I have a chevy 350 smallblock, wich cam could i use to get low fuel consumption and hi torque?

Question

H.E.I ignition, Holly 650, headers, flat pistons

H.E.I ignition, Holly 650, headers, flat pistons, HT400 gearbox, rear axel 12bolt whit diff, dont remember for shore could it be 4:11 ???, Checker A11E 1980 years model

Answer 1

sounds like you need an rv grind. i had an rv cam in a 57 chevy with a 327 and bow did it fly. try somthing like a 204/214 @ .050. i wouldnt go much higher than a 214/224 grind. then you are getting more into the higher rpm bands. choose wisely when you pick a cam. going to big is just as bad as going to little. summit racing has some great priced cams as does P.A.W. some are for around 50 bucks. your best bet is to call the cam manufacturer and tell them what you have now and tell them what you want. (fuel mileage and torque) then can provide you with the best selection for your application. Jennifer has picked out some that look like they will work perfect!! oh and make sure you break in your cam properly. usaually it will have to run around 2500 to 3000 rpm for 30 minutes. and then change the oil and filter after. (to remove metal pieces and the cam break in lube will clog your oil filter.)

Answer 2

I own a shop, and build racing engines. I could recommend a dozen different grinds, but in all honesty, NO ONE can tell you without discussing it in depth. The best way to handle this is to contact www.cranecams.com and look for their tech line number. Give them a call, and they will ask you a dozen questions, but the end result will be just what you want to know, and you will be getting the answer from someone who knows what they are talking about. Too many times I have seen people put cams in an engine, and slow the vehicle down, plus get awful gas mileage. There are other cam companies out there, but if you want to get to the facts, go to crane. Crane has designed, and made cams for General Motors as well as other Auto Manufactures. None of the others can make that claim.
As you know; it sometimes takes the use of a dyno to come up with the cam that works best for the engine build you have. They make what is called a RV/Towing grind that is designed for pulling (torque) power. The intake, carb, and headers will be major players in determining the grind that will work best. The reason I am partial to Crane Cams is; they have a patented finish they put on their cams that no one else uses. This finish is called Micronite, and will give more power over any other cam with the exact same grind. A full roller cam, lifter & rocker set up will make a world of difference. The specs on your headers come into play, as well as your exhaust system. The folks that make these cams put years of research & development into their designs, so what you get has been tested and approved, so you aren't guessing at what MIGHT work. At our shop we are asked all the time "what will make the best torque" and we go to Crane for the answer. A customer with a big smile on his/her face tells the story.
Glad to help out, Good luck!!!

Answer 3

I had an Edelbrock Economizer cam in my small block 350 years ago , I'm not sure if they still make it but it was designed for performance with good fuel economy ..
Isky Cams also makes an Econo model ...
Talk to a speed or machine shop they can probably recommend a good product , it all depends on what your looking for as far as performance Vs fuel consumption ..
The easiest way to get good economy is keep a stone or sharp object in the bottom of the shoe, of the foot you use on the throttle ...

Answer 4

I would need more information to give you the exact cam choice for your application (ie, weight of vehicle, rear end gears, what transmission 3or4 speed auto or manual, engine year). With the info you have provided I can recommend a comp cam 262 (part # CCA-12-206-2), Summitt brand (part # SUM-K1102) or Crane cam (part# CRN-100042) depending on the year of the vehicle (all are for pre-1986, which with a carburater and HEI I'm assuming it's pre-1986) All of these part numbers can be found in the Summitt racing book/site.

Answer 5

Most people when deciding to upgrade their engines look to change the camshaft. The cam is probably the least understood component in the engine. Hydraulic, mechanical, roller and hydraulic roller are the 4 basic types of cams in use today. There are IR designs as well, which only add to the confusion.

For the majority of people will just pick a cam out of the parts book, or worse still let the local counter boy make the choice for them, there is very little hope. For the people who don't want to settle, we present the following article. click link below.

cam 1.
262° hydraulic, (probably the Comp Cams Xtreme Energy 262°, with 262/270° of duration,
218/224° of duration @ 0.050 in. of lift, and 0.462/0.469 in. of lift.)

Cam 2.
Camshaft: 268° hydraulic, (probably the Comp Cams Xtreme Energy 268°, with 268/280° of duration, 224/230° of duration @ 0.050 in. of lift, and 0.477/0.480 in. of lift.)

1 is good to keep the gas miles down
2 is for towing

Answer 6

The best all around, non-radical cam is for the 66 or 67 327 cubic inch 300 horsepower cam and kit for Impala, Chevy II, or Corvette. It's an excellent low rpm to high rpm cam for torque and economy. And yes, it will fit and work good.
A cam kit includes cam, lifters, and jar of can assembly lube. Shouldn't cost a lot either. You should be quite happy with it. And it has a beautiful sound to it.

Answer 7

I would recommend a rv type grind, will give a good smooth idle and provide decent power and torque, although It takes alot more info than provided and what you want performance wise to be more specific. hth

Answer 8

Edelbrock makes a pretty good replacement cam that will wake your car up.

Answer 9

crane cams, comp cams most respectful cam suppliers can answer all your question call summitt racing

Answer 10

intake system atfermarket like AEM