Carb size calculator

Topic: Carb size calculator (Read 8036 times) previous topic - next topic

Carb size calculator

Reply #30 – January 02, 2011, 08:42:31 AM

If you're looking for every last ounce of power; my statement stands....

I see no point in opening a car up for a stop gap or an "in the mean time"

I've put in the "good enough" in the past. I was not satisfied. I will not repeat this mistake.

"just not as well" as you put it isn't good enough IMHO.

Nothing more nothing less. I'm not against saving money, but not being satisfied is pennywise and dollar foolish.

Carb size calculator

Reply #31 – January 02, 2011, 10:58:38 AM

I wish my $400 custom cam cost that,till I bought the springs and new pr's and the rest it was a $1000. I'm happy with it,but don't think you can through just a custom cam in and it's done.

Carb size calculator

Reply #32 – January 02, 2011, 11:50:27 AM

Quote from: V8Demon;348074

Wow...Do you always get so bent out of shape? I fail to see where I insulted you.
No wonder I hardly ever post here as this place USED to be able to accept other opinions and sources of input. Funny you mention SBFtech because for your ridicule of them you sound as if any advice that would come from there would be shunned by you simply because of it's source.
Pot meet kettle.If you did a #2 build and it worked for you -- meaning you were satisfied with the results -- then great. The average person doing a build on #2 will spend more money than they initially intended in my views/experiences. Some get lucky. Most won't. Those who get lucky have made enough builds before/had the right person help them.
I've seen fully assembled sets of TFS and AFR heads go for far less than $1000. The trick is to be patient and wait for a used set. And $400 for a custom cam is a small price to pay to tie everything together correctly. If one cannot be patient enough to wait for the parts they want to meet their budget, perhaps they should find a new hobby. If $400 is too much they should DEFINITELY find a new hobby.

I realize that not everyone has X amount of dollars to spend on a build -- again this goes into priorities and whether or not one should even THINK about a teardown/buildup. You should never go into a build wanting to spend X and only having X. You should always have a surplus -- NO EXCEPTIONS.

Just a couple of thing , first I dont shun the advice at SBF, there is some fantastic info there , I just shun the huge amount of arrogance show by some (not all) posters there ,Mods included.
Take a look at how many members there that have been banned from other forums and they always think its "because they post facts that no one wants to hear " It couldn't possibly because they go to other forums and are insulting and condescending.
Second , the automotive "hobby" consists of more than just going fast , what about the guy who goes to a show and shine and just uses his car to cruise around on weekends ?
Does he need a custom cam and big heads to enjoy his car ?I say no, there are perfectly good OTS parts that are going to make him happy .
My point is there is no "right" or "wrong" way to be in this hobby , we are all individuals.

For instance I like fat chicks with hairy legs , does that mean that everyone should have one?

Carb size calculator

Reply #33 – January 02, 2011, 12:09:11 PM

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For instance I like fat chicks with hairy legs

Seek therapy. Not so much for the fat, but the hairy.:hick:

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what about the guy who goes to a show and shine and just uses his car to cruise around on weekends ?

What about them? I would convey to them what I feel would be a good build. If they choose to go another route then by all means let them. I have no problem with it.

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I dont shun the advice at SBF, there is some fantastic info there , I just shun the huge amount of arrogance show by some (not all) posters there ,Mods included.

That's a fair statement. The other side of the coin is that some of them have put together TONS of combos. Many of the people they spouted off upon are not experienced yet claim to be. I know one kid that was berated over there personally. He had it coming from the way he came off.

One of the issues with the typed word as opposed to spoken is the fact that overall tone is lost and hard to convey. I meant no disrespect toward you and it's evident you feel the same. Just some emotion lost in the machine that would have made the exchange more understandable if it were there. I do appreciate you being civil and I tried to do the same

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I wish my $400 custom cam cost that,till I bought the springs and new pr's and the rest it was a $1000. I'm happy with it,but don't think you can through just a custom cam in and it's done.

Just about ANY cam upgrade should necessitate a spring upgrade and a look at your pushrods to ensure proper valvetrain geometry. Even if one were to run an E-cam with stock E7 heads I would hope that they would take the time to research a little to find springs to work with those components. And your statement is exactly why I said to always have more budgeted than you want to spend. Incidental expenses not taken into account or a possible mistake can bring a build to a screeching halt.....

