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  #21  
Old 01-12-2022, 06:05 PM
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Was the T2 ported for a 4500 carb?
Any pics of it?

  #22  
Old 01-12-2022, 06:15 PM
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Quote:
Originally Posted by slowbird View Post
Was the T2 ported for a 4500 carb?
Any pics of it?
Not actually ported to a 4500 but with some grinding to open up an adapter I think it may really like one? It liked a 2" spacer with the 4150
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  #23  
Old 01-12-2022, 07:03 PM
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I'm doing a 350P now, great to see your post. Can I ask a few questions? As-cast the KRE chambers are 65 cc, what size did you end up with after working the heads? Did you find you needed the block eyebrows with the small valves?

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  #24  
Old 01-12-2022, 07:18 PM
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You topped the big blowhards 350 in power, well done.

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Old 01-12-2022, 07:19 PM
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Quote:
Originally Posted by darbikrash View Post
I'm doing a 350P now, great to see your post. Can I ask a few questions? As-cast the KRE chambers are 65 cc, what size did you end up with after working the heads? Did you find you needed the block eyebrows with the small valves?
The heads as cast as delivered were actually 70cc. After my mods they were 77cc. I had them milled .100"(yes you read that correctly) and they landed at 62cc.

I did not need the notches for clearance....those valves would free drop down the bores... barely, but they did clear. But when I added the notches to the bore fixture it made a HUGE difference in airflow

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Old 01-12-2022, 07:28 PM
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Quote:
Originally Posted by 455Grandville View Post
You topped the big blowhards 350 in power, well done.
Thank you!
When I built my 1.0 version it made 385hp/425tq with 8.8comp, flat tappet cam and mildly ported iron heads I was pretty proud. Posted it on a FB group and he basically told me it was a joke and NO ONE would ever beat his "King 350". Challenge accepted!😎

Where I differ from him is I hope someone now realizes these little guys have potential and instead of scrapping one builds one better than this one. Pretty sure I could have topped 600 with this one but Mama told me it needed perfect street manners. Little cam made for a helluva torque curve though

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  #27  
Old 01-12-2022, 08:36 PM
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Very nice!

  #28  
Old 01-12-2022, 11:11 PM
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Seems the 3- Intakes are within measurement error. But my real point is to wonder which Intake promotes the best acceleration under load in the 1/4 mile.

  #29  
Old 01-13-2022, 12:39 AM
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Quote:
Originally Posted by Half-Inch Stud View Post
Seems the 3- Intakes are within measurement error. But my real point is to wonder which Intake promotes the best acceleration under load in the 1/4 mile.
Luckily they sure will be easy to check at the track!

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  #30  
Old 01-13-2022, 01:24 AM
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Quote:
Originally Posted by POS Racing View Post
... Recently had a set of KRE CNC chamber heads here and it was completely opposite....lost 15cfm by. 500 and kept getting worse from there. Same with the E heads I originally started the build with...
Who'da thunk?

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  #31  
Old 01-13-2022, 04:52 AM
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Congrats and thanks for sharing your results.

Kris.

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  #32  
Old 01-13-2022, 09:21 AM
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Very nice engine! Who needs a 421 etc. to make power?

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  #33  
Old 01-13-2022, 11:29 AM
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After watching Engine Masters within the last week on Motor Trend they had a NA 350 chevy that they dynoed, and you exceeded their numbers. When you're able to exceed the engine that has had more development time, and money thrown at it in the last 65 years, you have really done something well....

Nothing I like better than to see a chevy beaten by a Pontiac on an equal playing field. As long as your car hooks, your gonna break some hearts.....LOL

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Old 01-13-2022, 12:37 PM
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How does a 350 block compare in strength to a 400 block? Does anyone know ?

Great numbers! Nice to see this ...

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  #35  
Old 01-13-2022, 12:42 PM
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Great job!

Since this is the street forum, I hope you are better at traction control than I. First gear on mine (only 430 HP) is worthless on the street when driving in anger

Jon.

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  #36  
Old 01-13-2022, 04:15 PM
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While we are handing out over due applause for killer Pontiac 350 motors let’s go back to 1974 and Burt Straus and his Sunbird that I saw run a 8.85 in the 1/4 mile early that Summer.
It was well worth my two flat tires that I had to deal with to get to Englishtown and see that take place!

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  #37  
Old 01-13-2022, 04:26 PM
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Nice work! Thanks for sharing.

  #38  
Old 01-13-2022, 04:35 PM
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Quote:
Originally Posted by steve25 View Post
While we are handing out over due applause for killer Pontiac 350 motors let’s go back to 1974 and Burt Straus and his Sunbird that I saw run a 8.85 in the 1/4 mile early that Summer.
It was well worth my two flat tires that I had to deal with to get to Englishtown and see that take place!
Steve,
I saw Burt at Englishtown also (not sure what year). While he had to run factor iron heads, most of the ports (intake and exhaust) were nowhere the factory location That is what could seen just looking at the engine. Have no idea what one might have seen looking at the head from the combustion chamber side.

Stan

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  #39  
Old 01-13-2022, 04:50 PM
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For years, Tom S. and I have been discussing WHY so many Pontiac guys dismiss the 350P. Tom has advocated for a stock stroke, stock rod length build using either the KRE or E-heads. This build SHOULD open eyes AND minds to the potential of the 350P when properly planned, engineered and built.

POS Racing, I’m going to assume you utilized an LS piston blank and ring pack with your pistons?

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  #40  
Old 01-13-2022, 05:15 PM
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Stan, I never got the chance to track him down in the pit’s to see the car.
As I recall a thunder storm rolled in and I headed home.
Is he still with us, does anyone know or has he passed?

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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!

1) 1940s 100% silver 4 cup tea server set.

Two dry rotted 14 x 10 Micky Thompson slicks.

1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.

Education is what your left with once you forget things!
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