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Can someone tell me, what's the largest Cam?

This is a discussion on Can someone tell me, what's the largest Cam? within the Internal Engine forums, part of the LSx Technical Help Section category; ...

  1. #41
    Member midi_2001's Avatar
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    Quote Originally Posted by Mr. Luos View Post
    Start with little stuff.
    Subframe connectors are a must. Worth every dime.
    Airbox lid and a quality catback. I recommend the SLP lid and a Magnaflow catback.
    Headers would be next. Budget buy I would go with Pacesetters.

    Before getting into the internals, get all the bolt-ons first, otherwise you won't be taking advantage of the cam and heads potential.
    Obviously I'm still pondering all of the information you've more than generously provided. I have questions regarding the exhaust. I'm looking for great performance, great sound, lasting durability and a system that goes together well. Here are my considerations:

    Hooker Comp. Headers, #2469-2HKR, 1-3/4, stainless steel (hope to get these ceramic coated). I plan on doing the TSP 228R cam swap further down the road. Would the Super Comp. 1-7/8" header be better?

    Hooker Y-pipe, #16723-2HKR, 409 stainless steel.

    Magnaflow Cat Back Exhaust, #16723, stainless steel.

    And finally,
    Random Technology 2-1/2 Converters, #18-125000. Are these absolutely necessary? If not, how do I get around NOT using them?

    With all of the above mentioned parts, will this go together smoothly or will I have to purchase stainless steel adaptors and/or extensions to cobble it together?

    Thanks.

  2. #42
    Slow'er'Ass Mr. Luos's Avatar
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    Do you have to pass emissions where you live?? If not, cats aren't needed.
    I like the Magnaflow catback.

    Pacesetter longtubes seem to be a favorite lower cost header.
    If you get cats, you want a catted y-pipe.
    No cats?? You want an offroad y-pipe.

  3. #43
    Member midi_2001's Avatar
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    No, we don't have emissions testing here in MI anymore. How will the cars computer react to the missing cats?

  4. #44
    Slow'er'Ass Mr. Luos's Avatar
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    It will need tuned...but more for the cam.
    SES light will kick on without cats due to the rear O2's not reading right.

  5. #45
    Member midi_2001's Avatar
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    Reprogramming will get rid of the SES light or will it stay on indefinitely?

  6. #46
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    A tune will get rid of it. Just needs those particular codes turned off.

  7. #47
    Member midi_2001's Avatar
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    Ahhh. As far as the 1-3/4" diameter header vs. the 1-7/8"? Down the road I do plan on going with the TSP 228R bumpstick (or equivalent), should I go with the bigger tubes?

  8. #48
    Slow'er'Ass Mr. Luos's Avatar
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    No.
    Stick with 1 3/4" primaries.

    The larger ones are for strokers....

  9. #49
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    Mr. Luos, you had previously mentioned the SLP lid.

    So, as far as the induction system is concerned, SLP has a Cold-Air "FlowPac" Package which includes the Cold-Air Induction Package, High-Flow Air-Box Lid, Smooth Bellows, and Blackwing Air Filter.

    My WS6 has ram-air induction. Will it perform better with that particular SLP package?

    (I was thinking the ram-air induction would be adequate with a few mods such as throttle body port and polish, aftermarket filter and SLP Mass-Air-Flow Sensor.)

  10. #50
    Slow'er'Ass Mr. Luos's Avatar
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    Avoid SLP for anything other than their lid and linelock.


    Keep your stock MAF. Good for 500+ HP and aftermarket ones aren't always the best. They lean you out...which can (in a few cases) create serious issues.

  11. #51
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    Just touching back on the exhaust thing a bit. Headers, y-pipe to catback vs. headers, high flow catalytic converters, y-pipe to catback; both using the exact same product line. Much of a difference in HP?

  12. #52
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    4-5 RWHP.
    Cats will cut a very little amount.

  13. #53
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    Can anyone actually give a difinitive answer to the actual question? Cos this one would be helpful to me. I have valve to piston action happenning on mine albiet only slightly. I have a 283 stroker, xr 275 cam (.571/.573) AND comp 1.85 rockers, but i dont know how hard the heads have been skimmed, i have flowed perimeter early heads, and i noticed somewhere else on the forum, they have a stock cc of 69cc, ( can you guys confirm.) i will measure these today. I am leaning towards some Patriot stage 2/3 heads to replace, and if i need to come down to 1.8 lifters. Thanks in advance.

  14. #54
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    Piston to valve clearance is more determined by the duration and the lobe of the cam.

  15. #55
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    Quote Originally Posted by midi_2001 View Post
    Mr. Luos, you had previously mentioned the SLP lid.

    So, as far as the induction system is concerned, SLP has a Cold-Air "FlowPac" Package which includes the Cold-Air Induction Package, High-Flow Air-Box Lid, Smooth Bellows, and Blackwing Air Filter.

    My WS6 has ram-air induction. Will it perform better with that particular SLP package?

    (I was thinking the ram-air induction would be adequate with a few mods such as throttle body port and polish, aftermarket filter and SLP Mass-Air-Flow Sensor.)
    I have the SLP Flow pac and I love it and it gave me 2.5 mph gain in the quarter and dropped .15 tenths of my quarter mile time. I ran both ram airs. good stuff.

  16. #56
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    Quote Originally Posted by midi_2001 View Post
    Just touching back on the exhaust thing a bit. Headers, y-pipe to catback vs. headers, high flow catalytic converters, y-pipe to catback; both using the exact same product line. Much of a difference in HP?
    I run qtp headers, striaght pipe which is the off road y pipe back to striaght pipe tips out the rear and you can tell a differance in my opnion verse having cats and mufflers. more flow more hp always....

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