Carb Suggestions

[Alan_Mac 48]

i'm curious to know which 950 you have.  I know there are true 950 cfm carbs and the 950 hp's that are much smaller.  I have the 950hp which has the smaller venturi on mine and it wet flowed 830 cfm (memory) from Pro-Systems.

 

 

 

Good to know what it wet flowed, I believe my Bigs 950 stage 5 has the smaller venturi,  Both primary and secondary venturi measure 1 3/8 diameter.  They are smaller than an 850 which are both 1 9/16.  So now the carb doesn't seem overly big.  

[Alan_Mac 48]

Thanks for the info . If you were to put a different cam in it like the first one I posted or a similar one, I would keep the carb you have and try it first to see if you like the way it runs as this might save you some money . If you want the best throttle response you can get with a bigger cam I would consider a quick fuel mechanical secondary annular booster 850 carb with the optional slow secondary linkage rod, unfortunately that carb is not cheap.

 

The first cam I posted is a popular one for 410 and 418 ford strokers etc so it is nothing unusual and would be considered about in the middle for a performance street cam , some people that want much more of a street strip car and fairly nasty/rough idle would use a bigger one.

 

I would also try your engine with a 1" spacer if you have hood clearance . I think you will find that you will gain some power but you my need a drop down air cleaner for clearance which would put the lid very close to the top of the choke housing which will cost some hp which is one reason why you should not run a choke.

Barnett; I agree with you suggestion, keep the carb change the cam.  Someone with a similar small 950 carb said his wet flowed at ~830 C. My carb venturi are 1 3/8 dia. and its size is slightly smaller than an 850 venturi.  I am not sure if the P to V clearance will be enough for the voodoo cam intake 231 lift @ .050.  See the attachment here. http://s124.photobucket.com/user/Alan_MacDougall/media/side%20marker%20dimensions/Picture%20099_zpsrwpfaqzb.jpg.html       

[barnett468 418]

Barnett; I agree with you suggestion, keep the carb change the cam.  Someone with a similar small 950 carb said his wet flowed at ~830 C. My carb venturi are 1 3/8 dia. and its size is slightly smaller than an 850 venturi.  I am not sure if the P to V clearance will be enough for the voodoo cam intake 231 lift @ .050.  See the attachment here. http://s124.photobucket.com/user/Alan_MacDougall/media/side%20marker%20dimensions/Picture%20099_zpsrwpfaqzb.jpg.html       

 

Can you tell us which pistons those are?

 

From what I can tell, it looks like you should have a mile of clearance with .600 valve lift and with up to 2.25" diameter intake valves.

 

If you do want to to a different cam I suggest you tell us exactly what you want out of the engine so people can make informed suggestions to try and get you close . If you want a custom cam I would have Chris Straub make it . This is nothing against Jay Allen at all and he could also do it but I have dealt with Chris Straub before.

 

http://www.straubtechnologies.com/

 

 

Mild, moderate, or fairly nasty idle?

 

Light to light drag car, freeway flier, or something inbetween?

 

How far do you want to rev it?

 

Do you want tons of torque with a 5500 rpm limit or will you sacrifice strong low end power for a 6500 rpm limit etc?

 

Do you want a "soft" smooth power band or do you want it to suddenly hit fairly hard?

 

Do you have power brakes, and if so are you willing to sacrifice a little performance mainly in traffic conditions?

[Max Power 74]

ummm...your attempt at sarcastic "humor" needs some serious improvement imo, therefore I suggest you stick to something you are better at for the time being .  Now, let's get your "facts" straight . There were basically three people that were causing a LOT of trouble here and they were causing it with more than one person . I know that one of the moderators dealt with all three of them in one way or another . I believe he banned one, if not two of them . The fact that I am still here and they are not should speak for itself.

 

I knew two of these people from other forums where they also initiated problems by making unwarranted, rude, and disrespectful comments to others, unfortunately, they are friends with the moderators on a couple of those forums so the moderators don't address this issue with them for fear of damaging their friendship, plus, on two of those forums, the moderators even contribute to the problem . These people did this so frequently (almost daily) that I could copy and post over 100 examples of this, however, this thread is NOT the place to do this, nor are other peoples threads really the place for people to air their grievances with others like it seems that you are doing here with me to some degree.