Back to Carbs...... I had a 1978 Olds with a 350 rocket. The car came with a 750 CFM q-jet..... Considering it's peak power of around 200 flywheel HP with the OTS cam (yes I have used them, LOL) and redline of 5500 RPM I would venture to guess that it was overkill. Strangely enough though it left the factory with that big of a carb on it.

I loved the sound it made when the secondaries opened.

Carb size calculator

Reply #34 – January 02, 2011, 12:09:24 PM

Hypostang, Really, fat chics with hairy legs?. Sbf does have some good advice,some people are besides themselves in there,you get that everywhere. That's what make this sight so much better, you can get high tech and the little stuff of doing things.
Oh yeh, fat bottom girls make the world go round!!

Carb size calculator

Reply #35 – January 02, 2011, 12:10:35 PM

V8Demon,
You are absolutely correct on the flow on the LS1 heads but my statement was not meant to detract from the LS1. Comparing the LS1 gear to the 351W roller motor out of a Lightning is sort of fair but you limited the 351W to a py cam. Again, apples to oranges in my opinion. Now if you had compared the stock 351W out of the lightning to the same motor with the TFS2 cam and then a cam recommended by Comp or another source that would prove a point due to keeping the control the same. Again, this is just the way I see is and would think that it would be the way to do a good comparision to prove a point.

I went back and reread the entire thread and this all started with a simple post on a carb size calculator. It has drifted over to the current discussion of Bruce also stating that he was looking at building a motor with certain components. Others were offering advice on what to do with the combo to improve on it. I think the general consensus is that the TFS2 or F303 cam should not be used. I have had great luck with calling Comp Cams and getting a recommendation on a cam to use with a current engine combo. From there you can take the specs on the cam they recommend and see if you can find a used one or simply bite the bullet and buy a new cam. Get a cam that a known builder or cam guru suggests with current parts to be used and I think you will have built a great motor and it will be within your budget. Will it be all it can be? The obvious answer is no if you want to add more parts and money but if the OP wants to keep the build mild and just get all that he can out of the parts he has then the answer is yes.

Again, I am not arguing anyone's points on how to build a motor or what path to take. It just appears to me this got off track of the original intent. Hopefully Bruce is still watching the thread but I think he bailed on it a few pages ago, cannot blame him at all.

Not a fan of the big girls especially hairy ones. I guess I like mine with more up top and am willing to sacrifice some bottom end for it. The exterior must have a good wax job as well.

Darren

Carb size calculator

Reply #36 – January 02, 2011, 12:21:26 PM

Really, this is far from the original post. It is a good discussion though.

Carb size calculator

Reply #37 – January 02, 2011, 12:27:54 PM

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The exterior must have a good wax job as well.

WIN.

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Now if you had compared the stock 351W out of the lightning to the same motor with the TFS2 cam and then a cam recommended by Comp or another source that would prove a point due to keeping the control the same.

I actually agree with you on this. The issue is though that many more people even now seem to post about using the e-cam with the Gt40 heads and believe it of not it is a "bigger" cam than the GM hot cam. My point was to show 2 different approaches is all

While we're on LS1's I'd love to drive one with a hot cam and then follow it with one that has an LS6 cam back to back for comparative purposes. The hot cam is a relatively short lift longer duration and small LSA. The LS6 is higher lift, shorter duration wider LSA. ALOT wider

Carb size calculator

Reply #38 – January 02, 2011, 04:51:45 PM

there goes the neighborhood!

Carb size calculator

Reply #39 – January 02, 2011, 09:47:52 PM

Quote from: Aerocoupe;348114

V8Demon,
You are absolutely correct on the flow on the LS1 heads but my statement was not meant to detract from the LS1. Comparing the LS1 gear to the 351W roller motor out of a Lightning is sort of fair but you limited the 351W to a py cam. Again, apples to oranges in my opinion. Now if you had compared the stock 351W out of the lightning to the same motor with the TFS2 cam and then a cam recommended by Comp or another source that would prove a point due to keeping the control the same. Again, this is just the way I see is and would think that it would be the way to do a good comparision to prove a point.

