CURTIS

As most of u know the work im doing on rebuilding a 4L EB engine, would it be possible to finish the top end and wak on a supercharger with say 4-6 psi??? will it work well with a jmm dev 5 top end and an acl race piston bottem end???

DansEdgli

You will need a different cam and preferably lower compression ratio if you boost it.
I would choose one or the other, mock work or supercharger/turbo.
JMM will likely skim the head to raise compression for their DEV 5 kit.
I'd say chuck a turbo on it. A JMM kit is $5000 anyway, you can get a turbo setup for this that will leave more room for improvement later on and have the same power to begin with. More boost, cams headwork etc will all jack your power up later on.

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SmokedEB

TURBO!!!!!!!!!, without JMM.

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EFXR62

I'm just starting a similar build to what you're doing, and i will be boosting of some sought

Supa R00

JMM cams have to tight phase angle i believe to work well on boosted cars... i think someone else will know better...

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Ghia5L

I'd do "both", not in the sense of JMM DEV kit plus Blower/Turbo, but I'd force feed the engine (first), & then fit an appropriate kit to up performance again.

JMM DEV kits are suited for NA engines.

-Dave-

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not ford

Does anyone know what the JMM DEV 5 cams specs are for a start??

If there other cams are anything to go by they actually have a large LSA to work with the stock ecu. This should still work quite well for boost if thats the case. But for the money I would just do a Wade cam if you are going the boost route.

Thanatos

From what I know, the JMM Dev 5 Cam is basically the same as the wade 1004, in 114 phase, but with more lift.


Cheers,
Dave

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FPVWEPN

ok u can have both minus the cam the dev-5 head will work beautifuly witha turbo even if its had a bit shved ur comp will still be low enough coz u got forgies yhe? the siff valve springs and bigger valves will work well but the exaust wont be enough and u can kiss those lovely extractors goodbye

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