whats a good way to get some more k's out of my tank

[benny999]

ok i have a vh sle 308 commodore stock down to the ground except for the carb which is a holly i don't know how you tell what model it is 3 spd auto lsd 3.08 i think the ratio correct me if im wrong think i em

i was just wondering what would be a good way to get some more k's out of my tank currently sitting about $20 per 50ks and about 45k's of that is highway driving so a bit shocking and thats taking it fairly easy so i was thinking of getting rid of the holly sticking the stock back on the quardra jet do i need a new manifold to put the stock back on or any other little things on would a new dizzy do anything just been looking at them on ebay nice shiny red ones ..(hahaha)

Thanks

[Tom_1569]

It would depend on what manifold you've got on.
But i would be getting a rebuilt quadie from suescarby (on ebay) they are simply amazing how good the quality is. Your dizzy should be fine for fuel economy, just give your car a major service, plugs/leads/coil.. oil, filters, tune. Check tyre pressures.
Also other things that can improve economy, exhaust, extractors, thermo fans. Theirs a heap of things you can do to improve economy, thats just a very basic list.
I recently replaced my carby with a rebuilt one from suescarby, i dont have exact figure yet caus i havent had to fill up yet, but i was getting around 18.33 litres/100kms... and i recon i would be around 11 atleast now. All i did was carby, oil/air/fuel filter, and an oil change, and a new clutch cable so i stop revving the crap out of it everytime.

[UNKNOWN]

Damn, buy a fuel injected car man!!! Holley would be suckin a fair bit. Just make sure its serviced properly. Holley carb usually just has a spacer so it should swap straight over!

[starfire vc]

hey mate

just make sure your car is good mechanical condition..all the small things ad up eg plugs,ignition leads,etc. make sure your wheel alignment is all sweet tires are at correct pressures. doesnt sound like much but every little thing ads up in the end.

id say if your chasing better economy over power. put your standard carb on.holley's just love pumping in the juice..after all it's a 5 litre.

good luck with it mate

[benny999]

talk about sucking juice i can hear it suck in the air and fuel when i step on the peddle about half (to me im like oh there goes about $10) but thats what you get for liking v8's .. did have a ford zj 302 before was pretty good on fuel considering half what the commo i reackon but that caught fire when i was driving in it out a friends drive way .. my first car next day got a vh commo wagon 173 4 spd manual at the end of it's life with me it was blowing blue smoke when it started and was just falling apart but i did do jumps massive skids jump the clutch and brakes hit the revs and smoke those babys up .. went throught about 20 tyres on it then i took it to pick a part for $200 (they picked it up) then i got this car from a family in epping ultimate nannas car lol looks a lot better now though

[benny999]

oh also whats a good pair of extractors for it thinking of putting twin pipes on it 2 1/4 is good right?

[tigervh]

Working on a price of $1.50 a litre your fuel consumption works out at 26 litres per 100 kilometres. Something is seriously wrong with your car. On highway cycle a 308 should use around 16L per hundred k's. I would suggest looking at the condition and tune of your carby, also check the condition of your cam valve train and valve seats. The advance mechanism on the distributor can seize up. Check that the choke isn't sticking either.