cam change and fuel economy
#1
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Join Date: May 2002
Location: Fredericksburg, VA
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Car: '84 Z28
Engine: 350
Transmission: th2004r
cam change and fuel economy
how much of a change in fuel ecomony can i expect going from a .422/.444 lift 204/214 duration cam to a .462/.469 lift 218/224 duration cam? i don't need exact numbers but about how many miles per gallon? i don't know what i'm getting right now, i just put on an edelbrock 600cfm tonight from a q-jet(wasnt working correctly). i want good performance but dont want to sacrifice to much fuel economy.
#2
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Location: Rio Rico, AZ 85648
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Car: 1989 IROC-1
Engine: L98
Transmission: 700r4
I have a Comp Cams XE-262-H cam, 600 cfm edelcrap electric choke carb and some other junk......only thing that might improve fuel effeciency is the Jacobs Pro-Street ignition.
I get 15 to 18 mpg, but I have like no stop and go traffic b/c of where I live. Lots of highway driving.
EDIT:
I didn't read your signature until now. I have the original L69, 305. If you're running a smaller engine you should get better milage than that. I can't guess what your drop will be, but you should still be pretty decent.
I get 15 to 18 mpg, but I have like no stop and go traffic b/c of where I live. Lots of highway driving.
EDIT:
I didn't read your signature until now. I have the original L69, 305. If you're running a smaller engine you should get better milage than that. I can't guess what your drop will be, but you should still be pretty decent.
Last edited by gruveb; 12-08-2002 at 09:13 PM.
#4
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Location: Calgary, Alberta, Republic of Western Canada
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Car: 1986 Sport Coupé
Engine: 305-4v
Transmission: 700R4 and TransGo2
Originally posted by TheViper
would it be like a a few mpg or a lot? about how many mpg do you think?
would it be like a a few mpg or a lot? about how many mpg do you think?
With my mods I'm getting 15 to 16 around town.
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