When Do Things Break!!! What Hp For An A4
Thread Starter
Instructor
Joined: Jun 2004
Posts: 153
Likes: 0
From: JACKSONVILLE FL
When Do Things Break!!! What Hp For An A4
I have a 98 a4 with head/cam and 2800 vigilante converter and all the boltons. I estimate my hp around 390 @ the wheels with the converter locked. I dont know what the true percentage loss is in hp on the a4 vs mnl. WHEN DO YOU HAVE PROBLEMS WITH STOCK DIFF WITH STD SHAFTS. I HAVE A 342 LOW MILAGE UNIT AND OVERSIZE BOOST VALVES AND LARGER APPLIED VALVES(COVER) WITH SHIFT KIT. I HAVE 18X10.5 WITH SUMMITOMO 285X35X18 TIRES. WHAT ARE MY RISKS.
CAM LUNATI 221/221 558/558 W/112
STAGE I PORTED AND MILLED 35TH 243
SLP MAF
BLACKWING
B&B WITH BASSINI X AND NO CATS-PRT REAR
LS6 INTAKE
NORRIS TUNE
SLP UNDERDRIVE
CAM LUNATI 221/221 558/558 W/112
STAGE I PORTED AND MILLED 35TH 243
SLP MAF
BLACKWING
B&B WITH BASSINI X AND NO CATS-PRT REAR
LS6 INTAKE
NORRIS TUNE
SLP UNDERDRIVE
Last edited by ANTHONYCORVETTE; Mar 2, 2006 at 02:53 PM.
Le Mans Master
Joined: Feb 2004
Posts: 8,629
Likes: 16
From: York PA
Depends on how you drive of course. I went thru two stock trannys with shift kits with only 330 RWHP. Looking back I think, all the manual shifting did them in. Now I have a PRM (Rodney) trans, he is on the vender list bottom left. If I where you I would start saving for other tranny. Just in case.
I like the RPM tranny!!!!! It shifts really fast and strong
Oh yea don't manual shift hard to often.
I like the RPM tranny!!!!! It shifts really fast and strong
Oh yea don't manual shift hard to often.
Thread Starter
Instructor
Joined: Jun 2004
Posts: 153
Likes: 0
From: JACKSONVILLE FL
When I had mine tuned I had the line pressure lowered due to it shifting too hard. I put the larger applied valve(cover) and oversize boost valve with a shift kit and deleated the shaft ball on the snout of the tranny. All this with the tune caused it to shift too hard under normal driving. normally when I "run" the car I leave it in drive and not manual shift. my tranny came from an 03 c5.
Team Owner
Joined: May 2003
Posts: 23,480
Likes: 9
From: East Meadow NY
St. Jude Donor '12
Originally Posted by ANTHONYCORVETTE
I have a 98 a4 with head/cam and 2800
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SLP UNDERDRIVE
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SLP UNDERDRIVE
Chris
Safety Car
Joined: Jun 2004
Posts: 4,353
Likes: 22
From: Bella Vista Ca
Very hard to tell.... I've read post of people with your Hp level last a very long time. If your tires hook up things will break....Normally staring with the A4 tranny. Nice to see someone from Jacksonville on here 
Le Mans Master
Joined: Aug 2003
Posts: 7,188
Likes: 1
From: New Blue 9.80 @ 142MPH stock motor
St. Jude Donor '03-'06-'07-'08
I would add a DTE brace. You may still break but this significantly helps strengthen the setup. Most cars that start increasing the Horsepower add one. A good investment.
Burning Brakes
Joined: Dec 2003
Posts: 1,074
Likes: 0
From: Dallas (Go Cowboys!!!) :) Tx
Originally Posted by asmokegars
I would add a DTE brace. You may still break but this significantly helps strengthen the setup. Most cars that start increasing the Horsepower add one. A good investment.
And I must say they are great guys to deal with.
