I have heard of some folks doing it, and would love to myself N/A. Does this require a solid roller cam or pehaps just a g5x3, lt's, 300+ cfm heads, cut out, all boltons etc? What else is needed?

 

I know Jason99T/A did it without a solid roller. Everything about his car is listed in the thread
https://ls1tech.com/forums/showthrea...highlight=dyno

 

Are you talking a 6-speed or auto? You'll need all the bolt ons, good heads, a big cam, and you'll have to get the compression up there. I don't have my car tuned yet, but if it was and had a 6 speed behind it I feel pretty confident it would break the 500 mark. I'll lose alot with my tranny, but I'm hoping for atleast 460 at the tires

 

I don't think you can do it without spinning to atleast 7K, so plan on a forged bottom end. I've never heard of a forged 346 (only 347 and 348) so I assume you're wanting this on the stock bottom?

 

Ah bummer. Yes, I am running a stalled 3600 4l60e and was hoping to utilize the stock bottom end.

 

one a stock bottom it can be done but REALLY careful, things have a habit of working oneday and the next BAM!!! no more fun!!

If you want stock cubes without forged internals get a fluxed crank and necesary parts. My recomendation is a 347-348 forged bottom end with a good set of stage II heads, high compression (11ish), big cam hydraulic (24x25x) with high lift over .600, appropriate valvetrain upgrades (springs, retainers, rockers etc.), and the needed bolt ons like full intake and full exhaust. maybe even a 90mm fast intake due to the big cam but search for threads on that......

big cfm numbers isnt as inportant as the charge velocity. the better a heads is milled, the smoother and quicker the "mixture" will flow. APE has great heads as do other sponsors--------------------------------------------------------------------->>

your looking at a heavy penny atleast 7k-8k for the motor and bolt ons......but it will all be well worth it when u get it all ready and start it for the first time.

good luck!!!

 

the tranny would hold you back a bit on dyno numbers but not that much......just aim al little higher!!!

 

you wont be able to do it very easily or at all on a hydralic cam. solid roller, no problem. FMS, TR, and LG have done it.

 

https://ls1tech.com/forums/dynamometer-results-comparisons/165913-rapid-ls6-h-c-502rwhp-437-rwtq.html

Give Mikey at Rapid a call.

 

Check the thread in the dyno section that concerned the AFR 205 heads. A lot of the people in that thread are making > 450 RWHP N/A with stock cubes and stock bottom ends.

 

its all about the combo. you dont need a huge 240*+ cam, heads flowing 300+cfm, super high compresion.

the nice thing about Tony's setup and other AFR combo's is that they are not super high rever gutless tq 500rwhp setup.

 

ill be close i bet! the 4.10's might hert though

 

what are you changing again besides cam and upgrading the heads and compression again? i dont see you gaining 70rwhp over what you already have.

 

I am "copying and pasting" this post I JUST wrote from another thread in this same section....I just thought it certainly is applicable here.

And to further clarify, the cam I am referencing is definately a hydraulic roller, not a solid grind.



Hey Guys...

My goals are to hopefully see 510 RWHP on my C5 (as most of you know already generating 480 RWHP with the AFR 205's, a 224 cam, and all the "bolt-ons").

I'm hoping to achieve this by simply swapping the heads to our larger 225's and installing the next cam in the AFR R&D pipeline which will still be somewhat on the conservative side (probably somewhere around 232' @ .050). Again, as I have mentioned in a few other threads, it's quite obvious a bigger stick will yield higher peak numbers and even more "bragging rights", but I will let the more aggressive tuners play with the more "hardcore" build-ups.....If we can achieve a "legitamate" 510 RWHP thru 3.90 gears, a stock LS1 shortblock, and a "medium" sized cam that has more overall drivability and better street manners I would say that's hitting one out of the park.

Obviously this is all just "hopes and dreams" at this point but I feel reasonably confident those numbers will be attainable with the new combination. The 225 is simply a larger version of our 205 and still retains the winning formula of strong airflow across the entire curve (VERY important) thru a modest sized port. It's gain in "volume" is also complimented by a significant increase in total flow keeping the airspeed close to the 205 while providing more peak airflow for higher HP potential.

Hopefully sometime this January we will get to see some actual results...

Will obviously keep you guys informed on our progress.

Regards,
Tony M.

 

Tony, what intake are you running?

 

its all about the combo. you dont need a huge 240*+ cam, heads flowing 300+cfm, super high compresion.

the nice thing about Tony's setup and other AFR combo's is that they are not super high rever gutless tq 500rwhp setup.[/QUOTE]


I agree that it'll take the right combo, but 89IROCZZ4's car is a A4. Your not going to see a A4 put down 500rwhp without a huge cam, excellant heads, and high compression. I'll go one step further and say that it is going to be almost impossible without having a solid roller.

 

Not going to happen. Just build a set up that will make you happy. Don't worry about a number. Good luck.

 

true, i was speaking generally and not specific to his setup. but i agree, i dont see 500rwhp happening on a hyd. roller with an a4.

 

Not in a hyd. roller a4 346 n/a, you mean.

 

im thinkin with the afr-tea ported polished 228cc heads, different cam-fm14 112lsa , compression bump to 11:1, portmatched intake, tighter quench, ill be much closer than i was