Re: Hydra Rev kits(question)
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Burning Brakes
Joined: Oct 2001
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From: Tracy California
St. Jude Donor '05
Re: Hydra Rev kits(question)
Anyone know of or ever here that they make metal? My builder told me that the springs move around on the Aluminum bar and creates little flakes of metal in your oil.
Any comments? can you get 6800 7000 out of a hydraulic?
KM
Any comments? can you get 6800 7000 out of a hydraulic?
KM
Instructor
Joined: Aug 2001
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Re: Hydra Rev kits(question) (88-406)
I installed mine a few weeks ago and I can see that happening. The retaining bar is very soft aluminum. De-burring the bottoms of the little springs might alleviate some of the problem(if it is one) :confused:
Safety Car
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From: Jacksonville Fl
Re: Hydra Rev kits(question) (7xchampcar3)
Mine has little seat pockets in the aluminum bars, I never had a problem with al flaking from it. Mine is from Schneider Racing though...not the hydra rev brand.
And yes, you can EASILY get 7000 RPM out of hydraulic rollers. But you need at least a 230ş duration cam with healthy lift ( IE: a LPECrap 219 cam just aint gonna do it ). The stock lifters are not that good for it either, get the hi-perf stock replacement HR lifters from speed-pro/sealed power.
And yes, you can EASILY get 7000 RPM out of hydraulic rollers. But you need at least a 230ş duration cam with healthy lift ( IE: a LPECrap 219 cam just aint gonna do it ). The stock lifters are not that good for it either, get the hi-perf stock replacement HR lifters from speed-pro/sealed power.
Race Director
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From: College of Charleston, SC
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Re: Hydra Rev kits(question) (BBA)
BBA, what cam woud you suggest for 7K with the hydrarev and Edelbrock heads? What rockers?
Safety Car
Joined: Dec 2000
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From: Jacksonville Fl
Re: Hydra Rev kits(question) (vettes rule)
I always have custom cams ground for me...never bought a generic off the shelf type like the LPE's, they just didn't work on desktop dyno.
Try this: Hyd Roller, .050" lift Int. 230ş, Exh. 236ş, Intake CL 113 lobe seperation 115, Int opens 2şBTDC, closes 48şABDC, Exh open 55ş BBDC, closes 1ş ATDC. Both Intake and Exh lobe lift is .350". Springs at 125PSI closed 290 Open. I use Harland Sharp 1.6 roller rockers. Needs big valve covers.
With a miniram or good opened up tpi system will give 440-450 Ft-Lb's torque @ 2300 RPM and keep over 400 Ft-Lbs until past 6000 RPM's. Peak will be about 5500-5800 RPM. You will need 30-35# injectors.
My last 383 had a hard time keeping traction with this, if you were in first and nailed it from a roll, you could not shift before the tach pegged 7000 RPM and hit my rev limiter at 7200 RPM by the time the trans shifted. And the trans was no slouch...had a very responsive shift kit.
[Modified by BBA, 10:58 PM 11/6/2001]
Try this: Hyd Roller, .050" lift Int. 230ş, Exh. 236ş, Intake CL 113 lobe seperation 115, Int opens 2şBTDC, closes 48şABDC, Exh open 55ş BBDC, closes 1ş ATDC. Both Intake and Exh lobe lift is .350". Springs at 125PSI closed 290 Open. I use Harland Sharp 1.6 roller rockers. Needs big valve covers.
With a miniram or good opened up tpi system will give 440-450 Ft-Lb's torque @ 2300 RPM and keep over 400 Ft-Lbs until past 6000 RPM's. Peak will be about 5500-5800 RPM. You will need 30-35# injectors.
My last 383 had a hard time keeping traction with this, if you were in first and nailed it from a roll, you could not shift before the tach pegged 7000 RPM and hit my rev limiter at 7200 RPM by the time the trans shifted. And the trans was no slouch...had a very responsive shift kit.
[Modified by BBA, 10:58 PM 11/6/2001]
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Re: Hydra Rev kits(question) (BBA)
If I used the cam you said above with the Edelbrock heads (2.02 intake and 1.60 exhaust wth a 60 cc combustion chamber), mini or super ram, 1 3/4 headers with a true dual 3" exhaust w/o cats into dual chamber flowmasters, what would you guess that would be?
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Safety Car
Joined: Dec 2000
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From: Jacksonville Fl
Re: Hydra Rev kits(question) (vettes rule)
My best guess is it would run 11's on street tires and still have a relatively smooth idle. ( I designed the cam for a low .050 overlap so as to maintain a high idle at vacuum...which computers like :) )
I would find someone with an up to date copy of Desktop Dyno and get ther goods on your particular stuff to see, as my old copy will not allow me to change much other than basic parameters. Mine shows it topping out at about 490 HP.
[Modified by BBA, 7:29 AM 11/7/2001]
I would find someone with an up to date copy of Desktop Dyno and get ther goods on your particular stuff to see, as my old copy will not allow me to change much other than basic parameters. Mine shows it topping out at about 490 HP.
[Modified by BBA, 7:29 AM 11/7/2001]