I went back and reread the entire thread and this all started with a simple post on a carb size calculator. It has drifted over to the current discussion of Bruce also stating that he was looking at building a motor with certain components. Others were offering advice on what to do with the combo to improve on it. I think the general consensus is that the TFS2 or F303 cam should not be used. I have had great luck with calling Comp Cams and getting a recommendation on a cam to use with a current engine combo. From there you can take the specs on the cam they recommend and see if you can find a used one or simply bite the bullet and buy a new cam. Get a cam that a known builder or cam guru suggests with current parts to be used and I think you will have built a great motor and it will be within your budget. Will it be all it can be? The obvious answer is no if you want to add more parts and money but if the OP wants to keep the build mild and just get all that he can out of the parts he has then the answer is yes.

Again, I am not arguing anyone's points on how to build a motor or what path to take. It just appears to me this got off track of the original intent. Hopefully Bruce is still watching the thread but I think he bailed on it a few pages ago, cannot blame him at all.
Not a fan of the big girls especially hairy ones. I guess I like mine with more up top and am willing to sacrifice some bottom end for it. The exterior must have a good wax job as well.

Darren

Im still here. I just have'nt had anything constructive to add. I strongly disagree that if you dont have much money that you should find a new hobby. I dont have much money but Im still going to wrench on my car as much as I can and just because some of us cant afford custom cams doesnt meen we shouldnt build engines. There are very good proven cams on the market.

Carb size calculator

Reply #40 – January 02, 2011, 10:59:45 PM

Quote from: Aerocoupe;348016

Go check out http://www.sbftech.com/ and you will understand. Kind of similar to what you will find at http://www.corner-carvers.com only they are nice at sbftech. You were warned so just lurk...do not post until you are 100% you want to go down that road.

You are correct in the fact that we are nicer over there....THANX....however SBFT is a no BS site and gives hard fact info based on real experience ...even though the answer is not what the OP want's to hear. When I joined , there were only 200-300 members and I learned to grow some thick skin REAL quick ...as well as a set LOL, after getting some hard to swallow replies. The main rule there is " MISINFORMATION WILL NOT BE TOLERATED " ( see my sig below LOL ).
I LOVE it here as well for all the info available provided so freely by members who have done the actual work and can verify the results,( not just copy and paste magazine articles like on some other sites ). This is one of the main reasons I chose to donate $ as others did to keep such a good site up and running. I don't post much, but learn a lot...THANX :bowdown:

EDIT: My sig wasn't showing....

Carb size calculator

Reply #41 – January 02, 2011, 11:18:44 PM

Quote from: 86T-bird;346825

In my experience those caluculators have little basis in the world of performance. Maybe it's good for a stock engine, can't say, I've never had one in a project car.

I haven't run anything smaller than a modified 750 on 306 w/a 6,500 RPM shift point.

If you want to go fast, look elsewhere for advice on the right carb.

"the single biggest decision is the cam" Bingo! There's a comment I can get behind.

EXACTLY! I started with a 600 on my 289/351 headed Comet , then a 650DP, then a 700DP and finally a modified 750 DP to get my engine to turn 8400 @ 11.9Xs. A Ford needs more carb than a similar SBC and the cam dictates how much more.:D

Carb size calculator

Reply #42 – January 03, 2011, 06:08:29 AM

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I strongly disagree that if you dont have much money that you should find a new hobby. I dont have much money but Im still going to wrench on my car as much as I can and just because some of us cant afford custom cams doesnt meen we shouldnt build engines.

Perhaps I'm jaded.....but then again It's most likely because I've had to foot someone gas money who bought a set of $200 rims the week before. The gas money had to get him 125 miles. We all chipped in and gave him $10 each. It wasn't the money, but rather the lack of foresight combined with it which is what I'm trying to get at... We've all seen people on the interwebz who want 1000 HP on a newspaper route budget.

You guys would not believe how many first time engine builders I see break the bank and underestimate the amount needed and loe and behold the project sits on the side of the house or is sold off to become someone else's problem.

This site caters to a car that for the most part was not seen as a car to modify..... The members here are an exception, not the norm for the most part.

Just because a cam is good doesn't mean you should stick it in a motor either. Comp's XE274 aint gonna cut it in a stock head 5.0. Neither is a Steeda #19 IMHO. They DO have their place though.

Carb size calculator

Reply #43 – January 03, 2011, 09:59:48 AM

I see where you're coming from. Im not a first time engine builder, I worked at a machine shop for five years. My boss there helped me pick cams and I always discuss my plans with him to get his input. I dont waste money on bad parts and I dont us gas, bill, or rent money to buy parts for my car.