installing a cam on a stock engine???
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installing a cam on a stock engine???
i was just curious..I have a 1970 429 with dove-c heads ..the engine runs real strong does not burn/use/leak any oil....I have always been a fan of the sound a cam makes(lope)can someone tell me if they know of a cam I can install in my engine to give it a mild lope idle with out altering too much?????thanks basically a stock engine with a cam...
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look into a comp 270 cam I run this in my 460 and didnt need new springs.It has a power band of 1500 to 6000 rpm and is the biggest you can run on a stock valvetrain.It does not lope but has a verry rough idel.It is hard to make a BB lope but will be rough and or lope a bit.A bigger cam will require a stall converter aswell as roller rockers and adjustable valvetrain.
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Understand that a cam big enough to produce a noticeable lope at idle is more cam than the stock heads can handle. In other words, it will sound great but make less power than a cam more suitably matched to the flow characteristics of your stock heads.
Brad
Brad
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????I have stock heads and the cam i used (comp 270)has a rough idel and workes really well I gained a lot of power on both bottom and mainly high rpm range.This cam was highly reccomended where i was for this motor and i love it.
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From: GA
that 270 cam sucks...especially with stock heads
sure you can throw a rough idling cam in a 460 to maek it sound good, but you will need some larger valves, stiffer springs and at least porting on the exhaust side for a good balanced setup, or you will be severly choking your motor
sure you can throw a rough idling cam in a 460 to maek it sound good, but you will need some larger valves, stiffer springs and at least porting on the exhaust side for a good balanced setup, or you will be severly choking your motor
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????I have stock heads and the cam i used (comp 270)has a rough idel and workes really well I gained a lot of power on both bottom and mainly high rpm range.This cam was highly reccomended where i was for this motor and i love it.
The 270 cam is better suited to heads that have had some basic port matching and bowl blending. For stockers I wouldn't go past the 260-265 range, and would definitely use a dual pattern grind.
Brad
Last edited by Brad Johnson; Jan 17, 2006 at 11:46 AM.
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From: iowa
Originally Posted by Brad Johnson
The 270 cam is better suited to heads that have had some basic port matching and bowl blending. For stockers I wouldn't go past the 260-265 range, and would definitely use a dual pattern grind.
Brad
Brad
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From: PacNW
Port matching without a flow bench is a waste of time & money. Typical flow efficiency around the port entrance/exit is around 90% on even the worst stock heads. If you're going to take the time or spend the bux to port your heads focus on the area in the pocket and on the valve guide boss. Then take a look at unshrouding the valves. Increasing the flow into & out of the pocket will pay big dividends. Port matching is for racers and car rag articles.
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From: Madison, SD
Do you want a cam that WORKS good, or a cam that SOUNDS good??? IMO, a 270 is way too much duration for stock heads on the street. As Bill said, some good pocket porting on your heads in addition to a good cam will work much better. I fill out one of the Spec Sheets that Comp Cams has on their web site, then call their tech line and go with their recomendations for cam selection... All the cam companies have the same service, I'm sure. Over camming is the most common mistake made on street and drag motors.....
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