Mongo510

Hey fellows, I am curious as to the capabilities of a 0411 ecu.
Is it capable of handling the low speed running characteristics of a 349"
big bore, short stroke engine with LS3 heads?
My concern is the lack of vacuum at low engine speeds when running this cam.
Will this ecu play nice with low vacuum at idle? Do I need to go to a after market ECU?
Bore is 4.125", stroke is 3.27"

CM LLSR

Grind number is LL230/350-LL236/340-111+3

230/236 duration at .050".

Lift is .595"/ .578".

Lobe separation 111 and 108 intake lobe center line.

Thanks for any thoughts.

John

Mongo510

Anyone?
Will I be able to tune for good running characteristics at low speed
with high overlap and low vacuum at idle?

John

sho-me speed

iTrader: (55)

What vacuum numbers are you making and what numbers are you looking for? Will be surprised if that makes too much.

Can it be tuned to idle fine? Yes it sure can.

JakeFusion

iTrader: (7)

You'll have a lot more vacuum at idle than me. And I run power brakes, power steering, and an A/C at idle. I'm at 9.5" with my setup.

Mongo510

Thanks Sho-me and Jake!
I talked with my engine builder yesterday and he assured me that it would be fine. Should have talked with him first!