Drag Parachute? Do you need one with a low 10 second B body?

[JackpotJim]

Just wondering how you go fast guys with the heavy B bodies slow down at 130-135 mph? My 66 has manual disc-drums, at 120 mph I'm doing everything except drag my feet to make the turn off return road at my local track. Is it a better idea to go with aftermarket front discs then fool around with a chute and fabricating a mount?

 

[bolson6333]

I would say you need to look at your brakes. I have same disk -drum and never a problem even at short tracks.my car weighs almost 3500 race day weight and at 130 plus mph never an issue.

 

[R413]

Fool are around with safety? Have you ever had too much safety? I’d put a chute on just in case. You shouldn’t need it for every pass. How long or short is the shut down? How are others similar weight cars stopping at that track?

But this car should stop without a chute Time to upgrade the brakes. Doing a pad slap on glazed rotors doesn’t work at 130 MPH.

Call Lamb for quality racing brakes.

 

[JackpotJim]

I would say you need to look at your brakes. I have same disk -drum and never a problem even at short tracks.my car weighs almost 3500 race day weight and at 130 plus mph never an issue.

Thank you, Forgot to mention I have new front hubs, cross drilled rotors and bearings I have yet to install on this car. Also replacing the proportioning valve with aftermarket one that I can adjust rear brakes.

 

[Budnicks]

fix the brakes 1st, install 'them new parts'

it wouldn't hurt to put a chute on it too, just in case

Chutes not required by rules, until you run 'pass' 149+mph

"it's better to have it & not need it'
than to need it & not have it"

 

[JackpotJim]

fix the brakes 1st, install 'them new parts'

it wouldn't hurt to put a chute on it too, just in case

Chutes not required by rules, until you run 'pass' 149+mph

"it's better to have it & not need it'
than to need it & not have it"[/QUOT

Thank you, for some reason I was thinking 135 and above was where a chute was required.

 

[Cranky]

Ran factory 11" drums all around on a car doing 126 (68 roadrunner @ 3300 lbs or so) and could take the 1st turnoff at a track with a short shut off which was a chore for any kind of brakes. Had a car went 134 (71 Duster @ 2950) with 4 wheel disc Wilwoods and never could get that dang thing to stop well so I just let it coast down some at a track with long shut off.

used to be 135 but they had to raise it for all the fast factory hod rods that didn't want to put chutes on.

Always thought needing a chute at 135 was a bit much but I guess you don't have to pull it. My 134 car was going pretty slow by the time I got to the last turn off at the Houston track....

 

[69L48Z27]

150 MPH has been the NHRA requirement for as long as I can remember.

 

[Cranky]

150 MPH has been the NHRA requirement for as long as I can remember.

To tell you the truth, I don't remember what the rule book said since I knew I'd never need one but do remember reading up on it many moons ago.....probably read across it while in the 'office'.

 

[33 IMP]

The Nhra standard is 150mph, but individual tracks MAY require a chute at a lower speed. When Carlsbad was running in california, now closed, they required a chute at 135 mph.
Edit: and if memory serves, carlsbad mandated it's USE if you ran 135, not just it's presence.

 

[furious70]

I would never mess with a shute before working to sort the brakes.

 

[dvw]

Shouldnt have any issue stopping at that speed. NHRA chute rule is 150mph. My Belvedere regularly runs 146-149mph, no chute. Never been questioned about not having a chute anywhere. It's been to a lot of tracks over the last 8 years. Never an issue stopping, well over 700 passes. It has Willwoods on all 4 corners. My sons 63 Savoy runs slider style factory disc, Ford Explorer rear disc. 3775lbs. Stops fine from 140+mph. Actually it stopped fine when it had stock rear drum. The rear disc was an upgrade when we swapped a Dana in to it. The correct master cylinder piston diameter and metallic pads are the key.
Doug

 

[Dodge 330]

We come down from 130 mph @ 3,600 lbs. on a fairly regular basis. No issues at all. Wilwood vented front discs and 11" station wagon rear drums. 1 1/8" master cylinder for a firm feel. I did see some mention of the Wilwood Polymatrix pads providing much improved braking and plan on trying those next year.

 

[Tex013]

@ 120-122mph mine was fine with disc front 10"drum rear .
@125-127 it was not really stopping . Brake fade from the hit almost .
went to rear discs @130 now and no problems

Tex

 

[SuperBee1]

I'd add rear discs with the new front ones.
With a chute.....
Unless you pull the chute every pass,by the time you see you need it,it's to late.

 

[66Satellite47]

My '65 Coronet ran 126-128 regularly at 3550# with 10" drums front & rear. Bracket car, many rounds back to to back, no chute, no problem. My 2350# Arrow went 145-147 with Lamb discs and no chute. Slowing down with it was never a problem!!

 

[JackpotJim]

My '65 Coronet ran 126-128 regularly at 3550# with 10" drums front & rear. Bracket car, many rounds back to to back, no chute, no problem. My 2350# Arrow went 145-147 with Lamb discs and no chute. Slowing down with it was never a problem!!

Thanks, Enjoyed seeing your 65 run at Northstar. Loved that track.

 

[66Satellite47]

Ya I had many really good Mopar racers to learn from there. Harry Hodge, '69 6 Pak Super Bee, Stan Berry '67 Coronet, Don Baierl '70 440 Dart, John Thorson '69 6 Pak Runner.
Even Al Corda and Henry Brohm were there sometimes

 

[6PKRTSE]

Mine stops fine since most everything is 1/8 mile these days but it's on there still just in case. One of my favorite parts of the car.

 

[JackpotJim]

Mine stops fine since most everything is 1/8 mile these days but it's on there still just in case. One of my favorite parts of the car.

View attachment 1018519

Wow, Looks great, Thanks for posting your photo.