[psfracer]

OK, so I posted this on two other boards also, but hey, why play favorites? Need to post here to.

My goal has always been to run 10.60's so I can run in the PSCA 10.60 class. With the stock whipple intake setup and a BBK throttle body, my best however has only been a 10.77 @ 125.82mph. I knew of Adam's intake work with the KB's so I thought we would try the same thing with the whipple.

I wanted to see what difference the ST sheet metal supercharger intake, the accufab throttle body, and the ST intake tube would make. Even though I have had my car dyno'd many times before, we decided to re-dyno everything in back to back tests to really see what difference this setup was worth.

All of the following dyno runs were made within 3 hours of each other. The first dyno run was made at 63 degrees where as the last dyno run was made at 58 degrees. NO TUNE CHANGES, NO PULLEY CHANGES, just the intake setup and thats it. All numbers are SAE. Uncorrected the numbers were actually higher.

Some basics about the car: whipple @ 16psi, stock heads, stock cams, dynatech 1 3/4 primary pipe to 3 inch collector long tube headers, x-pipe, no cats. 3300 PI stall converter with the 5speed AUTO. 4.10 gears, various suspension parts.

First was to dyno the stock whipple system along with the stock throttle body. With this set up and the same exact tune, I ran a 11.32 @ 119 at Ca Speedway in October at FFW. With two baseline passes, the numbers that came back were as follows:

Run#1: 483.62rwhp / 456.70rwtq
Run#2: 484.49rwhp / 457.95rwtq

Now, one might say that is low for a whipple at 16psi. But that was exactly my point---because of the stock throttle body being the restriction, there was really no difference at all in power between the whipple at 13psi and at 16psi. (A few months ago I was running at 13psi with very similar numbers)

Next test was really just for me, as I wanted to see exactly what the numbers were with the BBK throttle body and stock whipple setup. With this setup, I ran a best 10.77 @ 125.82 mph at FAMOSO in November.

That dyno run came back at 511rwhp. So this throttle body on a whipple running 16psi, with no other changes, was worth 27rwhp. This in my opinion proved that the stock throttle body was indeed a big part of the restriction once you decide to go over 13psi on a twin screw supercharger.

Next up, Adam pulled off the stock setup and put on the sheet metal intake, the accufab wide mouth throttle body (1600+cfm) and a larger intake tube which also runs outside the engine compartment (like the KB setup).

We ran three dyno runs with the following results:

Run #1: 576.90rwhp / 517.51rwtq +92rwhp over baseline
Run #2: 565.50rwhp / 519.28rwtq +81rwhp over baseline
Run #3: 571.43rwhp / 518.24rwtq +87rwhp over baseline

Remember, this is an auto to boot---so with a manual this car would be 600rwhp!

Since I have already ran a 10.77 @ 511 rwhp, I can't wait to get back to the track with 577rwhp---I am hoping for 10.4X's!

Here are some pictures which include:
1) the stock whipple set up with the BBK throttle body
2) the ST Motorsports intake setup (577rwhp)
3) picture of the three different throttle bodies
4) picture comparing the stock whipple intake vs the sheet metal intake
5) dyno graph
6) various other pictures

Here is the link to the dyno video:

whipple with ST Motorsports intake setup - Video

So, to sum up I am very pleased to say the least about the results with this set up. I will post up the new ET's when I head back to the track, which should be by January 10th.

By the way, I saw two 3.4 whipple superchargers at ST today---wonder who is getting those......

[EagleAutosports]

Some stout stout numbers. You'll definately knock some ET off with that.

[tripleblack]

Congratulations on your successful tests!

That ST sheetmetal intake / Accufab combo is obviously doing the job.

I can't tell from the photo, but are you removing a fog light to get cold/ram air flowing to the intake?

I think you are looking at achieving your goals, so long as you don't have traction problems off the line. Are you changing anything with the rear suspension, wheels or tires due to the big increase in power?

Well-written article, too.

Looks like you could interest MMFF or 5.0 with your story.

stan

Originally Posted by psfracer

OK, so I posted this on two other boards also, but hey, why play favorites? Need to post here to.

My goal has always been to run 10.60's so I can run in the PSCA 10.60 class. With the stock whipple intake setup and a BBK throttle body, my best however has only been a 10.77 @ 125.82mph. I knew of Adam's intake work with the KB's so I thought we would try the same thing with the whipple.

I wanted to see what difference the ST sheet metal supercharger intake, the accufab throttle body, and the ST intake tube would make. Even though I have had my car dyno'd many times before, we decided to re-dyno everything in back to back tests to really see what difference this setup was worth.

