049 vs 990
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049 vs 990

  1. #1
    Bass Lake Dream'n "Flat" foot'n's Avatar
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    Default 049 vs 990

    Being that I'm on a tight budget, can a good head shop tune a set of 049's to flow close to or as good as 990's?
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    What size is the Mill?
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    I built 396 11:1 with 049 heads cut for big valves just a little port work for my 18' Biesemeyer flat. it worked ok but just ran out of head. i now have a brand new set of 990's that will be used on my 427.
    if its for your bezer i would run 990's.

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  6. #4
    steelcomp was here
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    Quote Originally Posted by biesemeyer View Post
    I built 396 11:1 with 049 heads cut for big valves just a little port work for my 18' Biesemeyer flat. it worked ok but just ran out of head. i now have a brand new set of 990's that will be used on my 427.
    if its for your bezer i would run 990's.
    A 396 with a set of 049's did not run out of head- especially with oversized valve and any portwork.
    Last edited by scott foxwell; 04-10-2013 at 11:44 AM.
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    steelcomp was here
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    Quote Originally Posted by "Flat" foot'n View Post
    Being that I'm on a tight budget, can a good head shop tune a set of 049's to flow close to or as good as 990's?
    I can build a set of 049's to make a set of stock 990's look silly. Is that the question, or are you asking if the 049's have the same potential?
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    Bass Lake Dream'n "Flat" foot'n's Avatar
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    I have a 468, 9.5:1, 049 heads, 114cc chambers, 140lbs spring pressure, clay smith solid lift flat tappet cam (p/n c-306-8-B) , Harlen Sharp roller rockers, Manley rods and LS-7 steel crank, ARP studs.
    Weiand tunnel ram (square port) with 2 Holley 750cfm DP. MSD Pro Billet, blaster coil and the 6al MSD box.
    What I'm curious about is if I can make these heads perform as good as stock 990's on this application.
    I realize my compression is my Achilles heel but I needed to run safely on pump gas. The best rpm I've seen was around 6300rpm. This is going in my Bezer and I have lightened 18's in the box.
    Initial build was with a Dart single plane with a Holley 850. Considering going back to a single carb set up.
    Would I be better off spending the $ on a set of 990's or tuning and tweaking these 049's? I have another set of virgin 049's sitting in the garage I could use or trade both sets off for 990's. Hell, I don't know. I just want more rpm. I was told these little Bezers like a lot of rpm.
    Last edited by "Flat" foot'n; 04-10-2013 at 01:01 PM.
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    Were all of the engine specs the same with the single carb set up? What was the maximum Rpm with the single carb?

  10. #8
    steelcomp was here
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    Quote Originally Posted by "Flat" foot'n View Post
    I have a 468, 9.5:1, 049 heads, 114cc chambers, 140lbs spring pressure, clay smith solid lift flat tappet cam (p/n c-306-8-B) , Harlen Sharp roller rockers, Manley rods and LS-7 steel crank, ARP studs.
    Weiand tunnel ram (square port) with 2 Holley 750cfm DP. MSD Pro Billet, blaster coil and the 6al MSD box.
    What I'm curious about is if I can make these heads perform as good as stock 990's on this application.
    I realize my compression is my Achilles heel but I needed to run safely on pump gas. The best rpm I've seen was around 6300rpm. This is going in my Bezer and I have lightened 18's in the box.
    Initial build was with a Dart single plane with a Holley 850. Considering going back to a single carb set up.
    Would I be better off spending the $ on a set of 990's or tuning and tweaking these 049's? I have another set of virgin 049's sitting in the garage I could use or trade both sets off for 990's. Hell, I don't know. I just want more rpm. I was told these little Bezers like a lot of rpm.
    The 049's would be a better choice, even with the mis-matched Weiand TR.
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    Bass Lake Dream'n "Flat" foot'n's Avatar
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    Yes it was. The rpm I can't cant really say, I'm thinking it was around 6000. The tunnel ram really made the boat feel faster. The boat was my Barron Sprint.
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    Bass Lake Dream'n "Flat" foot'n's Avatar
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    049's? So what am I going to want done? Are you local to SoCal? I'll be pulling the motor down to key the crank. I'd like to make the changes then.
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  13. #11
    steelcomp was here
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    Quote Originally Posted by "Flat" foot'n View Post
    049's? So what am I going to want done? Are you local to SoCal? I'll be pulling the motor down to key the crank. I'd like to make the changes then.
    They need a bigger intake valve and some bowl blending and short turn work. Nothing drastic to make them support 750hp.
    A month ago I was local in CA but now, not so local any more. (In N/E Tennessee)
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    Bass Lake Dream'n "Flat" foot'n's Avatar
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    Lucky you! Congratulations on your escape. Who would you recommend. Clay Smith did all the machining and balancing in 07', maybe take them there.
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    Senior Member ol guy's Avatar
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    049s will flow to feed a mid 400 inch motor in a heart beat. The BIG thing with them is bowl work and 2.19 intake and at least a 1.88 exhaust. To add would be take out the the casting flash and do a good smooth. I personally think (without knowing if you are running a 4779 side ways or a 6109 inline) That you will create a little tuning work! Not that big a deal to me but worth the learning experience! Also seeing over 7k is realistic with the 049 head ( depending on alot of the added components) Good luck!

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