a 4 channel system is needed but for most folks with older cars the single rear channel plenty.
Steve
mikedc
04-25-2010, 09:42 PM
Why would a 3-channel deal represent a significantly easier thing to set up than a 4-channel deal?
Aside from the fact that the 3-channel ones are so common I don't see the benefit over a 4-channel. Is the setup really THAT much more difficult with the fourth channel?
Steve in SoCal
04-25-2010, 10:01 PM
"Most" 4 channel ABS are part of a traction control system, at least in the German cars I am familiar with. When you disable the traction control they revert to a three channel system. On many of the older gen III ASR that Mercedes have they are rather intrusive IF you are pushing the car. Would 4 channel be better? Perhaps but, 3 channel is still magnitudes better than nothing and it is a damm near plug and play set up.
Just as a point to ponder I was going to put a three channel system on my 1936 Chevy 1 1/2 ton. It was all stock 207 SM420 trans, I did change to 12 volt in anticipation but I sold the truck when I ran out of room.
Steve
LS6 Tommy
04-26-2010, 07:19 AM
IMO, other than for traction control, an ABS system for racing is the LAST thing a good driver would ever want. ABS by itself will not reduce your stopping distance EXCEPT if you always hit the brakes too hard & you're constantly locking them. ABS is just there to allow you to steer when normally you would not be able to with unintended lock up. A good driver can modulate his braking to avoid lockup. This is called threshold braking & will stop a car easily as short as the best ABS can without the added complication of sometimes increasing stopping distance in threshold conditions like ABS frequently does. I'm no genius, so maybe I'm wrong, but I've never seen a car stop shorter BECAUSE of ABS. I've seen cars with ABS stop shorter than the same car/driver with the ABS turned off because the DRIVER didn't have enough skill.
Don't get me wrong, ABS is a great device, especially for real-world street cars. I just don't believe in it for racing.
Tommy
Vegas69
04-26-2010, 08:03 AM
IMO, other than for traction control, an ABS system for racing is the LAST thing a good driver would ever want. ABS by itself will not reduce your stopping distance EXCEPT if you always hit the brakes too hard & you're constantly locking them. ABS is just there to allow you to steer when normally you would not be able to with unintended lock up. A good driver can modulate his braking to avoid lockup. This is called threshold braking & will stop a car easily as short as the best ABS can without the added complication of sometimes increasing stopping distance in threshold conditions like ABS frequently does. I'm no genius, so maybe I'm wrong, but I've never seen a car stop shorter BECAUSE of ABS. I've seen cars with ABS stop shorter than the same car/driver with the ABS turned off because the DRIVER didn't have enough skill.
Don't get me wrong, ABS is a great device, especially for real-world street cars. I just don't believe in it for racing.
Tommy
Tommy, I have to disagree with you. ABS allows you to achieve maximum braking at every corner of the car. Without ABS the wheel with the least amount of force on it will lock up first. I agree that a good driver isn't going to realize near the benefit of an experienced driver. I don't personally feel I need it.
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