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[Ecotec] Help stuck at 230kw only $2700 left in budget

Lazin

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Ok I'm putting it out there to see what you guys can come up with.

I have $2700 left to spend on her and have a few options.
I know what direction I'm thinking but would like a couple opinions.

Here is where I'm at.
4.2 come bottom end 8.2:1 comp.
Smallish cam.
Stock heads with heavy springs.
Pacemakers + System.
Ported maf and tb.
Mildly ported manifold.
Mildly ported m90 2.8" pulley over driven crank. (11psi @2000-5600rpm)
240kw @ 5000rpm
460nm @ 3300rpm

Running gear is.
Th700 St2 2400 stall
3.45 lsd. with over sized rolling diam tyres = 3.23:1

Will need retune regardless of what I do so lets call it $1500 budget, can be stretched a bit.

Problems are little M90 running very hot and cam too small.
Solution are....
#1. Bigger cam + port heads $1800 ish +9hrs
#2. Bigger cam + IC $2100 ish +7hrs
#3. Hi ratio rockers + port heads $1600 ish +6hrs
#4. Hi ratio rockers + IC $1800 ish +5hrs

So Power+reliability V work+cost?
Opinions please.
 
Last edited:

Krisp

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save on your budget with buying good second hand
 

Immortality

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intercooling is your best option. either W2A or A2A. seeing as your going for a full tune anyway i'd recommend A2A as it's more efficient and then you can run a much smaller pulley then you have on now.

also use a 82 degree thermostat and have the thermo fan on/off temps reset to suit
 

Lazin

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Thanks for your input Immortality.

Don't want to mod the bonnet so can only fit a 25mm IC under M90 so options are Yella's or Mace's small ICs, which they say drop temps around 30 degs c.

Also can't get much more puff out of little blower I would love to toss on a tvs 1900 but thats another $2k on top.

Already have Davis Craig Elec water pump and adjusted thermo to suit slightly lower running temps,

and all the other little bits like copper plugs, Walbro, CAI, so on.

P.S Because of the small cam and hot discharge temps I have a good whack of retard, so what I'm after is the mods I'll get the most timing out of.
 

Pub247

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problem solvered :p
 

Zeussy

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Two of the big ones. Just tell Harry you need them by tonight...
 
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