 

I made no sarcastic or inappropriate comment about you whatsoever, therefore, I see no reason for you to make any about me . Also, the fact that at least one person "Liked" my comments regarding a sense of humor suggests that in their opinion at least, I am correct . Other peoples opinions may vary like yours obviously does.

 

There is a simple saying I like and agree with which I think would eliminate a lot of the problems on forums as well as in other situations in life which is, "Don't start nothin and there won't be nothin." . I also think that it is peoples duty on a free public forum like this one to try and make the lives of forum moderators as easy as possible by not causing problems . They put time and effort into these sites with no reward and really shouldn't have to play babysitter, especially for grown adults . I think that some people forget that ALL of us on these forums are here by the good graces of the people that run and/or own them.

I will just say one more thing on this and let it go, because most people here don't really care. 99% of what you post here is helpful and friendly, but on occasion, you will post something that has an arrogant or condescending tone. I am not the only one that has noticed it, clearly the OP did in this case, and he noticed it enough to mention it.

 

YOU asked why he thought you didn't like his car, not any of us, and I answered. Then you started blah blah blah about sense of humor, etc. That really has nothing to do with it. On occasion your posts have that effect. It doesn't matter what you felt at the time, or if you thought it was funny etc. The reader isn't always at fault for not reading your mind.

[Alan_Mac 48]

Can you tell us which pistons those are?

 

From what I can tell, it looks like you should have a mile of clearance with .600 valve lift and with up to 2.25" diameter intake valves.

 

If you do want to to a different cam I suggest you tell us exactly what you want out of the engine so people can make informed suggestions to try and get you close . If you want a custom cam I would have Chris Straub make it . This is nothing against Jay Allen at all and he could also do it but I have dealt with Chris Straub before.

 

http://www.straubtechnologies.com/

 

 

Mild, moderate, or fairly nasty idle?

 

Light to light drag car, freeway flier, or something inbetween?

 

How far do you want to rev it?

 

Do you want tons of torque with a 5500 rpm limit or will you sacrifice strong low end power for a 6500 rpm limit etc?

 

Do you want a "soft" smooth power band or do you want it to suddenly hit fairly hard?

 

Do you have power brakes, and if so are you willing to sacrifice a little performance mainly in traffic conditions?

 

 

Probe SRS, -22cc,

Grand touring, maybe I take it to the drag strip on occasion. 

Now that I have a manual trans, I am not worried about the idle.  900 RPM is fine, Lumpy, semi nasty

Red line 6200 +

Grand touring would lean towards a smooth power curve with allot of area under the curve.  

No power brakes.  

 

Alan 

[barnett468 418]

Probe SRS, -22cc,

Grand touring, maybe I take it to the drag strip on occasion. 

Now that I have a manual trans, I am not worried about the idle.  900 RPM is fine, Lumpy, semi nasty

Red line 6200 +

Grand touring would lean towards a smooth power curve with allot of area under the curve.  

No power brakes.  

 

Alan 

 

ok, I would definitely consider the first lunati cam i posted then . it will be a very noticeable change but not a huge/excessive change .  i will post some others tomorrow also that are around that range.

[barnett468 418]

Here's 2 more.

 

https://www.summitracing.com/parts/hrs-220525-10

 

https://www.summitracing.com/parts/hrs-220525-12

[MikeStang 247]

I am starting to wonder if I would see any real change if I swapped form 1.6 rockers to 1.7 Rockers on my current cam?

Or maybe just 1.7 on one side perhaps.

Cam is

228/236@50

563/571 Lift on a 113 LSA.

I wanted a fairly smooth idle but the more I drive it the more I want a bit more Chop chop chop haha, it just doesn't sound really crisp at idle, there is a fair amount of lope but its a longer slow lope than comparable cams, which I know has to do with the 113LSA LOL.

Just wanted to go as big as possible and still have power brakes

[barnett468 418]

I am starting to wonder if I would see any real change if I swapped form 1.6 rockers to 1.7 Rockers on my current cam?

Or maybe just 1.7 on one side perhaps.

Cam is

228/236@50

563/571 Lift on a 113 LSA.

I wanted a fairly smooth idle but the more I drive it the more I want a bit more Chop chop chop haha, it just doesn't sound really crisp at idle, there is a fair amount of lope but its a longer slow lope than comparable cams, which I know has to do with the 113LSA LOL.

Just wanted to go as big as possible and still have power brakes

 

 

I would start a new thread and post all your specs but 8 rockers aren't a lot of money to give it a try.