x-303 ?'s - Northern California Ford Owners

This is topic x-303 ?'s in forum Tech Talk at Northern California Ford Owners .

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Posted by BOTTLED.LX (Member # 3267) on :

will a x-303 clear a stock piston on a 89 5.0. it has ported 351w heads thanks [patriot]

Posted by 89TRUNK (Member # 2506) on :

I used an x303 w/ edelbrock rpm heads no piston notching

Posted by Black94 5.0 (Member # 655) on :

What size valves are in your 351 heads?....

Posted by 93PONY (Member # 60) on :

Yes.....IF it is installed correctly.

Posted by Black94 5.0 (Member # 655) on :

quote:
Originally posted by 93PONY:
Yes.....IF it is installed correctly.

So, it will work if you install it "straight up" or "dot-to-dot"?....

Posted by 93PONY (Member # 60) on :

'Straight-up' yes
'Dot-to-dot' no

Posted by Black94 5.0 (Member # 655) on :

What's the diffence?...I know what "dot to dot" is, but I thought that was refered to "straight up" too...

Thanx

Posted by 66 AC COBRA (Member # 904) on :

quote:
Originally posted by Black94 5.0:
What's the diffence?...I know what "dot to dot" is, but I thought that was refered to "straight up" too...

Thanx

if i remember right the x cam is ground 4* advance, so when u retard it 4* it is actually being installed straight up

or it could be the other way around, but the x cam isnt ground straight up from ford

Posted by AaronC (Member # 86) on :

Straight up is when the ICL (intake centerline), ECL (exhaust centerline) and LSA (lobe separation angle) all line up. Hence the term straight up. So a 112 ICL and 112 ECL will = a 112 LSA. Advance it 2 degrees you get 110 ICL, 114 ECL and 112 LSA. Retard it 2 and you get 114 ICL, 110 ECL and 112 LSA. Oh, the X cam comes with 5 degrees advance built in. So on an accurate chain set on the 0 mark, the ICL would be 107, the ECL is 117, and the LSA is 112.

[ April 01, 2004, 10:37 PM: Message edited by: AaronC ]

Posted by Black94 5.0 (Member # 655) on :

quote:
Originally posted by AaronC:
Straight up is when the ICL (intake centerline), ECL (exhaust centerline) and LSA (lobe separation angle) all line up. Hence the term straight up. So a 112 ICL and 112 ECL will = a 112 LSA. Advance it 2 degrees you get 110 ICL, 114 ECL and 112 LSA. Retard it 2 and you get 114 ICL, 110 ECL and 112 LSA. Oh, the X cam comes with 5 degrees advance built in. So on an accurate chain set on the 0 mark, the ICL would be 107, the ECL is 117, and the LSA is 112.

Awesome, thanks Aaron
[patriot]

Posted by 93PONY (Member # 60) on :

AaronC = The MAN! [worship]

Posted by AaronC (Member # 86) on :

quote:
Originally posted by 93PONY:
AaronC = The MAN!

come on, we both know my car wouldn't be as strong without your knowledge to degree these #'s in. Shaun's help = [worship]

Posted by 91PONY (Member # 206) on :

quote:
Originally posted by AaronC:

quote:
Originally posted by 93PONY:
AaronC = The MAN!
come on, we both know my car wouldn't be as strong without your knowledge to degree these #'s in. Shaun's help =

Awe, you two are so cute! LOL [Razz]

Posted by HYPERSVT (Member # 1707) on :

quote:
Originally posted by 91PONY:

quote:
Originally posted by AaronC:

quote:
Originally posted by 93PONY:
AaronC = The MAN!
come on, we both know my car wouldn't be as strong without your knowledge to degree these #'s in. Shaun's help =
Awe, you two are so cute! LOL

I THINK AARON IS AFTER YOUR MAN HEATHER [Big Grin]

Posted by the50ho (Member # 73) on :

jesus aaron...very nice [patriot]

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