Heads and cam in an A4

**Johns00Z28** · 01-29-2008, 04:07 PM

I was wondering if any A4 guys could tell me what your car with full bolt-ons and heads/cam was making to the ground? Is it possible to get 450rwhp or would that be asking too much?

**Johns00Z28** · 01-29-2008, 04:15 PM

I forgot to mention that I'm talking about a moderate cam, not the most extreme as drivability is a must but it doesn't have to be too tame either.

**nhraformula** · 01-29-2008, 04:30 PM

450 rwhp with a moderate cam isnt going to be easy.

**Johns00Z28** · 01-29-2008, 04:36 PM

Well with a nice set of heads and a decent cam, would 420rwhp be reasonable?

**Bottesini** · 01-29-2008, 04:45 PM

Originally Posted by Johns00Z28

Well with a nice set of heads and a decent cam, would 420rwhp be reasonable?

I think that is a very attainable number, 450 is just hard with a mild cam. It is not impossible, but difficult from what I have noticed with a heads/cam car. I would even risk saying 430 is a very easily attainable number. Remember though, it is not just the peak power that will make you go down the road fast, but the complete power curve.

**Johns00Z28** · 01-29-2008, 05:24 PM

Yeah similar torque numbers too would be great. Are there any cams that can get you similar hp and torque numbers?

**Bottesini** · 01-29-2008, 05:53 PM

Hopefully tomorrow I will have a good answer for you when I get my car back from its cam install. I am not expecting a huge gain maybe 30-40 with the cam I choose, but I think it will give a good strong curve and still be streetable. Granted I still need heads but I should be doing fairly well.

**Johns00Z28** · 01-29-2008, 06:10 PM

Yeah man keep me posted.

**02ls1ram** · 01-29-2008, 08:16 PM

i am looking towards 450rwhp but i haven't made my mind up on want set up i want there is way too many options

**Frost** · 01-29-2008, 08:25 PM

you will need an all-out setup, ported and milled AFR or TFS heads (yes, you will have to flycut your pistons to get the compression up and still fit that cam in there), lightweight rockers, ported fast 90 intake, fairly aggressive cam, very free exhaust. That's enough HP to run well into the 10s with a decent 60' through an A4.

**FuhBreezeE** · 01-29-2008, 08:58 PM

403/436 with a 3200 stall, Stg4 A4 and a moser 12bolt.
This is with a 224/230 cam.

**Johns00Z28** · 01-30-2008, 10:36 AM

Originally Posted by Frost

you will need an all-out setup, ported and milled AFR or TFS heads (yes, you will have to flycut your pistons to get the compression up and still fit that cam in there), lightweight rockers, ported fast 90 intake, fairly aggressive cam, very free exhaust. That's enough HP to run well into the 10s with a decent 60' through an A4.

That seems like a lot of work and I'm guessing a lot of money. Maybe a stroker shortblock would be a better way?

**Johns00Z28** · 01-30-2008, 10:45 AM

Originally Posted by FuhBreezeE

403/436 with a 3200 stall, Stg4 A4 and a moser 12bolt.
This is with a 224/230 cam.

Would that be considered a moderate or an extreme cam? What gears are you running? Was that on the stock heads too?

**nhraformula** · 01-30-2008, 11:52 AM

Originally Posted by Johns00Z28

Would that be considered a moderate or an extreme cam? What gears are you running? Was that on the stock heads too?

above is a moderate cam.
he has aftermarket heads on there, heres his mod list,

Stg IV a4, Fuddle 3200, whisper lid, PS Lt's/TD's/SLP Resonators, Patriot Stg II Heads, Comp 224/230, fast 90/90, Moser 12bolt/373's, BMR PH, Tq Arm, LCA's, SFC's, UD Pulley, HPTuners, 403rwhp/436rwtq....

**Johns00Z28** · 01-30-2008, 12:04 PM

Originally Posted by nhraformula

above is a moderate cam.
he has aftermarket heads on there, heres his mod list,

Stg IV a4, Fuddle 3200, whisper lid, PS Lt's/TD's/SLP Resonators, Patriot Stg II Heads, Comp 224/230, fast 90/90, Moser 12bolt/373's, BMR PH, Tq Arm, LCA's, SFC's, UD Pulley, HPTuners, 403rwhp/436rwtq....

That sounds like a pretty stout setup. That's definitely the direction I'd like my car to head in. Can anyone tell me about aftermarket heads? I see he has patriot stage II heads, how do they compare to the different stages of ported LS6 heads? Also, why are heads from AFR and ET performance so much more expensive? Are they really that much better or are you just paying for a name?

**Frost** · 01-30-2008, 12:29 PM

Not gonna get into cost discussion over heads again in this thread too

However, I have tuned wuite a few auto in the range of 400rwhp, and on good drag radials and cutting good 60's they have gone as low as 11.20s-30s at 118-121 MPH and average mid and a little higher 11s on less than perfect launches. From this point, a 150 hit puts them in low 10 second territory.

**john5632** · 01-30-2008, 01:12 PM

A4 TSp stage 2.5 5.3 heads tr224/112(small)cam ported fast 90
417rwhp 407rwt(corrected) uncorrected it 424rwhp

I will be stepping it up witha larger cam here soon

**Bottesini** · 01-30-2008, 02:46 PM

Here are the results from my little 226/228 .585/.588 lsa 112

**juiced99ws6** · 01-31-2008, 07:04 PM

I made 398 rwhp with my converter unlocked and a 12 bolts rear with 373 gears in it. I have a 230-236 cam on a 114 LSA. That was also while being dynotuned so on top of it being 90 degrees in the room it was my 6th straight dyno run without cooldown time. 420 is definatly obtainable.

**Zboner** · 01-31-2008, 07:32 PM

i was going to say if you didnt hit your goal #'s throw in some N20 to solve the problem. i think you would find yourself happy with 400rwhp that can hook and just not spin em.