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Intake Compare
This is a price comparison, and in some cases dyno comparison, of the various TPI intakes and alternates. Prices came from either Summit Racing or the companies respective sites. Now, we all know you can get some of this stuff used, make the fuel lines yourself, or in the LT1 intake, get one and modify it yourself. And there are other costs associated with installing and running these intakes (gaskets, PROM burning, hoses, etc..). But, some people can do PROM tuning their selves. And so, those casts are variables and not included here. Here is what it cost me to swap to the HSR. Links to the sites are in yellow. The cheapest is the LT1 intake. The most expensive being the Miniram and Superram. All have their strong and weak points. It just depends on what you want.
For stock motors ( no internal changes), the Edelbrock, SLP/Edelbrock, and the Accel/Lingenfelter setup would be a better choice. For mild to wild ( heads, cam, larger cubic inches), the HSR, LT1, and TPIS would be a better choice. And in this area, it can be broken down a little more. The HSR gives a broader midrange torque, and have good higher RPM (3200 -6500), as compared to the LT1 and TPIS. This is because of the longer runner design as compared to the LT1 and TPIS. The LT1 and TPIS would be better high RPM intakes (4000-7500). This is because of the shorter runner design. Overall, the best bang for the buck will be the HSR and LT1 intakes.
Thanks goes out to Mike Davis (Hi-flow TPI vs Miniram vs HSR), Tom Casey (Superram vs LT1), and Robert Hinton (SLP/Edelbrock vs HSR) for their efforts in doing all this work.
Here are some dynos comparing various intake swaps:
SLP/Edelbrock vs HSR- The SLP
runners were completely siamesed. Meaning the divider was cut out completely
except at the end where it mates to the intake. In this dyno, the SLP/Edelbrock
was tuned. The HSR was not. Evidenced by the air/fuel ratio at the bottom.
Superram vs LT1 - In this
dyno, the Superram had many hours tuned. The LT1 had some tuning done to it.
Evidenced by the air/fuel ratio graph at the bottom.
Hi-flow TPI vs HSR - The TPI base was siamesed 3" inward.
HSR
7540 Intake
$300.00
534-186 Fuel Rails w/Adjustable regulator
$220.00
Fuel Line Kit
$120.00
Thermostat Housing (MR Gasket 2661)
$14.00
Total $654.00
LT1
Intake w/Fuel
Rails
$400.00
Fuel Line Kit
$85.00
Thermostat Housing
$65.00
Total $550.00
Edelbrock
3890 Runners and
Base
Total $690.00
SLP/Edelbrock
SLP runners
$260.00
Edelbrock Base
$376.00
Total $636.00
Accel/Lingenfelter
74195 Long Tube Runners
$400.00
74197 Base
$460.00
Total $860.00
OR
74196 Superram Plenum
$800.00
74197 Base
$460.00
Total $1260.00
TPIS
500-518 Miniram Intake
$895.00
500-508 Fuel Rail Kit
$355.00
Total $1250.00
