what to expect from well built tpi.
01-13-2013, 10:38 PM
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Car: 1988 IROC-Z Camaro, 1981 Trans Am
Engine: 350 TPI, 301 N/A
Transmission: 700r4, 350thm
what to expect from well built tpi.
I am trying to decide what intake setup to use, carb, tpi, and I've even been tossing around the idea of an lt1 intake swap.
What I would like to know is what can a tpi intake be built to handle? Can a tpi intake be built to support 350hp? 400? What is a modified tpis limitation? I know there are people who siamese the runners and port out the plenum intake manifold runners to the max to provided better airflow. I also know there are edelbrock and tpis runners which are one big oval shaped runner which will supply more airflow. What is the best way to get the most airflow?
For my build I am hoping to make power to 5500 but redline at 6k. Thanks
What I would like to know is what can a tpi intake be built to handle? Can a tpi intake be built to support 350hp? 400? What is a modified tpis limitation? I know there are people who siamese the runners and port out the plenum intake manifold runners to the max to provided better airflow. I also know there are edelbrock and tpis runners which are one big oval shaped runner which will supply more airflow. What is the best way to get the most airflow?
For my build I am hoping to make power to 5500 but redline at 6k. Thanks
01-13-2013, 11:39 PM
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Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: what to expect from well built tpi.
https://www.thirdgen.org/forums/tech...yone-talk.html
I know there are people who siamese the runners and port out the plenum intake manifold runners to the max to provided better airflow. I also know there are edelbrock and tpis runners which are one big oval shaped runner which will supply more airflow.
What is the best way to get the most airflow?
What is the best way to get the most airflow?
More potential and cheaper
https://www.thirdgen.org/forums/alte...-h-p-goal.html
https://www.thirdgen.org/forums/alte...-bolt-hsr.html
https://www.thirdgen.org/forums/tpi/...ds-should.html
01-14-2013, 12:17 AM
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Car: 92 T/A 'vert
Engine: Mild .040 over L98 4 bolt mains
Transmission: Mostly stock 700R4, 2600 Vigilante
Axle/Gears: LS1 3.42
Re: what to expect from well built tpi.
Dyno Don and his group from SoCal are 100HP past me, emission legal, no less!
01-14-2013, 08:27 AM
#4
Re: what to expect from well built tpi.
N/A a stock style T.P.I. will be hard to get over 300rwhp. And, that's with good heads, LTs, nice sized cam, etc.
For a budget TPI upgrade, port the base, siamese the plenum, and get some used SLP runners.(also port matched). Add spray and enjoy
For a budget TPI upgrade, port the base, siamese the plenum, and get some used SLP runners.(also port matched). Add spray and enjoy
01-14-2013, 08:33 AM
#5
Re: what to expect from well built tpi.
Over the years i think i have seen 300-350 whp with conventional long tube aftermarket tpi. Buttloads of torque tho. 400-500 lb ft. Thats some pep
Rpm limited in long tube design of current diameters on the market. To get much more power you need to either build bigger tubes and mate to custom enlarged base ($$$) or siamese runners to shorten things to gain rpm potential.
You are sucking air thru a long straw... Its easiest to suck thru a larger diameter straw if it has to be long or a very short straw.
Rpm limited in long tube design of current diameters on the market. To get much more power you need to either build bigger tubes and mate to custom enlarged base ($$$) or siamese runners to shorten things to gain rpm potential.
You are sucking air thru a long straw... Its easiest to suck thru a larger diameter straw if it has to be long or a very short straw.
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