Cam help 540 BBC - Chevelle Tech
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post #1 of 9 (permalink) Old Aug 2nd, 08, 9:47 PM Thread Starter
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Dave
 
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Cam help 540 BBC

540 BBC Dart 320 heads , 1050 dominator , 11.5 to 1 compression
4.56 gear , 4000 stall ..looking for a street strip recomendation ...pulled the intake today and found lobes going south...any help would be appreciated .
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post #2 of 9 (permalink) Old Aug 2nd, 08, 10:14 PM
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Levon
 
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Re: Cam help 540 BBC

Talk to Chris Straub or Mike Lewis or UD Harold
They will do you right and they are available through this web site.

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Last edited by LevonH; Aug 2nd, 08 at 10:28 PM. Reason: Spelling and added UD Harold :-)
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post #3 of 9 (permalink) Old Aug 2nd, 08, 10:23 PM
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Re: Cam help 540 BBC

With the 4000SS converter and the 4.56 gear, are you looking for a roller cam, street-n-strip type, or a hydraulic roller, or a solid lifter, etc?
Also, what sort of lift? I make cams at .668", .680", and .725" that are very streetable, capapble of 2000+ miles in 24 hours. These are steel billet roller cams.

UDHarold

My typical 540 street-n-strip cams are 288/296 at .020, 257/265 at .050, .725"/.725" gross valve lift, and 112 LSA, and 302/310 at .020, 271/279 at .050, .725"/.725" gross valve lift, and 110 LSA.
Both htese two cams have the same opening and closing ramps on them.
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post #4 of 9 (permalink) Old Aug 2nd, 08, 10:48 PM Thread Starter
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Dave
 
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Re: Cam help 540 BBC

looking for solid roller ...car is not mine ...but it is in my garagea as we found the cam damage today during a intake swap..what type of lifter would you recomend as well ...car will see street duty ..and track time ...this is also a GM gen 6 block if that makes a difference ...
thanks Dave.
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post #5 of 9 (permalink) Old Aug 2nd, 08, 11:02 PM Thread Starter
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Dave
 
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Re: Cam help 540 BBC

A few other details this is a shaffirof street engine from around 1998 the intake is a dart as well ...and it looks as thought the tops of the lifter bores have been machined to accept a standard length lifter ...
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post #6 of 9 (permalink) Old Aug 2nd, 08, 11:14 PM
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Matt
 
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Re: Cam help 540 BBC

My 540 had 10.5 compression, Dart intake, AFR 335cc heads and made 775HP (at 6300 and 6400 RPM) and 698ft/lb of torque (at 4800 RPM) on the dyno. Solid roller. Great for street/strip. No too radical. Specs were (from memory) :
Duration at .050: 256/262
Lift: .650/.650
Lobe Separation: 114 degrees.

1966 Chevelle, original 283/glide with 54k miles. 1987 Grand National, runs mid 10's with working A/C and cruise control.
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post #7 of 9 (permalink) Old Aug 3rd, 08, 2:42 AM
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Re: Cam help 540 BBC

Sounds like you got a couple good suggestions from UDHAROLD in post #3. With an 11.5:1 CR I'd go with the bigger of the two cams he mentioned if the car is to be run on pump gas. Furthermore, I don't think that you'll find a more knowledgeable cam guy than Harold.

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post #8 of 9 (permalink) Old Aug 3rd, 08, 2:55 PM Thread Starter
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Re: Cam help 540 BBC

cool thanks ...Harold how do I order from you ?? alos what lifter do you guys recomend for street duty ??
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post #9 of 9 (permalink) Old Aug 3rd, 08, 3:07 PM
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Re: Cam help 540 BBC

Quote:
Originally Posted by chevelledave View Post
what lifter do you guys recomend for street duty ??
That depends what type of cam you'll be using. For a solid roller cam, I would go with the Isky Red Zone lifters with the "EZ Roll" option if I were you, simply because they don't have needle bearings like the conventional roller lifters do. But if you'll be using a hydraulic roller cam, then I think there are a number of good lifters out there for those, and your choice wouldn't be as critical.

70 Chevelle SS clone (632 CI powered).
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