Stock Block

[Cichlids]

I searched over and over again and I can't find where anyone says what the Stock block can handle for power. Reading a lot about the superchargers and I found that there is a lot of distaste about a certian vendor and customer service. Can these cars handle a blower or a turbo setup or do you have to rebuild the bottom end of the motor??? Is there any good superchargers or turbos for these Hemis, or has anyone ever used a Hennessy kit? I am new to the Hemi scene and I am just trying to dig into what I can do without blowing the motor up. Is there a good company that builds these motors long or short block (SV or not). I guess I made the mistake of thinking that SVT's and SRT's are simliar with mods, I guess I guessed wrong

[marnepup]

Hehehe...SVTs are insanely mod-able...no DXC product is, especially not SRTs (which are basically factory-modded, leaving little in the way of capacity for further improvement)...I get the impression that a blower or turbo will significantly shorten the life of a 6.1, as well as increasing the risk of catastrophic failure...there was some discussion a while ago that seemed to indicate to me that pushing anything under 6 psi might be relatively safe, though.

[Cichlids]

6psi yikes! I never knew how unfriendly modifying the engine could be. Maybe the "normal" mods may be the only way to go with these engines. Exhaust system intake and possibly porting the heads? I thought there would be a number of engine builders for Mopar engines. This is going to be quite a fun project I must say. At least the exterior and interior can be mod friendly.

[marnepup]

Hehehe...well, the stock exhaust is pretty damned good for factory...$$$-wise, it's not worth modding if you're after performance...but you can get a meaner sound. As for engine builders for MOPAR engines...well, the modding difficulties stem from DCX'x policy not to share code...more closely guarded secret than the recipe for bush's beans. Older (less computerized!) MOPAR engines would probably more than meet your modding expectations...but new ones...are depressingly un-mod-able. ~shrug~ Without spray or other high-impact (downside discussed in my last post) mods, I think the most I've heard of is 407 RWHP, a gain of 37 or so...and that was probably a multi-$k investment...

Personally, I don't think the SRT-8 gets the most out of its stock HP. I'd look at a stronger rear end, solid rear axle, maybe LSD, and wider/stickier tires before looking for more HP, if you're strictly dragging. problem is, if you do all that, you lose a lot if you end up on a road course. I don't understand chasing more HP if the car can't solidly pour the 370 that it already has into the ground. But that's just me. Stock little ole me

[Cichlids]

Forgive my ignorance but what is DCX? I wasn't planing on dragging this beast at the strip. I just wanted to get to the point when you know you are asked how much hp you running you can answer like a Rolls Royce advertisement "enough horsepower" do you know much when it comes to hennessy? I don't know if they just beef up the heads and a few other things.

It is nice to know about the code sharing policy. Bah!

[vvv90]

Originally Posted by Cichlids

6psi yikes! I never knew how unfriendly modifying the engine could be. Maybe the "normal" mods may be the only way to go with these engines. Exhaust system intake and possibly porting the heads? I thought there would be a number of engine builders for Mopar engines. This is going to be quite a fun project I must say. At least the exterior and interior can be mod friendly.

6psi on any 10.5:1 CR motor is rather normal (max 8psi.) The problem isn't the stock mill or block of the 6.1, it's the tuning and fuel enrichment GSM offered.

Currently only time will tell but there is a Turbo kit in the works (no rumor, it WILL be made, already available for the 5.7) and an ASM supercharger kit that has more reliable fuel enrichment.

The answer your 1st question though it's anyone's guess. Right now there isn't any 800+ HP stock 6.1 blocks out there. My guess is that it's VERY strong and can take 800+ easily. (With a crank/rod/piston rebuild of course) There are Hemi pistons and rods out there right now that supposedly support 1000HP but I've yet to see anyone build one.

I personally believe the best most cost effictive and reliable way to go is Heads/cam. Take it from a guy with supercharger knowledge.

I am waiting for bigger valves to be offered and go with a ported intake/Cam/Heads/Headers route. There's no doubt that these motors without being bored out can take upwards of 600HP. For $5k (my estimated future price without installation) you just can't beat that.

[srt8danno]

Originally Posted by Cichlids

Forgive my ignorance but what is DCX? I wasn't planing on dragging this beast at the strip. I just wanted to get to the point when you know you are asked how much hp you running you can answer like a Rolls Royce advertisement "enough horsepower" do you know much when it comes to hennessy? I don't know if they just beef up the heads and a few other things.

It is nice to know about the code sharing policy. Bah!

DCX is the ticker symbol for Daimler Chrysler

It sounds like you’ve found all you’re going to find from the search areas. There just isn’t any tuner available for the 6.1. At one time there were a couple of areas one could explore for SC’s, but we’ve read too many grenade stories to make it comfortable to deal with for most. There are other methods you may wish to explore. Check into what Jeremy is up to with Power Ported Performance a site sponsor. He’s a good man with a heart of gold willing to help you achieve some of your hp dreams. Here is his link.

B&G Performance Tunes: A Better Sale! Includes NEXT Day Shipping


BTW….as you did your research you should have stumbled onto Hennessey’s thread in which he had his now infamous melt down. If not here is a link to it. A forum classic. Recently another member Michael Mulligan has reported a long dispute is still going on. I’m not sure it would be worth the headaches to deal with JH…..jmho

http://www.300cforums.com/forums/srt...supporter.html

HERE WE GO AGAIN HP screwing

[Cichlids]

Originally Posted by srt8danno

DCX is the ticker symbol for Daimler Chrysler

It sounds like you’ve found all you’re going to find from the search areas. There just isn’t any tuner available for the 6.1. At one time there were a couple of areas one could explore for SC’s, but we’ve read too many grenade stories to make it comfortable to deal with for most. There are other methods you may wish to explore. Check into what Jeremy is up to with Power Ported Performance a site sponsor. He’s a good man with a heart of gold willing to help you achieve some of your hp dreams. Here is his link.

B&G Performance Tunes: A Better Sale! Includes NEXT Day Shipping


BTW….as you did your research you should have stumbled onto Hennessey’s thread in which he had his now infamous melt down. If not here is a link to it. A forum classic. Recently another member Michael Mulligan has reported a long dispute is still going on. I’m not sure it would be worth the headaches to deal with JH…..jmho

http://www.300cforums.com/forums/srt...supporter.html

HERE WE GO AGAIN HP screwing

Looks more like a fallout with the Dodge/Chrysler community. Hopefully it spreads out to the Ford (GT) and Chevy (Corvette) community too.

I think that Porting with PPP maybe the safest way to go for good sound and a slight increase in power!