TPI runner balls
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Junior Member

Joined: Apr 2002
Posts: 33
Likes: 2
From: Glen Burnie, MD
Car: '85 Z28 TPI
Engine: 305 F vin
Transmission: 700
Axle/Gears: 3.23 posi 10 bolt
TPI runner *****
I'm about to buy a chrome steel ball from www.mscdirect.com to use for knocking small dings out of my runners. These sell on ebay for $45 for a set of 4 or 5. I'll let you know if one will do the job.
This is from the MSC cart;
Items in Shopping Cart:
qty. item
number your
price extended
price special
notes in stock* delete
Line 1. Chrome Steel ***** Material: Chrome Diameter: 1-7/16
00072983 $14.84 ea $14.84 -- Yes
Sub Total: $14.84
This is from the MSC cart;
Items in Shopping Cart:
qty. item
number your
price extended
price special
notes in stock* delete
Line 1. Chrome Steel ***** Material: Chrome Diameter: 1-7/16
00072983 $14.84 ea $14.84 -- Yes
Sub Total: $14.84
Supreme Member
iTrader: (1)
Joined: Oct 2004
Posts: 3,361
Likes: 1
From: Worcester, MA
Car: 86 T/A
Engine: HSR 355
Transmission: 700R4
Axle/Gears: 2.77 posi
Guess why they sell 4-5 on ebay.
Figured it out yet? It's because you need 4-5 for them to work. Just pushing that through by hand probably won't work, and using tools risk damaging the part you're trying to save. Good luck although its probably cheaper just to get a used set in the classifieds without dents.
Figured it out yet? It's because you need 4-5 for them to work. Just pushing that through by hand probably won't work, and using tools risk damaging the part you're trying to save. Good luck although its probably cheaper just to get a used set in the classifieds without dents.
Joined: Jul 1999
Posts: 1,992
Likes: 10
From: CT
Car: 1986 Camaro SC
Engine: 305 TPI Procharged D1SC
Transmission: Tremec TKO-600
Axle/Gears: Moser 12 Bolt 3.73 posi
yeah you need more than 1, i bought some off ebay, they take out big dents, nothing else, wasnt really satisfied, bought accel large tubes
Junior Member
Joined: Oct 2005
Posts: 34
Likes: 0
From: Warwick NY
Car: 1987 Corvette
Engine: 383 TPI
Transmission: 4+3
Why not buy SLP runners, I got mine delivered for 273 dollars. Ther stock runners suck BIG TIME, maybe the worst part of the setup(as the base really sucks too). In my opinion fixing the horrible stock runners is like buying a diamond ring for a crack *****, or as useful as flushing it down the toilet. The SLP's would give you a solid 10-12 HP and much more if you upgrade the base. I just hate to see people waste money when a little more would put a big smile on your face when you floor it.
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Joined: May 2000
Posts: 588
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From: Oaks,Pa
Car: 89 IROC
Engine: 350 HSR
Transmission: modified 700R4
Axle/Gears: 3.42
Wasn't thinking of fixing them performance wise just get the dents out for looks.And my combo runs better times with the stock runners than the ported SLP on the 305
Junior Member
Joined: Oct 2005
Posts: 34
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From: Warwick NY
Car: 1987 Corvette
Engine: 383 TPI
Transmission: 4+3
Thats hard to imagine, I saw several SLP runners installed when I was in Lincoln Tech and they did before and after dyno pulls on all 5 cars which had various work, but the worst I ever saw was 9 RWHP increase on a stock 305 firebird, 3 were modified and made 12-18 RWHP depending on the car. Why would your car run faster with an intake that stops flowing at 4700 RPM? Or is the sytem modified in other ways that I don't know about? Maybe TPIS's Large tube runners instead? But I am still lost as to why your car would run better with a worse flowing set of runners. Any car from a Honda to a Ferrari will create more power from a more free flowing intake? Please do explain.
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From: Oaks,Pa
Car: 89 IROC
Engine: 350 HSR
Transmission: modified 700R4
Axle/Gears: 3.42
Originally posted by stubbs
Thats hard to imagine, I saw several SLP runners installed when I was in Lincoln Tech and they did before and after dyno pulls on all 5 cars which had various work, but the worst I ever saw was 9 RWHP increase on a stock 305 firebird, 3 were modified and made 12-18 RWHP depending on the car. Why would your car run faster with an intake that stops flowing at 4700 RPM? Or is the sytem modified in other ways that I don't know about? Maybe TPIS's Large tube runners instead? But I am still lost as to why your car would run better with a worse flowing set of runners. Any car from a Honda to a Ferrari will create more power from a more free flowing intake? Please do explain.
Thats hard to imagine, I saw several SLP runners installed when I was in Lincoln Tech and they did before and after dyno pulls on all 5 cars which had various work, but the worst I ever saw was 9 RWHP increase on a stock 305 firebird, 3 were modified and made 12-18 RWHP depending on the car. Why would your car run faster with an intake that stops flowing at 4700 RPM? Or is the sytem modified in other ways that I don't know about? Maybe TPIS's Large tube runners instead? But I am still lost as to why your car would run better with a worse flowing set of runners. Any car from a Honda to a Ferrari will create more power from a more free flowing intake? Please do explain.
Junior Member
Joined: Oct 2005
Posts: 34
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From: Warwick NY
Car: 1987 Corvette
Engine: 383 TPI
Transmission: 4+3
Wow thats crazy. One thing, you said you had a siamesed plennum, how with stock runners? Wouldn't it just be a solid flange? That would defeat the purpose of the siamese wouldn't it?
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From: Oaks,Pa
Car: 89 IROC
Engine: 350 HSR
Transmission: modified 700R4
Axle/Gears: 3.42
And these are the stock runners since I've been the only owner of this IROC.Have made over 10 runs in the 13's with the stock runners but with the ported SLP's never better than 14.0's
Last edited by IROCZ4BD3; Dec 31, 2005 at 03:42 PM.
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Joined: Oct 2005
Posts: 34
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From: Warwick NY
Car: 1987 Corvette
Engine: 383 TPI
Transmission: 4+3
What are the 60' times, my only guess could be that the smaller runners are giving you a tad more low end torque and could improve your 60' x's, but then your trap speed would be lower? Maybe the port work on the plennum kind of messed it up if not done properly, it really is an art, because there is no other explanation, a higher rev limit should lower your times, that really is weird???
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From: Oaks,Pa
Car: 89 IROC
Engine: 350 HSR
Transmission: modified 700R4
Axle/Gears: 3.42
Originally posted by stubbs
What are the 60' times, my only guess could be that the smaller runners are giving you a tad more low end torque and could improve your 60' x's, but then your trap speed would be lower? Maybe the port work on the plennum kind of messed it up if not done properly, it really is an art, because there is no other explanation, a higher rev limit should lower your times, that really is weird???
What are the 60' times, my only guess could be that the smaller runners are giving you a tad more low end torque and could improve your 60' x's, but then your trap speed would be lower? Maybe the port work on the plennum kind of messed it up if not done properly, it really is an art, because there is no other explanation, a higher rev limit should lower your times, that really is weird???
Thread Starter
Junior Member

Joined: Apr 2002
Posts: 33
Likes: 2
From: Glen Burnie, MD
Car: '85 Z28 TPI
Engine: 305 F vin
Transmission: 700
Axle/Gears: 3.23 posi 10 bolt
I'm fairly creative with metal, so who says you need 5 STEEL *****. I'm confident it will be fine for my little red wagon and i'll lose the stinkin' holley.
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