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 .
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.
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.
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 ...
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.
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. :noway:
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.
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