Head upgrade

[Husker Cuda]

I have a 512 stroker that I am in the process of fixing a oil consumption problem on the bottom end and looking to possibly upgrade my stealth heads but not sure which way to go.  I already have TTI 2" headers so  I'm not real wild about heads that won't work with these headers.  The options I know of are:

Super stealth 440 source - not much known about these yet but they look to be a nice flowing head.
Edelbrocks & Edelbrock RPM's
Indy EZ
Indy EZ-1 (max wedge porting)
Indy 440 H1 high exhaust ports - TTI header problems?  Also have to have offset rockers etc.

I'm thinking hard about the EZ-1 but wanted to see what you all thought?

[Chryco Psycho]

Eddy heads would be a sideways move

[hemiken]

Hi, I would suggest you get your stealth heads ported ? I have a set of stealth heads which i just got around to doing a port job on to check flow, out of the box they are pretty good, with a little bit of work i got them to 598 horsepower, you would not have to change anything on your engine except maybe your cam and intake in your search for more power ? just a suggestion.

[Husker Cuda]

Thanks for the info guys.  I may have my Stealth's ported if I can find someone that can do it here.  Also, is there a reason why if I was buying Indy EZ heads I wouldn't get the max wedge porting right away?  I don't plan on tearing it down every few months just for something to do.  Does the M/W porting hurt the streetability of the engine?

thanks   

[Chryco Psycho]

I agree I would have the heads ported & install them once .
the MW porting will reduce velocity & response but with the stroker I doubt you would notice

[Husker Cuda]

So, next question is if I buy the M/W EZ-1's can I just match port my new M1 intake to match or do I have to buy an Indy intake?  Also Chryco will the Lunati cam you prescribed like these M/W heads?

thanks guys

[Chryco Psycho]

I doubt the intake can be ported far enough to match the heads but you could port as far as possible there would be no restriction as the heads will still be bigger
 That cam should be awesome with the EZ heads , with the high lift the EZ heads will breath far better

[Husker Cuda]

Ok, so the Indy EZ-1 sounds like the path to take.  I have seem several post saying don't buy direct from INDY as their CS sucks.  They say to buy from another shop that sells Indy products.  Any suggestions on who I should deal with?   

[Chryco Psycho]

Mancini would be first call , I would have recommended Eric @ Muscle motors but Brad has not been impressed with their service either

[hemiken]

Hey Husker, you could save yourself some money by just porting the Stealth heads. When i ported my stealth heads, all i did was take some meat out of the walls of the port and a little more out of the roof of the port and hardly touched the floor of the port at all, the window of the port is considerably larger than a standard port sized window but yet it is still smaller than a max wedge port window size, it has an excellent improvement on standard with out sacrificing lower lift. With the size of the engine you have, it is like a max wedge port is actually too large unless you get real serious with compression and turn your car in to a pure race car. So for a more than decent combo like you have, the ported stealth's would be enough of a boost in my opinion.

[Husker Cuda]

thanks for the info guys, I still may just port my stealths but want to look at all options to get some great HP.  I sent an email to Jeff @ modern cylinder to get pricing on the Indy EZ 308 port combo, that souncs very interesting!  Thanks guys!

[Husker Cuda]

hey Jason, I remember that Chally, I think I sold you a couple parts.  Anyway, I have never run on the strip but made the mistake of going to see a local meet for the first time and seen some amazing cars.  I built my 512 the first time just to have a crazy engine for a show car / cruise night beast but would not like to pump it up to at least 600HP.  I was very disappointed  with my initial Dyno run with the original setup of 475HP & 600 ft lbs of torque.  Nice torque but the HP fell off at higher RPM's.  I would like to have something that runs great on the street with some vacuum to run my power brakes but have the HP to take it to the track next season and see what she will do.  Mine is a 4 speed car so I don't expect to run crazy fast times.  I'm thinking the EZ heads with the porting and the cam Chryco suggested above, the M1 single plane intake & my new Quick fuel 950 carb should run pretty good!

Mike

[hemiken]

my 500ci chally had no problems running around on the street on pump gas at 11.12 to 1 compression with a MW port head and it was 100% a street car... it had a baby 248/254@50 mid .600's lift roller cam in it  and yes I RACED it on the junk outta the pump no mixing at all. the 10.6 it went was the only time out also on that combo in the heat with only a 1.55 60ft... did I say it had a well tuned dominator on it also...

please explain what a pure race car is though in your opinion for an "it is like a max wedge port is actually too large" ? (just curious so I understand ya better) 



husker do you have a dyno HP number in mind or a certain ET your looking for? didnt really say why ya want the upgrade! I'd make the head decision based on personal goals and wants really!

Hey Jason,

When you are committed to your cars engine as much as you are, and love tinkering on it as much as possible, your engine even with as much compression as you have, does not seem like a more racy engine, or like it has much compression to yourself. The majority of people would not go to such lengths to have so much compression and dedicate so much time to their cars engine like you do. Your engine would be what i would consider to have the right compression to run max wedge size ports, anything less and the port size just does not get the benefit of a max wedge size port. Your combo is something like i would run also, the majority of people would be concerned to run the compression you have with pump gas. So what i was saying is, with a safer compression for pump gas at around 10:1, max wedge ports would not work to there full potential.  Also did i mention, being a fellow Dodge Dart owner........... Dodge Darts rule

[Chryco Psycho]

with Quench & Alum heads 11:1 compression is easily possible on pump fuel as Jason will tell you

[Husker Cuda]

Ok, I have decided to go with the Indy EZ-1 M/W heads from Jeff @ Modern cylinder head with the .308 port volume.  Can you guys give me an approximate compression ratio for my 512 RB with .055 dished pistons & these heads?  Also can I use my Hughes racing 2 piece valley pan cover with the Indy EZ heads or do I need to use their cast valley cover?

thanks,
Mike