Question for you DOHC guys.

[Screw-Rice]

I have lurked on the site for some time, and have found a lot of good information. I have a heavily modded 95 T-Bird and I have collected a good portion of parts for a PI swap (figure you guys know what that is, but if not I can elaborate). I decided that I will most likely sell everything I just bought because a Mark DOHC will give me far better power for my future goals. The years I can use are 93-96 so if anyone is selling one cheap I am interested.

I have a few questions only you guys can answer.
1) How much nitrous can a DOHC handle safely, I have been running a 125 on my SOHC for a few years with no issues.
2) How much boost is safe to run on a stock engine?
3) From what I have been told I can use forged rods/pistons from a 03/04 cobra motor and they will go right in, is this correct?
4) With a stock Mark engine about how much power would I have with say 125 shot, 90mm L-Maf, custom exhaust, shorty headers, CAI, and a fuel pressure regulator?

Thanks in advance for you help. Oh and I have a friend with a 90 Mark VII so I know I will need info on that car as well, and he blames me for getting him into the luxury hot rod world.

 

[unstoppable]

I'm selling one cheap.Third gear is out in the tranny though.

 

[MonsterMark]

I have a few questions only you guys can answer.
1) How much nitrous can a DOHC handle safely, I have been running a 125 on my SOHC for a few years with no issues. 125 shot all day. DOHC motors love the juice and boost.
2) How much boost is safe to run on a stock engine? No more than 8 psi. Ring lands are weak.
3) From what I have been told I can use forged rods/pistons from a 03/04 cobra motor and they will go right in, is this correct? Should
4) With a stock Mark engine about how much power would I have with say 125 shot, 90mm L-Maf, custom exhaust, shorty headers, CAI, and a fuel pressure regulator? We have a good MAF, 24 lbers, crappy exhaust manifolds and 2 dozen cats. LOL. Unless the CAI is in the bumper, forget it. Regulator will help especially if the fuel pump is old. With a 2-1/2 exhaust and maybe a cobra intake and a 125 shot, 360 rwhp should be doable.

 

[Screw-Rice]

Sounds good, I am pretty sure my headers will swap over so that should free up a few ponies. Is the stock MAF actually better than a 90MM, I am asking because I already have a 90mm on my car. Are there any cheap gains I can use, I dont want underdrives since I think I may do another system in my car. Hopefully I can produce enough to net me a mid 13 or so in a lighter car (I think the Mark's are around 4500lb compared to mine at about 3800 right now). Is there a preferred blower for these engines, the cobra guys seem to love the Novi 2k and the D1SC. After changing the internals I would like to be in the 500+ range and be streetable. The guys on modulardepot said it should be pretty easy, but I would like input from you guys.

 

[JoeyLincolnMK8]

i thought a lot of the cobra r's have a kenne-belle blower? if anything when im set on doing a supercharger im probably going to go with them anyway.

 

[Screw-Rice]

Would definetly like to do a roots blower, are the a lot of options? I think there is one that can be adapted from Whipple, KB might make one, and Eaton maybe?

 

[formerknown]

Kenne Bell makes a 96-98 Blowzilla for the B heads. I think the kits goes for around $3800. Eaton does not make any direct-fit B head blowers, but some performance shop allegedly was going to produce adapters for 03 Cobra Eatons to bolt onto B heads, but that never happened.

 

[Screw-Rice]

Kenne Bell makes a 96-98 Blowzilla for the B heads. I think the kits goes for around $3800. Eaton does not make any direct-fit B head blowers, but some performance shop allegedly was going to produce adapters for 03 Cobra Eatons to bolt onto B heads, but that never happened.

Looked at the KB kit and it looks like a pretty good design. It shows on a 96-98 Cobra it made 440hp/426ft with the 6psi kit. I assume just like all the others the smaller pullies are available. so I think I could hit my goal on a safe tune with a 10psi/12psi pulley. Anyone running with kit on a mark, how do you like it, drivability issues, etc. Keep in mind this will be after doing internals. My goal is to hit 450-500 to the ground and still keep it's "street manners".