from 112 c to108 center line

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from 112 c to108 center line

Post  tconnection on February 19th 2015, 2:22 am

Aheaded, 14:1cr Motor. Going from 112 center to 108 center line.
About what he increase would there be, if any?
Thanks

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Re: from 112 c to108 center line

Post  dfree383 on February 19th 2015, 9:10 am

How big is the engine and what's the balance of the cam specs? Rest of the combo & whatcha doing with it?
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Re: from 112 c to108 center line

Post  tconnection on February 19th 2015, 10:13 am

580 ci, the cam is 839/780 114ls, drag only. I gotta check on @.050 and adv.

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Re: from 112 c to108 center line

Post  dfree383 on February 19th 2015, 10:33 am

Not the right move IMO
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Re: from 112 c to108 center line

Post  Lem Evans on February 19th 2015, 11:07 am

dfree383 wrote:Not the right move IMO

X2

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Re: from 112 c to108 center line

Post  gt350hr on February 19th 2015, 12:53 pm

x3

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Re: from 112 c to108 center line

Post  tconnection on February 19th 2015, 1:32 pm

Not even 110?
I'm all ears and I ain't hard headed.
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Re: from 112 c to108 center line

Post  Curt on February 19th 2015, 1:46 pm

x4
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Re: from 112 c to108 center line

Post  the Coug on February 19th 2015, 1:49 pm

what you need to do is get this combo done and running and run it like you stole it and quit changing things every week... you will never know how good it runs unless you run it and try to get it tuned out...I am not picking on you just the facts...
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Re: from 112 c to108 center line

Post  dfree383 on February 19th 2015, 3:01 pm

tconnection wrote:Not even 110?
I'm all ears and I ain't hard headed.
Thanks

Nope.... I'd head the other way depending in the lobes and rest of the combo.


Last edited by dfree383 on February 19th 2015, 4:24 pm; edited 1 time in total
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Re: from 112 c to108 center line

Post  tconnection on February 19th 2015, 3:33 pm

I'm nor questioning u but this kind of stuff is new to me and I'm trying to pick up on it. Why not go down with cl In this case?
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Re: from 112 c to108 center line

Post  Lem Evans on February 19th 2015, 4:01 pm

If I hear you correctly...you have a cam that is ground on 114* lsa?

What's the duration at .050"

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Re: from 112 c to108 center line

Post  IDT-572 on February 19th 2015, 5:05 pm

Compression gearing and weight of the vehicle com into play also.

I'm not going to say it's wrong until I hear more. But in all fairness 580 inches and 108 very seldom go together.
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Re: from 112 c to108 center line

Post  tconnection on February 19th 2015, 8:16 pm

Lem, the cam @.050 is283/302 and at .020 is 316/340.
Yes it's one that you spec'ed and made for me.
I remember you telling me a long time ago to go on 112. Right now I was just wondering what would things be like if it was on 108 or 110. Would it make more hp or what.
Thanks


Last edited by tconnection on February 20th 2015, 1:33 am; edited 1 time in total

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Re: from 112 c to108 center line

Post  tconnection on February 19th 2015, 8:28 pm

Car 3000lb, right now 4:30 pro gear cause its new and was already in the third but figure it with a 3:80 or so. Cr I figuring 13.5. I wanted more. The 91 cc heads were shaved .020 and the dome pistons have a 12.5 cc volume  and comp. height is 1.235, 6.8 rod, 4.530 bore, 4.5 stroke. About what will cr be?
Thanks


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Re: from 112 c to108 center line

Post  Lem Evans on February 19th 2015, 8:30 pm

tconnection wrote:Lem, the cam @.050 is283/302 and at .020 is 316/340.
Yes it's one that you spec'ed and made for me.
I remember you telling me a long time ago to go on 112. Right now I was just wondering what would things be like if it was on 108 or 110. Would it make more he or what.


Thanks

Have u ran it yet?

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Re: from 112 c to108 center line

Post  tconnection on February 19th 2015, 9:24 pm

No more than down the street.

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Re: from 112 c to108 center line

Post  Lem Evans on February 19th 2015, 9:33 pm

You worry too much....take that deal to the track and beat on it.

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Re: from 112 c to108 center line

Post  tconnection on February 19th 2015, 10:31 pm

Yea your right. Its just that I got a couple talkers around here that can't stand me having this setup. And they'really bout to make me mad. But u know, ain't worried cause there's a new Aheaded Beast in town.

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Re: from 112 c to108 center line

Post  Lem Evans on February 19th 2015, 10:56 pm

tconnection wrote:Yea your right. Its just that I got a couple talkers  around here that can't stand me having this setup. And they'really bout to make me mad. But u know, ain't worried cause there's a new Aheaded Beast in town.

F 'em ....carry on.

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Re: from 112 c to108 center line

Post  69F100 on February 20th 2015, 12:07 am

tconnection wrote:Yea your right. Its just that I got a couple talkers  around here that can't stand me having this setup. And they'really bout to make me mad. But u know, ain't worried cause there's a new Aheaded Beast in town.

If you going to be running Douglas track if they hadn't done anything to help traction you going to have your hands full making a full pass. I heard that it is under new management but haven't been there to see how the track is now. But if it is the same as it was like I said you will have full making a full out pass.
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Re: from 112 c to108 center line

Post  IDT-572 on February 20th 2015, 10:04 am

The cam is on the money............... Cool
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Re: from 112 c to108 center line

Post  IDT-572 on February 20th 2015, 10:11 am

Are you sure your dome is 12.5 cc's If it is I'm seeing about 14.3:1 compression if your chambers are at 85-86cc's
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Re: from 112 c to108 center line

Post  tconnection on February 20th 2015, 12:21 pm

Yea, they have a 12.5cc dome. They are diamond lateral gas ports.
Thanks


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Re: from 112 c to108 center line

Post  richter69 on February 20th 2015, 12:25 pm

Never in my life have i let people not in the know decide if my combo is right or not.

Carry it to the track and wear that bitch out.
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