P&P 3.4L DOHC Heads

[DMotorsports]

How does an extra 47 cfm sound? If you say HUGE GAINS, you're right!

These DM Ported heads are not just P&P'd but throated and then dyno'd to ensure the gains. I couldn't believe when I installed them. BIG high end gains. Origianlly deisnged and tested by IRL designers and now available to everyday speed fanatics like us!

Asking $275 with core. $375 without.

DMotorsports

dkov@pacifier.com
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[SappySE107]

RE: P&P 3.4L DOHC Heads

where am I going to get a cam to even use part of those gains? You don't have any real gains until over half the stock cam lift. Also, why so cheap?

[DMotorsports]

Custom Cams are available as well.

Thanks for pointing out the typo... that is WAY to cheap! That is the EACH price per head, not the set.

Sorry about that.

DM
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[SappySE107]

so you are saying we can get .550 lift out of a set of cams to take advantage of those heads? Im just wondering on the cams, not regrinds? Still has the cam flats?

[DMotorsports]

Depending on what your intentions are... you may not want 5.5 out of your cams... Huge cams are great but create increased engine managment and maintenance. You probably know that.

Cams can either be reground or custom ground (w/flats). Our head Machinist builds IRL motors and knows his stuff. Of course, there's more to bigger cams than just the grind.

The point remains... you WILL see a big boost on high end power no matter where you fall.... up to 47 cfm.

DM
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[pepsi_coke]

If I go this route .. would I need to do something to my intake manifold as I heard it is restricted?

Or comlpetly something different ?

Thanks
Jay

[DMotorsports]

The intake can be a restriction. If you are looking to do a Turbo Application as we have done before, the Intake is LESS of an issue but for NA applications, you should consider it..

Extrude Honed Porting is the best as the "gel" gets to places nothing else can. It provides greater consistancy than those that port with a wand getting whatever they can reach.

In addition, port MATCHING the upper and lower intake is something we highly recommend as well. It doesn't make alot of sense to get the intakes working right for them NOT to work together.

When we do the intakes, we also recommend and provide enlarged Throttle Body work. Really improves throttle response and adds to the overall package.

So the short answer is NO, you don't NEED to... but YES, you should.

We can help.

DM
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[Guest]

ARen't stock cams under .4 lift?

So with stock cams you wouldnt' really see any gains then right?

[fathead45]

wow your still around...i remember you from clubgp and posting about doing stuff for the 3.4 and 3.8.

i kinda wish that was the price for both heads.

[DMotorsports]

Yep... was gone for a while during the racing season. It's the "off" season now so I thought I'd do a little "work" to actually show some Business for my Business. LOL!

Anyway, if I remember correctly, last year, I offered the Heads for the "introductory" price of $600 a set.

DM
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[Guest]

umm try answering my question? I will ask again in case you missed it.

ARen't stock cams under .4 lift?

So with stock cams you wouldnt' really see any gains then right?

[DMotorsports]

Stock cams are right about 4.0, in which case you'll see about a 25 - 30 cfm increase in airflow. Which is still amazing. P&P V8 heads rarley yeild more than 20 cfm. 25 at the highest.

Sorry about that... wanted to confirm my numbers.

DM
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[SappySE107]

Stock cams are .370, not what I call close to .4.

You can't run .550 lift. I mean, you could if you shaved the valve guides, found valve springs with a lot more room before coil bind, and machine the cam carriers for 37mm lifters. Forget that .550 is way too much for valve head diameter, piston clearances, etc.

At .370 lift, you aren't seeing even half of 47 cfm.

[dohcfiend]

that chart on the top, that is a flowbench chart correct?
what year heads are those?

also dm, have you seen or worked on 96 plenums? anyway it is a 3 piece plenum versus the 1 piece unit of previous years. it consist of a main plenum piece, a throttle body neck, and a throttle body.

can you fabricate a new neck piece? and what would you charge? the way it is setup is there is about an 80mm opening at the plenum and then it bottlenecks into a 64mm opening for the tb. i want a new neck made that only goes down to 75mm to match a northstar tb.

[Anonymous]

I'll be making a aluminum, mandrel bent, 3" intake arm for a 96 plenum for my car here in a few months. I could probably do one extra, PM me if you are interested.