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Head & Cam options for 2.3 Stroker

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96GSXDave

10+ Year Contributor
49
0
Feb 21, 2010
Houston, Texas
Here is my current setup to help you guys give me proper input.

1996 Eclipse GSX

I Will be using a 1G Head.
I have a 1990 block 2.3 Stroker with Eagle H beam rods and Wiseco 1400HD pistons 8.5:1.
ARP head studs and main studs
FIC 1050cc Fuel Injectors
Walbro 255 Fuel Pump
JMF Race Intake Manifold
FP HTA Green Turbo (Internally Gated)
Tial Q BOV
SBR FMIC (Short Route)
FP Exhaust Manifold
3" GM MAF
2.5" Full exhaust (no cat)
Tuning with ECM Link V3

Built Trans from Jacks with all the Evo 3 gears. Including taller 1st and 5th.
Welded center diff.

(Thats the important stuff. Hopefully i didnt forget anything)


Here is where my problem starts.
Im not sure what to put into the head or which cams to use to go best with my setup. I will NOT be reving past 7,500RPM Looking for strong low and midrange power.
Car is not a daily driver but street driven often.
 
I would assume if you want low rpm and mid power, you would want to keep the stock cams, or just get some with more duration. I think the 264's would be more up your alley then 272's or bigger.
 
Hi dave. I have a 2.0 with the hta fp green and im using 272s to max it out. You need bigger cams on a 2.3 so I would get kelford 272s since they tend to be a little bigger than all the other brands out there or just get 280s.
 
As mentioned above, strokers love a big cam. With your setup, I agree with the person above me, go with some Kelford 272's. You can get some brand new billet core K272's from Delta Cams for like $300-$350 I think, and they've proven themselves reliable and worthy.
 
Hi dave. I have a 2.0 with the hta fp green and im using 272s to max it out. You need bigger cams on a 2.3 so I would get kelford 272s since they tend to be a little bigger than all the other brands out there or just get 280s.

What HP are you at? Your maxing out your FP HTA green? I haven't found any numbers on this turbo yet.
 
What HP are you at? Your maxing out your FP HTA green? I haven't found any numbers on this turbo yet.


Currently at 502awhp... at 28 psi with a pretty conservative tune on e85. I'm planing on turning up the boost to 30 psi (after that the green just flow hot air more than likely) go to Houston and tune it with Mike and hopefully make 550awhp which is my goal.

Edit: stock 2g manifold.
 
Mike tuned my car on the dyno and it put down 330awhp with my fp green. That's also on my stock 6 bolt motor. I'm looking forward to dropping the 2.3 stroker in and seeing what it can do.
 
If you want I can send you my dyno sheet from my 2.3 stroker with FP4 cams. I also have ECMlink logs if you want to see them. I have ones showing them with a pte5031 and with an 8-blade HX-35.
 
I was looking at the FP4 cams but I thought they would be too extreme for my setup. How's the idle with those?
 
I was looking at the FP4 cams but I thought they would be too extreme for my setup. How's the idle with those?

The idle is good, I have mine set at 1000 RPM and it is a bit rough especially with the Avid Racing motor mounts. But seeing as my other car is a 1971 Chevy with a cammed 350 I'm not really used to anything smooth.

At 1000 RPM they still pull about 15 in of vacuum.
 
I just re-read my post an realized I slightly mistyped. I have FP4R cams not FP4 cams.
 
that guys fp4r's ^^^ or if you want a lil better bottom and smoother idle hunt down a set of fp2x cams. but good luck with that. i'm looking for a set for my stroker motor too :p
 
if youre running stock valve springs i would go with brian crower 272s if u go with after market springs i would go with the the forced performance 4r its made for 100mm strokers but u will need dual valve springs
 
if youre running stock valve springs i would go with brian crower 272s if u go with after market springs i would go with the the forced performance 4r its made for 100mm strokers but u will need dual valve springs

BC cams are some of the WORST cams on the market for our cars. Why recommend junk? And the 4R cams are not stroker cams. Those were the FP4's.
 
The 4R is not specifically designed for 100mm stroke motors, that was the FP3 cam which is no longer available. I was told that the 4R would work well with my 2.3 and it seems to be, I still want to put a bigger turbo on eventually because my HX-35 is barely flowing enough to really take advantage of these cams.

Also with the 4R dual valve springs are not required, FP recommends a "spring upgrade" and states that their beehive springs are good to 9k RPM. I have mine installed with BC springs and retainers and soon I will be changing to a set of Kiggly Beehive springs I have here just to be safe. I have never spun my 2.3 past 7.5k RPM.
 
I talked with Aniel @FP. He told me the 4R cams would work great with my 2.3 Stroker. I just need to figure out what would need to go in the head to maximize my setup.
 
Running 93 octane tuned at 25psi.


That is pretty much what I would spec from a 7.8:1 compression and on a tired untoched 6 bolt motor (assuming your 6 bolt has some mileage) and on 93. Ot is so hard to maximize a turbo out of 93 octane here in Texas. At 25 psi I bet u even had to pull alot of timing for it not to knock (more of the power is made adding timing).
Also keep in mind a mustang dyno is a hearthbreaker so 330 is more like 370 on a dyno jet.
If I was you I would run meth or e85 to really max out the turbo.

What FP Green you have the new one rated at 54lbs/min or the one rated at 49lbs/min?

In opinion of cams I would get the kelford 272s. Those cams scared the crap out of me the way thay performed you just dont gain top end also incredible midramge power. get the kiggly dual springs for them. :)

I would not get the 4r sure they are amazing cams on a 2.3 but with just an fp green? Not even a Holset HX 35 can flow the air that is needed to take advantage of these cams.
 
As for head work for your setup I would say a mild port and polish to the intake ports and just polish up the exhaust ports. If you have the money to spend go with 1mm oversized valves but they won't give you a huge advantage at the airflow you will be seeing.

On my engine (2G head) I just had my intake ports ported out to match the intake manifold runners and the exhaust ports were just cleaned up. I did put 1mm oversized valves in mine just in case I decide to put a 35R or larger on this thing.
 
Yeah the mustang dyno doesn't give big numbers out that's for sure!

My FP green is kinda special in a way. When I went to order it I was told to wait. That something special was coming but I couldn't know what it was.... As we know now it was the HTA green. I have the first one! It's actually a hybrid.mine has the MHI housing and a bigger compressor wheel than the one being sold currently.

Money isn't the issue. I just need to figure out what I need so everything works well together. I can't just go throwing money at it.

As far as running 93 octane I plan on buying a meth kit from snow performance.
 
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