C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

good porting services?

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Old Aug 25, 2017 | 11:52 PM
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Default good porting services?

Looking to get my runners and plenum ported. Any good porting services on here?
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Old Aug 26, 2017 | 12:54 AM
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Where are you located?
Theres a butt load of speed shops offering porting.
You wanna drive to the best or cover the freight?

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Old Aug 26, 2017 | 01:30 AM
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Depends on what options are available. I am in Sacramento.
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Old Aug 29, 2017 | 05:51 PM
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Originally Posted by CaliC4
Depends on what options are available. I am in Sacramento.
I got a quote this summer for extrude hone, which is an abrasive material removal process. Very cool, but way too much for me.

Extrude Hone AFM
8800 Somerset Blvd
Paramount, CA 90723

CHEVY TPI RUNNERS 300.00
CHEVY TPI LOWER INTAKE MANIFOLD 550.00
CHEVY TPI UPPER INTAKE MANIFOLD 260.00
CHEVY TPI COMBINATION (INCLUDES RUNNERS,
LOWER INTAKE, & UPPER INTAKE) 800.00
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Old Aug 29, 2017 | 06:05 PM
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Originally Posted by ryank9398
I got a quote this summer for extrude hone, which is an abrasive material removal process. Very cool, but way too much for me.

Extrude Hone AFM
8800 Somerset Blvd
Paramount, CA 90723

CHEVY TPI RUNNERS 300.00
CHEVY TPI LOWER INTAKE MANIFOLD 550.00
CHEVY TPI UPPER INTAKE MANIFOLD 260.00
CHEVY TPI COMBINATION (INCLUDES RUNNERS,
LOWER INTAKE, & UPPER INTAKE) 800.00
Yea for that price you can just by the whole aftermarket intake set up
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Old Aug 29, 2017 | 06:23 PM
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Originally Posted by CaliC4
Yea for that price you can just by the whole aftermarket intake set up
Bingo!!! in 2017 DO NOT waste money on the stock tpi.

Decades full of people who ended up out growing the stock junk. Nothing about stock = performance.

I bought a MR and injectors for $650 one time.

Last edited by pologreen1; Aug 29, 2017 at 06:24 PM.
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Old Aug 30, 2017 | 08:30 PM
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If you are in California and need to smog the car you are kind of screwed.Anything that isn't stock needs a CARB EO number.Finding legal parts for an old l98 is alomost impossible.
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Old Aug 30, 2017 | 09:29 PM
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I have the luck of having many engine rebuilding shops in Mooresville, NC (NASCAR country). I would need to pull the bill to be positive but I believe the cost of porting the intake, runners, and heads on my 88 was less than $300.
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Old Aug 30, 2017 | 11:59 PM
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Do you name of place & # PLS.
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Old Aug 31, 2017 | 08:36 AM
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800 for a real aggressive job on the whole TPI isnt bad at all IF they are truly going all out

300 for heads and intake? Heads are usually 500-1k depending what you get done

Last edited by cv67; Aug 31, 2017 at 08:37 AM.
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Old Aug 31, 2017 | 08:02 PM
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Originally Posted by cuisinartvette
800 for a real aggressive job on the whole TPI isnt bad at all IF they are truly going all out

300 for heads and intake? Heads are usually 500-1k depending what you get done




Bill for rebuilding and porting back in March 2012.




I was a little off on my estimate for porting heads, intake,, & runners. $150.

Last edited by HAD2HAV2; Aug 31, 2017 at 08:05 PM.
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Old Sep 1, 2017 | 06:23 AM
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Originally Posted by pologreen1
Bingo!!! in 2017 DO NOT waste money on the stock tpi.

Decades full of people who ended up out growing the stock junk. Nothing about stock = performance.

I bought a MR and injectors for $650 one time.
-- about the best you can do is a little pocket porting and gasket matching. I doubt you'll see much in the way of SOTP. I remember seeing something about porting the factory TPI, and while they did gain some CFM, IMO, it really wasn't worth the effort.

Last edited by Joe C; Sep 1, 2017 at 07:29 AM.
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