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#1 |
Registered User
Join Date: Jul 2011
Location: los alamitos ca
Posts: 33
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help looking for cam
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 |
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#2 |
Registered User
Join Date: Dec 2012
Location: Preble county ohio
Posts: 1,914
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Re: help looking for cam
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
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"DON'T TOUCH THE TRIM!!"-Early Kyler |
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#3 |
Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
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Re: help looking for cam
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. Posted via Mobile Device
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377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 |
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#4 |
Registered User
Join Date: Jul 2011
Location: los alamitos ca
Posts: 33
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Re: help looking for cam
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 |
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#5 |
Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
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Re: help looking for cam
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
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377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 Last edited by INSIDIOUS '86; 06-23-2013 at 09:21 PM. |
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#6 |
Registered User
Join Date: Apr 2013
Location: Knoxville TN
Posts: 1,170
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Re: help looking for cam
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.
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#7 |
Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
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Re: help looking for cam
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. Posted via Mobile Device
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377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 Last edited by INSIDIOUS '86; 06-23-2013 at 09:52 PM. |
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#8 |
Registered User
Join Date: Jul 2011
Location: los alamitos ca
Posts: 33
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Re: help looking for cam
i have a gear vendors overdrive kit thats been helping a lot.
im trying to keep it street legal since im in california. |
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#9 | |
Registered User
Join Date: Dec 2012
Location: Preble county ohio
Posts: 1,914
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Re: help looking for cam
Quote:
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"DON'T TOUCH THE TRIM!!"-Early Kyler |
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#10 | |
Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
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Re: help looking for cam
Quote:
Posted via Mobile Device
__________________
377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 |
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#11 |
Registered User
Join Date: Jul 2011
Location: los alamitos ca
Posts: 33
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Re: help looking for cam
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. |
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#12 |
Registered User
Join Date: Dec 2012
Location: Preble county ohio
Posts: 1,914
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Re: help looking for cam
comp high energy series cams are carb approved
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"DON'T TOUCH THE TRIM!!"-Early Kyler |
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