4.6 2v power a little low??

lwarrior1016

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Thats what i thought, really as long as you can keep the heads and intake flowing these 2v love compression. The higher the better

Thats why mine is 12:1 and I just helped a buddy do a 13:1 to build. The sound is like no other! lol
 

96blak54

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10.5 is low compression. And runs ok on a stock tune. Any higher needs a good dyno tune.
 

Nighttrain

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10.5 is low compression. And runs ok on a stock tune. Any higher needs a good dyno tune.
[MENTION=17007]RichV[/MENTION] this is the guy to talk to, the rest of us dabble in the compression pudding while [MENTION=14727]96blak54[/MENTION] baths in it.
And blak, yes 10.5:1 is low that is why i stated messing with deck heights. Im not sure he is ready for squish talk, and head deck heights, and so on "oh wise master"


Hehe
 

96blak54

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My last post there was a quick, in a rush type post. I wasnt trying to correct you or anyone.

Ive been so busy lately!!!! I feel my post quality is going south.
 

g36 monkey

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You're on the money there. That's why my V6 gave the PI cars a good run :)

226/245 minus the weight.
 

Nighttrain

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My last post there was a quick, in a rush type post. I wasnt trying to correct you or anyone.

Ive been so busy lately!!!! I feel my post quality is going south.

Hey, i know how you feel. Been so busy at work i cant do the research and development, post (try to help as much as i can while learning as much as i can) that i want. Now if i was only independently wealthy.....
 

96blak54

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Income straight to my pockets. Thats how business goes! So....just deal with it
 
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RichV

RichV

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260 is the HP limit for CMC, so that's all he needs to get to. At the tires of course.

So then if you're starting with a bone stock 2v PI 4.6, allowable mods are:
-CAI (not in the fender)
-LT headers
-any exhaust
-timing adjuster
-adj FPR
-must retain stock compression

No tuning allowed, can it be made to make 260?
 

96blak54

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Take the cams out and hand stone the opening ramp on the exhaust lobes.....lol. Should bump hp up a little. Also solid lash the intake valves. Heck....pull the heads off and lap the valves in real good will bring in 10hp
 

Nighttrain

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260 is the HP limit for CMC, so that's all he needs to get to. At the tires of course.

So then if you're starting with a bone stock 2v PI 4.6, allowable mods are:
-CAI (not in the fender)
-LT headers
-any exhaust
-timing adjuster
-adj FPR
-must retain stock compression

No tuning allowed, can it be made to make 260?

Is this a street car as well? Only mods that can be seen? If you can do an adjustable fpr can you do a pump and injectors? Do theybdo a compression test? Lol not saying to cheat but......what they dont know dont hurt em lol. Doing a slight cam regrind and solid lash adjusters like blak suggested would give you a noticable increase for a factory set up.
 
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RichV

RichV

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Is this a street car as well? Only mods that can be seen? If you can do an adjustable fpr can you do a pump and injectors? Do theybdo a compression test? Lol not saying to cheat but......what they dont know dont hurt em lol. Doing a slight cam regrind and solid lash adjusters like blak suggested would give you a noticable increase for a factory set up.

Dedicated race car. You can do pulleys as well.

Usually nothing is checked for legality, you need a dyno sheet each season. You can get protested and sent to the dyno. At national events, they may check compression, but it's rare. Cheating to make the allowable #s or cheating to give yourself an unfair advantage is different IMO.
 

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