Modular 4.6L Tech For all your 1996-2005+ 2V, 3V, and 4V modular motor needs.

cams, cyl heads, sc, etc

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  #1  
Old 07-23-2009 | 11:54 AM
garrett01001's Avatar
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From: DFW, TX
Default cams, cyl heads, sc, etc

Trying to get my parts all in order before I get the 3v 4.6, need some answers..

I was thinking:
- FRPP hot rod cams
- forged pistons (anyone have suggestions? plan on sc'ing with edelbrock e-force)
- was looking for some cnc cyl heads but trick flow doesn't seem to have any for the 4.6 3v's..
- edelbrock e-force supercharger (planning on running 8-10#)
- slp lm's axel-back (do I need to do the entire exhaust: headers, tubes, mid, cats, etc or will axel-back be fine?)
- c&l cai/tuner from vmptuning
- 62mm tb (or would 65mm be better since im sc'ing?)
- tlok, 4.10's, 31spline rear
- cnc aluminum driveshaft


just trying to plan this out so I don't screw myself up in the end. any suggestions, pointers, tips, what to do first, etc will be helpful and greatly appreciated
 
  #2  
Old 07-23-2009 | 01:57 PM
r3dn3ck's Avatar
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From: Magrathea/California
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gunna need connecting rods. Good ones. Skip the exhaust work unless you're doing it for sound. It's the least cost effective change to make. TB won't matter enough to make the cost worth it. Skip upgrading the 7.5" and slap an 8.8" in there or you WILL frag it I promise you. TEA (Total Engine Airflow) does an outstanding 3v port job from all the data I've seen and one of the best prices in the industry (also one of the best reputations). FRPP cams FTL. Call up MMR and have them spec you out a custom cam grind from comp.
 
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Old 07-23-2009 | 03:10 PM
garrett01001's Avatar
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should have made it more clear in OP, im not swapping engines on my sixxer im getting a 2009 gt as a second car for the strip, keeping the sixxer for daily driver because it's reliable. So I won't need to swap the entire rear just upgrade it.

found some SCAT 4340 steel forged connecting rods, still not sure what to look for in forged pistons though: flat? dome? dish?

exhaust is for sound, and I was planning on doing the TB late if at all. TEA looks good thanks for the heads up.

exhaust, cai/tuner and rear-end will probably come first since I plan on building the engine all together, no point taking it apart more than once am I right hehe then after it's built I'm gonna throw the edelbrock on and wait til I blow the tranny before upgrading that
 
  #4  
Old 07-23-2009 | 09:13 PM
bassman97's Avatar
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Piston choice is dependent on the engine configuration since it determines your comp ratio. In your case, the amount of boost you want to run, as well as what octane (i'd assume 91+). I'd also wouldn't use the FRPP cams, as they're optimized for NA, not FI applications. Check out Crower's blower grinds.
 
  #5  
Old 07-23-2009 | 10:03 PM
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From: Orlando,Florida
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+1 for him.

Dome and flat top pistons will keep or raise your compression ratio based on a few different things. Not what you want with FI on a street car. You need dished pistons to drop the compression ratio down. Basically you can call Livernois or any other modular engine builder and they can handle that for you. If you have never built a motor or understand what goes on then don't bother trying to figure that all out. Let them handle it when then they build the motor for you.

You can definitely gain some power with exhaust especially on a FI car. I would atleast swap the catback and mid pipe for more sound and some power.

Like he said the Ford cams if you read their specs are for a n/a cam and not one with forced induction so those would be a terrible choice. I wouldn't even bother with heads or cams because you can make great power with just the blower. Unless your going for some super powered ridiculous street car.
 
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