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TUNING TIPS FOR IMPCO 425 ON 308

IM LOOKING FOR HELP ON WHAT IS THE BEST WAY TO TUNE AN IMPCO 425 ONTOP OF A 308 WITH ACTIVE MANIFOLD RUNNING VK ELECTRONIC IGNITION STAGE 2 CAM. WHAT IGN SETTING SHOULD I RUN AND HOW DO I TUNE IT IN THE GARAGE WITHOUT PAYING SOMEONE A FORTUNE THANKS

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gas355

give me your email address and i'll send you a tune up guide that should work,
steve..

gas tune up guide

G'day Steve (hx308), could I trouble you to send an email my way please.
Thanks

(Sorry to crash your thread GAS355)

Cheers
Bruno

Shed of Wheel Nut
Email me

wheel nut

sent.
might take a while to download its 2.2meg
steve..

Received

Cool, got it :-))
Looks like a good read, lots of info, thanks for passing that on

Cheers
Bruno

Shed of Wheel Nut
Email me

425 tuning guide

Hi gas355, are you still able to pass on the guide for tuning a 425

Cheers

Warren

Tuning 308 Impco

Hi Steve, Would you mind sending me the tune-up guide to me as well please. Regards Dutchie
divinee777@gmail.com.au

tuning tips for impco 425 on 308

hey steve.
could you possibly email me this guide to.
its not an easy one to find.
thanks

mark.

thedogger@aapt.net.au

425 TUNE UP GUIDE

can you email me the tune up guide thanks romere@hotmail.com

tune up guide

hi steve just wondering if you could send me that tune up guide for the 425 impco i just cant get this thing sorted so any help would be unreal thankx heaps wayne kulmerwayne@yahoo.com

Help - Compromise Young Horse vs. Lame Duck

Newbie is
LOOKING FOR HELP ON WHAT IS THE BEST WAY TO TUNE AN IMPCO 425 ONTOP OF A 350. WHAT IGN SETTING SHOULD I RUN AND HOW DO I TUNE IT IN THE GARAGE WITHOUT PAYING SOMEONE. I got the 425 last year, put it on the original chevy manifold. The surprise was. My 1980 class C RV camper was driven like a young horse. No comparison to the time before it has the originaly Rochester Carb on it, with the LPG Ring and the Ventrui Valve. That was the positive. :)
At the other site, it took 10 liters more on 100 km distance. With the old installation 29 liters/100 km! With the "new" Impco 425, 39 liters/100 km. The Power Screw has now the original position 2,3 cm (0,9 inch) out from the washer. The IGN is 10 degrees before OT (upper deathpoint). The Spark plugs are new and i took the original gaps.
If someone has an idea to get the 425 a little more economical, please feel free to tell it me. Thanks Daniel
The LPG here in Germany is at 0,73 Euro. The Price of 1 liter gasoline 1,47 Euro.

tuning guide impco 425

Hi guys sorry to revive an old post but I was chasing a copy of the tuning info for an impco 425 also can anyone email it to me? Huge thanks

htmonaro100@hotmail.com

impco 425

Is there anyone who can email me the tune up guide?

I'm struggling to find a copy!

htmonaro100@hotmail.com

Thanks!

Impco 425

Could anyone help with tune up info on Impco 425 fitted to
Ford 351 engine

vinmackay@bigpond.com

impco 425

anyone ever get the email info?

if so can i get a copy?

weygacg@wku.edu

425 impco

Hi,anyone know what holley base plate i should fit to my impco 425?Its on a mild 351 clevo and its not very fast off the mark and pings its brains off under acceleration.More pinging on hot days.
Any ideas?????
Thanks John

425 gas mixer whistle

Can any one help?
I have two 425 mixers on a weiand tunnel ram manifold. At idle and low speed cruising the mixers have a high pitched whistle.
Does any one know how to stop the whistle?
Harry hot rod
kjo58975@bigpond.net.au

impco 425

sorry guys computer crashed and lost the info.
i first got it at www.aussiev8.com.au

steve..
O.H.T.C. Original Member.
My Shed

ford 460

whats the best set-up for a ford 460, stock form, one or two 425's? Also, if building this motor, how high should i bump up the comp ratio? I was thinking about 13 to 1.

impco 425 tuning

hi guys new here just wondering if someone could send me the 425 tuning guide, mines fitted to a 253 hx

these 425 impco's are cheap nasty [Naughty Pottyword]en crap

these 425 impco's are cheap nasty [Naughty Pottyword]en crap


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