The second generation had a better profile cam structure in The pinnacle, a cam include with ribs during its size, and gas injectors from the ingestion manifold runners.
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To be straightforward for your boosted application I would Individually would toss it all out and in shape a plenum with only one throttle - lighter, significantly less to go Completely wrong, neat but that's just me.
Wonderful customer care as always! Regardless of how huge or little of a dilemma you may have the foks at JJSmotors can provide a little something to suit your 4AGE wants.
For trumpets I'd personally Enjoy having a couple diverse lengths until you located Everything you appreciated. I could 3D print you several distinctive lengths that you might tune on the dyno to search out what labored best with the set up.
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To optimize the gains that ITB's offer you you should leave an abundance of volume in the filter to permit Every ingestion pulse to speedily suck in just as much air as is possible. This turns into even more significant having a peaky, cammed, superior RPM engine.
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Individually I might phase as much as my 272 cam. With a little more elevate and a bit more period with the appropriate supporting mods it need to get you in to the mid 160s to possibly mid 170s.
Mid variety efficiency is drastically enhanced due to velocity of the exact same quantity of air passing through a smaller sized orifice.
Purists sometimes go ahead and take tough road with N/A tuning, but the Pleasure of a screaming motor is well worth the discomfort and energy. Vehicles applying common carb setups such as aspect drafts or down drafts have experienced quite first rate filtration choices for many years but acquiring good filtration on a vehicle with specific throttle bodies (ITBs) is normally a lot more of the custom affair.
Re: ITB Conversion on 16 valve 4AGE probly must have outlined what my set up was at first! sorry.
There's lots of information available regarding how to more info port the 4AGE head so I am going to possibly give it a go myself to start.