looking for some input
+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 14 of 17

Thread:
looking for some input

  1. #1
    Bass Lake Dream'n "Flat" foot'n's Avatar
    Join Date
    Jan 2008
    Location
    SoCal
    Posts
    3,082

    Default looking for some input

    and who better to ask than you all.
    I have a 468bbc 800cfm carb on top of a dart single plane intake. oval port heads (stock and very tired), 9.5:1 flat top pistons, clay smith solid lift flat tappet cam (can't remember all the specs) 630 lift (i think), 4 bolt main, and
    new gm hp steel crank. It made just over 500hp with a bad distributor at 5800rpm.
    I'm looking to put a weiand tunnel ram, and rectangle port heads. I'm doing this on a tight budget and would like your input on a good set of affordable heads and what size carbs?
    This is in a flatbottom v-drive, casale 12* with 15% gears. prop is i believe a 11 3/4 x 13 1/4. not too sure, just had it tuned at hill props and not sure what it came out to. Runs good, 90mph (gps) at 6100rpm.
    Thanks for the input/advise

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

    Default

    You don't say whether alum. or iron. Do you already have the T ram and that is why your asking about rectangle heads?



    100% free webcam site! | Awesome chicks and it is absolutely free! | Watch free live sex cam - easy as 1-2-3

  4. #3
    steelcomp was here
    Join Date
    Dec 2007
    Location
    n/e TN
    Posts
    26,510

    Default

    Canfield 310's and an Edelbrock Victor Ram, but youlre going to need a better cam for the combination if you really want it to work. Rect port heads are big for a small engine/low cr like that unless youre going to turn some r's.
    If you're interested, I have a nice set of big ovals with 2.19/1.88 valve that flow over 300cfm, and would make over 600 hp easy with the right set up. $1195 for the set, complete, fresh with all new quality parts.
    Last edited by scott foxwell; 04-08-2009 at 07:32 AM.
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4

    Join Date
    Jan 2009
    Posts
    283

    Default

    I would run ported 990s with the same cam! and a pair of 750s and you will be around 600 hp. I might even go 850s Thats a good combo cheap!IMO

  7. #5
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

    Default

    Quote Originally Posted by BASS LAKE BARRON SPRINT View Post
    I'm doing this on a tight budget and would like your input on a good set of affordable heads and what size carbs?
    This is why I asked if you already had the T ram. A good set of ovals and another 800 carb to match the one you have would be a decent set up. And get yourself a decent ignition!



    100% free webcam site! | Awesome chicks and it is absolutely free! | Watch free live sex cam - easy as 1-2-3

  8. #6
    Senior Member Hullshot's Avatar
    Join Date
    Dec 2007
    Location
    Dicovery Bay
    Posts
    4,218

    Default

    Also double check your prop pitch and tach, either you are spinning alot more than 6100 or you have a lot bigger prop than you think or different gears than you think. #'s dont add up? right now you are over 100% effiecent?

  9. #7
    Bass Lake Dream'n "Flat" foot'n's Avatar
    Join Date
    Jan 2008
    Location
    SoCal
    Posts
    3,082

    Default

    I know the tach and gear #'s are right, guessing on the prop.

    I do have the tunnel ram already.

    Steel or aluminum heads, does'nt much matter at this point.

    I'm happy with the current top speed, would like a better hole shot. I was also looking at some 12% gears.

    Thanks, keep the ideas coming...you guys

  10. #8
    Senior Member
    Join Date
    Mar 2008
    Location
    San Diego
    Posts
    1,535

    Default

    Plus TR's just look cool! With your CR, iron heads, and 1 new carb and your set, with min cash outlay.



    Darrell.
    San Diego.

    28ft Sportcat
    With Twins

  11. #9
    Bass Lake Dream'n "Flat" foot'n's Avatar
    Join Date
    Jan 2008
    Location
    SoCal
    Posts
    3,082

    Default

    So what are 990 heads? Anyone here selling a set?

    How much compression bump can I get from a smaller cc head? I think mine are 114cc now.

    2 800cfm carbs sounds a little/alot too much for a 468. Should I be looking at something in the 600cfm range with vac secondaries?

    Like I said before, I'm not looking to set any speed records. Just want a very cool looking river runner that is fast enough to turn the passenger white as a ghost

    Oh, I have a MSD billet distr. and MSD box. I think that should be hot enough for what I'm doing.

  12. #10
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

    Default

    990's are stock GM iron rectangle port heads. You would probably better off with something like this. There are manuf by Dart. If you are going to run it hard, change the exhaust valves out to at least Manley severes or better. It will be just fine with 2 800's, 750's were a very popular T ram carb for yrs. for a setup like yours.
    http://store.summitracing.com/partde...5&autoview=sku



    100% free webcam site! | Awesome chicks and it is absolutely free! | Watch free live sex cam - easy as 1-2-3

  13. #11

    Join Date
    Jan 2009
    Posts
    283

    Default

    Nicely said gn7 !!!

  14. #12
    Bass Lake Dream'n "Flat" foot'n's Avatar
    Join Date
    Jan 2008
    Location
    SoCal
    Posts
    3,082

    Default

    What about a compression bump?9.5:1 to 10:1. Can I get this increase with heads alone?
    Should the carbs be mech or vac secondary's?

  15. #13
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

    Default

    Assuming you have the piston .010 in the hole with a 18 cc (commom) dome and a 118 chamber, C/R now is about 9.58, a 114cc head will give you 9.89, and a 110cc head will yield 10.2. The Edelbrock oval head has a 110cc chamber, but won't clear alot of pistons. They will clear later SRP's. Depends on what you have in there. The Eddy's have small rectanglar shaped intake port that is smaller than your T ram. What manifold do you have now, single plane or 2 plane? As for the carb, if you are trying to stay in budget, match the carb you have now.



    100% free webcam site! | Awesome chicks and it is absolutely free! | Watch free live sex cam - easy as 1-2-3

  16. #14
    Senior Member Hullshot's Avatar
    Join Date
    Dec 2007
    Location
    Dicovery Bay
    Posts
    4,218

    Default

    990 heads with alot of port work, new springs and manley severe duty swirl polished valves.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	IMG_9807.jpg 
Views:	50 
Size:	96.0 KB 
ID:	38551   Click image for larger version. 

Name:	IMG_9808.jpg 
Views:	50 
Size:	89.8 KB 
ID:	38552   Click image for larger version. 

Name:	IMG_9809.jpg 
Views:	51 
Size:	93.4 KB 
ID:	38553  

+ Reply to Thread
Page 1 of 2 1 2 LastLast

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in

Tags for this Thread

Digg This Thread

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •  
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95