Juzzyprox

Anybody with experience on holden straight sixes, I'm planning after p plates to setup a strong 202, but unsure of what route to take.
No to turbos so that leaves supercharged or NA
I dont want to convert to a v8 but i want a lumpy motor my questions start:

Can you have big cam i.e. 44/83 with a sc14 supercharged setup or would that not work?
I want to go supercharged for power, how much power does a sc14 supercharged 202 get anybody know, figures?

If i cant have a large cam with a supercharger i might have to go NA, whats a decent power output in rwhp or rwkw for a naturally aspirated 202?

And i'm on Lpg gas, does this limit my choices in cam's or forced induction in any way? If so i might have to convert to petrol.

Any inputs appreciated

Cheers - Juz

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Heaven is only a straight six with twinpipes away..

BossHoggett

SC14s are for 1.5 an 2 litre shitboxes and have no place on anything more.

pro068

Is it going in your HJ?? If it is your going to need some power to get it up and going.
Just get a yella terra head, nice cam to suit your gas and a good exhaust system.
It's never going to be a world beater in the HJ but in an LJ it would be a different story.

Juzzyprox

Yea, im not looking for a drag car, just somthing with a bit of tourque thats why i wanted a roots supercharger, want a bit of pull in my seat, and a nice grumbly note for cruising.

When you said cam to suit LPG, will i still be able to run a big cam? And LPG is bad for performance on duel fuel correct, if i go straight gas and get some sorta gas carby is the power on par with petrol?

I was thinking blue head with starfire rods strong internals etc, huge cam 44/83ish, ive already got extractors and 2.5inch straight through system,
Do i have to use gas carbs? or can i go duel or triple carbs? or a 390 holley or somthing?

Bosshogget im aware there off tiny toyota engines but from what i've seen they seem to go alright on a 3.3.

Soz for all the questions, just mulling over all possible idea's to put together one angry six.

__________________
Heaven is only a straight six with twinpipes away..

pro068

Not sure on cam, I'm sure someone on here does.
Not a big fan of gas so I'm no help to you there either.
Sorry

Smitty2

I had an LJ Torrie with a 202 in it..(plus 60 )
it made with a few mods...222rwhp @6800
(guessing this around 280hp at the fly)

It ran low 12s at around 118 when i ran it at Calder
..so yeah, it was a bit grumbly round town

so go the NA route

BossHoggett

Have a go then.

LX8VD77

i have 1 on my hatch havn't been beaten by many 5.7litre commodores the blower on mine is good till 5500rpm then runs out of flow and flicks the belt off don't know the cam but its not too lumpy it ran a 13.4 down the quarter spinning till 3rd its a cheap and easy option compared to stroking and huge cams but i get 4ks to the litre cruisin and 70ks to 50litres flat out

BossHoggett

.....please......engine size, boost pressure or overdrive, fuel quality, Intercooled or non, but id say none by what youve already said.

Im suspecting a max of 6 lbs. on a 186.....and you've wound the timing back to **** all to control the pre ignition, which reflects the economy

so mister whats the real truth.

LX8VD77

hey man chill i'm just letting the guy know what mine does FYI its a 202 its gets 12psi off idle to 5500rpm, pulley sizes are approx 150mm engine 70mm blower, blower type sc14 decomped pistons copper head gasket ported 9 port head roller rockers larger valves turbo cam solid lifters jp oil pump baffled sump running a 350 holley #60 jets mechanical pumper as for ignition was a running points had the timing wound anti clockwise till the vaccume advance hose was touching the block run it on 95% crap from caltex no intercooler as its a draw through setup and extractors to 2 1/8 pipe through hotdogs thats the real truth not the most reliable not the fastest not the slowest not a v8 got the quarter time on 98%octaine. the cars off the road at the moment for a rebuild give us yell next time your in perth can see for yourself the kit is a modified CRS version hope that helps

NOS440

about the supercharger on p-plates. it is not allowed. dont forget that

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I see stupid people everywhere. Some of them are so stupid, they don't even know they're stupid.

Juzzyprox

Yer i know, ur not allowed anything on p-plates, thats why i said in the first post "I'm planning after p plates to setup a strong 202"
I'm just planning until then, sussing out all the options :P

__________________
Heaven is only a straight six with twinpipes away..

NOS440

ahhh, me so no read too good early in morning

__________________
I see stupid people everywhere. Some of them are so stupid, they don't even know they're stupid.

PRO-GMH

A holden 6 is never going to be a weapon in your car.

You could have an absolutely mental 202 and get approx 280-300hp @ flywheel but itll be a bitch around town and foul plugs unless you're always going flat out (racing).

When compared to what you 'could' have, torque is going to be miniscule and so is power. You can get a reasonably stock 5 litre to make the kind of power your crazy six will.

Why have you ruled out turbocharging? I hope you're not an old knucklehead set in your ways that turbo's are for 4 cylinders and rotaries, itll be the best bang for buck you can get on your little 6.

NOS440

so true. look at any skyline or vl commondore

__________________
I see stupid people everywhere. Some of them are so stupid, they don't even know they're stupid.