All of the following dyno runs were made within 3 hours of each other. The first dyno run was made at 63 degrees where as the last dyno run was made at 58 degrees. NO TUNE CHANGES, NO PULLEY CHANGES, just the intake setup and thats it. All numbers are SAE. Uncorrected the numbers were actually higher.

Some basics about the car: whipple @ 16psi, stock heads, stock cams, dynatech 1 3/4 primary pipe to 3 inch collector long tube headers, x-pipe, no cats. 3300 PI stall converter with the 5speed AUTO. 4.10 gears, various suspension parts.

First was to dyno the stock whipple system along with the stock throttle body. With this set up and the same exact tune, I ran a 11.32 @ 119 at Ca Speedway in October at FFW. With two baseline passes, the numbers that came back were as follows:

Run#1: 483.62rwhp / 456.70rwtq
Run#2: 484.49rwhp / 457.95rwtq

Now, one might say that is low for a whipple at 16psi. But that was exactly my point---because of the stock throttle body being the restriction, there was really no difference at all in power between the whipple at 13psi and at 16psi. (A few months ago I was running at 13psi with very similar numbers)

Next test was really just for me, as I wanted to see exactly what the numbers were with the BBK throttle body and stock whipple setup. With this setup, I ran a best 10.77 @ 125.82 mph at FAMOSO in November.

That dyno run came back at 511rwhp. So this throttle body on a whipple running 16psi, with no other changes, was worth 27rwhp. This in my opinion proved that the stock throttle body was indeed a big part of the restriction once you decide to go over 13psi on a twin screw supercharger.

Next up, Adam pulled off the stock setup and put on the sheet metal intake, the accufab wide mouth throttle body (1600+cfm) and a larger intake tube which also runs outside the engine compartment (like the KB setup).

We ran three dyno runs with the following results:

Run #1: 576.90rwhp / 517.51rwtq +92rwhp over baseline
Run #2: 565.50rwhp / 519.28rwtq +81rwhp over baseline
Run #3: 571.43rwhp / 518.24rwtq +87rwhp over baseline

Remember, this is an auto to boot---so with a manual this car would be 600rwhp!

Since I have already ran a 10.77 @ 511 rwhp, I can't wait to get back to the track with 577rwhp---I am hoping for 10.4X's!

Here are some pictures which include:
1) the stock whipple set up with the BBK throttle body
2) the ST Motorsports intake setup (577rwhp)
3) picture of the three different throttle bodies
4) picture comparing the stock whipple intake vs the sheet metal intake
5) dyno graph
6) various other pictures

Here is the link to the dyno video:

So, to sum up I am very pleased to say the least about the results with this set up. I will post up the new ET's when I head back to the track, which should be by January 10th.

By the way, I saw two 3.4 whipple superchargers at ST today---wonder who is getting those......

[stlwagon]

That's huge Paul...Those numbers will translate well on the track! Amazing what a little extra will do. So the Accufab is a single port TB? Guess that little restriction in the middle makes a difference!

[psfracer]

Originally Posted by tripleblack

I can't tell from the photo, but are you removing a fog light to get cold/ram air flowing to the intake?

I think you are looking at achieving your goals, so long as you don't have traction problems off the line. Are you changing anything with the rear suspension, wheels or tires due to the big increase in power?

stan

The air cleaner is moved to underneath the headlight. The attached pics below shows how its done. The ABS box thingy needs to be relocated and there is some cutting involved Its high enough where its completely behind the fenderwell, but low enough to where its taking the cold air from outside.

As far as traction, I have the normal stuff -- che uca adjusted to -4 degree pinion angle, J&M lca's, CHE anti squat brackets, MMR rear coil over kit with lakewood 50/50 drag shocks, and M&H 325/45/17 tires. This combo has been good for 1.490 60' times so far, so hopefully it will be up to the task. The car already lifted the wheels with the 511rwhp set up, so I know the suspension is working.

[psfracer]

Originally Posted by stlwagon

That's huge Paul...Those numbers will translate well on the track! Amazing what a little extra will do. So the Accufab is a single port TB? Guess that little restriction in the middle makes a difference!

Yep, the accufab throttle body that was used is the mono blade, or wide mouth as some people call it. It flows over 1600 cfm.

I think that the higher boost you want to go with, the larger the difference this set up would make. I have no idea if it would make any difference at all at lets say 10psi, but at 16 (or higher) it most definitely will.

[psfracer]

OOPS, made a mistake. The mono blade throttle body is made by BLACK DIAMOND, not accufab.

[slvrstang2007]

Wow amazing setup! Can't wait to see your track numbers, by the way what forged internals did you go with and where did you get them from?

[psfracer]

JE pistons, scat rods, cobra crank, ST Motorsports in San Bernardino, CA built the engine.