help looking for cam

[losal78chevy]

hey guys i was thinking of getting a rv cam so i could get better mpg's. my friends dad has and old 60s rv with a 350 with a rv cam and he gets about 11mpg. im getting about the same with a stock 350. i was thinking if i got a rv cam and tuned the carb i could maybe get 15mpg. what do you guys think? im thinking of doing it soon since im almost done with paint and gas in socal is high. i need to get some good mpg.
any ideas

[meatwagon83]

im looking to improve mine, im about to rebuild and part of my plan is a quadrajet and a comp cams high energy 260 camshaft

[INSIDIOUS '86]

Call the cam manufacturers and tell them every detail of your truck. They can spec a high efficiancy cam for you that will fit your needs.

Some info: four proven ways to get mpg. 1: smaller engine 2: small cam=small power 3: aerodynamics.( not in a truck). 4: lightweight.
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[losal78chevy]

i was thinking of going with a summit rv cam since i was told that summit cams are made by comp or crane cams.
i was thinking of using this
http://www.summitracing.com/parts/su...make/chevrolet

[INSIDIOUS '86]

Made by crane yes. It's not going to make a lot of difference. It's about the same as a factory cam. The lifters are melling and the surfacing on the bottom isn't to great so get some nicer ones if possible. I just installed a summit 1102 kit in my other engine but haven't run it yet.
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Smaller will use less until you work the engine to hard to move fast enough to keep up. Try these
http://m.summitracing.com/parts/sum-k1100
http://www.lunatipower.com/ProductGr...?id=294&cid=86

[Rufton]

When I swapped a higher rpm, higher lift, higher duration cam to a more conservative cam, the hwy mpg remained unchanged. Both cams efficient at hwy rpm. I suppose mpg would respond to over drive w/ the milder cam.

[INSIDIOUS '86]

http://www.cranecams.com/56-67.pdf

The first five are good well. Remember though an engine is a combo. You have to change everything to make a combo that works good headers and a performer intake will help. Getting your timing set dead right will be good as well. A sharp tune on a carb that gives a good velocity helps. A 500cfm carb like a Holley will help low end and run great in the highway. A 700r4 with 3.42 gears will do good as well. After you do all that you may realize you spent more to get 18-20mpg than you would have for gas this year.
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[losal78chevy]

i have a gear vendors overdrive kit thats been helping a lot.
im trying to keep it street legal since im in california.

[meatwagon83]

Originally Posted by INSIDIOUS '86

Made by crane yes. It's not going to make a lot of difference. It's about the same as a factory cam. The lifters are melling and the surfacing on the bottom isn't to great so get some nicer ones if possible. I just installed a summit 1102 kit in my other engine but haven't run it yet.
Posted via Mobile Device

Smaller will use less until you work the engine to hard to move fast enough to keep up. Try these
http://m.summitracing.com/parts/sum-k1100
http://www.lunatipower.com/ProductGr...?id=294&cid=86

the lunati high efficiency 268 looks like a winner!

[INSIDIOUS '86]

Originally Posted by losal78chevy

i have a gear vendors overdrive kit thats been helping a lot.
im trying to keep it street legal since im in california.

So you need a 50 state legal cam? That's c.a.r.b exempt and can pass smog?
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[losal78chevy]

yep i need a 50 state legal cam.
i have always passed smog with flying colors and i would like to keep it that way. but i think maybe lunati cam might be the way to go. i have a lunati in my 383 never had a issue with that.

[meatwagon83]

comp high energy series cams are carb approved