EFI or Holley, which is better - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

edv8wagon · 09-14-2004, 02:36

My XF is getting a spruce up, the basics are, 200 rods acl pistons, crow cam, HM headders 2.5 zorst, 4 speed manual. The question is... Which will provide more bang for my buck. Sprint manifold with Holley 500, Redline manifold with Holley 465 or factory EFI.

deankdx · 09-14-2004, 03:07

i'm a bit bias but i would go impco or gas research straight gas on an EFI manifold cheaper to run, no polution dramas,great power still, no cold start problems. sounding better yet?

xdc351 · 09-14-2004, 06:07

Either holley option will make your car unroadworthy.

I have a 465 holley on a redline and its a constant worry. Apparently a 600 vac sec is better but i'm yet to test this theory.

An impco on an EFI manifold can make some very reasonable power figures too.

clevo400 · 09-14-2004, 19:19

i heard a 600 vac sec is better than a 465, 450, 390. don't know why. prob the saleman trying to sell the 1850 as they r very common. then the other salesman told me to use a 650 vac sec instead of the 1850 ??? mate i just used a 350 Holley 2 barrel with 61 jest and a 85 power valve and did good on a cain manifold !!!

edv8wagon · 09-14-2004, 19:51

What does a straight gas setup cost? Where does the tank go in a ute, I don't want to lose any load space so in the back is out of the question.

edv8wagon · 09-14-2004, 20:08

Quote:

Originally Posted by edv8wagon

What does a straight gas setup cost? Where does the tank go in a ute, I don't want to lose any load space so in the back is out of the question.

Ok that was a silly question, I rang The Gas Man, $1850 to fit and the gas tank replaces the petrol tank.

How about a turbo setup on gas? is it easier? what does it cost?

xdc351 · 09-14-2004, 21:29

Generally if your going straight LPG they remove the pertol tank and run it underneath behind the bumper, with a guard underneath.

Turbo is made much easier to get registered on straight LPG, always a good idea to contact your local rego authorities before starting work though. A low boost turbo setup would probably set you back $2000 or so turnkey.