Stock Cam or B Cam? Systemax or TF Street Heat? I'm fighting mismatched parts! - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 14 Old 07-05-2011, 03:26 PM Thread Starter
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Stock Cam or B Cam? Systemax or TF Street Heat? I'm fighting mismatched parts!

Hey Corral,
I just got done building a little stock shortblock 302 budget build and am planning on buying the base On3 kit sometime this month, as the car sort of sucks the way it is now (304/316). My issue is mainly mismatched parts. I have ported Windsor Sr. Heads and really don't want to pull them off to cut my pistons. There is a B cam in there now that clears with the 2.02/1.60 valves, but the power band sucks, as the cam quits a little after the heads start making power. Not helping anything is the TF Street Heat intake which has the same issue as the B cam as far as rpm range goes. When I go turbo would it be worth picking up a stock HO cam and a Systemax intake and ditching the C/I that I have on there now? I'm just trying to solve the issue of mismatched parts. If it helps, the heads have 200cc intake runners 64cc combustion chambers and exhaust ports. They flow about 300cfm (intake). Any advice is appreciated, as I can't seem to find ANY 302/EFI/turbo combos that have used Windsor Sr. Heads!
Thanks,
Bob


For Sale: 89' Hatch: Built for AutoX. Put 311/324 to the ground.
For Fun: 2003 Mitsubishi Lancer Evolution. Built motor + 22lbs on a Gt35r = 450awhp
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post #2 of 14 Old 07-05-2011, 04:32 PM
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A stock cam will have a lower powerband than a b-cam will. Why not retard the cam you have and look for a short runner intake? A turbo will bring the steam either way on the topend.

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post #3 of 14 Old 07-05-2011, 05:40 PM Thread Starter
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I guess in retarding/advancing the cam I have now, I'm worried about PTV. Would it be worth the hassle to ditch my Street Heat for a Systemax and just keep the B Cam in there?

For Sale: 89' Hatch: Built for AutoX. Put 311/324 to the ground.
For Fun: 2003 Mitsubishi Lancer Evolution. Built motor + 22lbs on a Gt35r = 450awhp
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post #4 of 14 Old 07-05-2011, 08:03 PM
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leave it the way it is, the boost will cure all

-92GT 3.55s, cut springs,MT drag radial, stock h/c/i airbox [email protected] on a 75 dry shot
347 bare block collecting dust, On3 install in progress
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post #5 of 14 Old 07-05-2011, 08:58 PM Thread Starter
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I suppose I will do that... The cam is my main concern. How much boost does one usually run on a HCI combo?

For Sale: 89' Hatch: Built for AutoX. Put 311/324 to the ground.
For Fun: 2003 Mitsubishi Lancer Evolution. Built motor + 22lbs on a Gt35r = 450awhp

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post #6 of 14 Old 07-05-2011, 09:05 PM
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I wouldn't change your combo. If your car responds to the On3 turbo like my car did you will have plenty of torque. My MP70 starts to spool about 2500 rpm and will reach 9psi (I am using an MS to control boost) by 3000 rpms.

92 Hatch On3 Turbo, T56
92 Vert 349 Lunati Stroker T5
87 Gt Eddy HCI T5
87 Notch in progress
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post #7 of 14 Old 07-06-2011, 01:23 AM
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Are you saying the car makes 304rwhp now? Got a graph? I'd like to see the curve, I don't think 304rwhp sucks at all. Ran it at the track yet?

Scotty we need more power!!!
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post #8 of 14 Old 07-06-2011, 06:42 AM Thread Starter
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Yep, that's what it made NA. Here's a graph. The thing runs outta steam before it hits 5700.

For Sale: 89' Hatch: Built for AutoX. Put 311/324 to the ground.
For Fun: 2003 Mitsubishi Lancer Evolution. Built motor + 22lbs on a Gt35r = 450awhp
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post #9 of 14 Old 07-06-2011, 06:46 AM Thread Starter
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Also, I didn't take it to the track yet because I just ripped all of the drag stuff off and put road race suspension on it so it's stiff as a rock. Ooh, and I will most likely grenade my transmission

For Sale: 89' Hatch: Built for AutoX. Put 311/324 to the ground.
For Fun: 2003 Mitsubishi Lancer Evolution. Built motor + 22lbs on a Gt35r = 450awhp
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post #10 of 14 Old 07-07-2011, 01:15 AM
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Looks like solid power and a nice curve to me. I'd probably not want to go much past 5700 anyway with the power it'd be making on a stock block. I'd just slap a turbo on, tune, and have a blast.


Scotty we need more power!!!
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post #11 of 14 Old 07-07-2011, 01:39 PM
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The turbo will make ur topend way sweeter. Hell I beat a crotch rocket with iron heads. I beat alot of other cars with a stock intake and iron heads. The topend will be there. Leave the B-cam or swap it for an F-cam. I started with 12psi off the tops, but I was also on e85.


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post #12 of 14 Old 07-07-2011, 04:19 PM Thread Starter
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Thanks for the advice guys!

For Sale: 89' Hatch: Built for AutoX. Put 311/324 to the ground.
For Fun: 2003 Mitsubishi Lancer Evolution. Built motor + 22lbs on a Gt35r = 450awhp
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post #13 of 14 Old 07-08-2011, 02:16 AM
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Leave it alone, the B-cam, intake and heads are fine. Keep it under 5700rpm and hang on. Put your money towards a better 5spd. You will have gobs of torque.

92 Titanium Frost LX
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post #14 of 14 Old 07-08-2011, 08:33 AM
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If u want less tq and more hp I suggest an F-cam or a Trickflow stage 1.


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