1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

How can i tell if my 13b is Street Ported?

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Old 09-27-10, 04:16 PM
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Originally Posted by Keith13b
From the photos, I can not determine if it was ported or not, but I can tell you by the looks of it , that it wasn't ported correctly if it was ported at all. You can still see casting marks on the intake and a true port would enlarge the entire runner and match the LIM.

If the motor has strong compression - you got a good deal; regardless.
This motor has GREAT compression by the sound. I dont have a gauge. Needless to say a good running, freshly rebuilt 13b for my SA, good deal.
Old 09-28-10, 02:04 AM
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The intake is ported, how much/how well, who knows. The porting was never sanded because I can still see the 'scoop' marks left by the porting bur. No opinion on the exhaust but it doesn't always need porting, Depends on the size of the intake porting whether the exhaust really needs porting. If the engine is low miles you got a good deal.

If you've had a good relationship with the seller I see no reason to doubt him now.
Old 09-28-10, 05:24 AM
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Originally Posted by trochoid
The intake is ported, how much/how well, who knows. The porting was never sanded because I can still see the 'scoop' marks left by the porting bur. No opinion on the exhaust but it doesn't always need porting, Depends on the size of the intake porting whether the exhaust really needs porting. If the engine is low miles you got a good deal.

If you've had a good relationship with the seller I see no reason to doubt him now.
That is correct. I have always had a problem with listening to everyone else, besides who i "should" listen to. My wife tells me that all the time. What i dont understand is why is the exhaust sleeves taken out?
Old 09-28-10, 09:56 AM
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For better exhaust flow and it may be ported. Can't tell from the pic. A side by side comparison with a stock housing will answer that.
Old 09-28-10, 10:22 AM
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It is ok to remove 74 sleeves.
Old 09-28-10, 12:09 PM
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^good to know.
Old 09-28-10, 04:46 PM
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Originally Posted by rxtasy3
^good to know.
What kind of HP to you think you are making with that setup? The only diffrence i will be running a Holley 650 and a Racing Beat Race exhaust set up. Duals all the way back.
Old 09-28-10, 06:20 PM
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mine is running the streetport exhaust setup minus the dual presilencers. i went to a meet a while back with the crossroads guys where they were having a dyno day. decided to put mine on it just for the hell of it. it claimed 191 at the wheels but that was a 3rd gear pull. i always thought they were done in 4th. but the guy said to let him know when i got to 3rd.
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