SBC To Stude - V8 Intake Adapter Plates Project

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SilverHawkDan
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Re: SBC To Stude - V8 Intake Adapter Plates Project

Post by SilverHawkDan »

OK the first numbers are in. So just how much difference would a set of these adapter plates make on a stock 259 Stude? Well I was able to complete the first test today and while there is a carb issue that needs to be dealt with it was none the less interesting. For some reason now that the WCFB is on the SBC manifold the air flapper does not open until about 3700 rpm. So no secondaries until then. SO that might be a good thing or a bad thing. More research needed but here are the numbers: I HAVE EDITED THE NUMBERS TO BETTER REFLECT WHAT THEY MEAN. Thank you Jeff for pointing out my ability to create confusion. Sometimes I post without going back and reading my post first.

0 to 30 mph Best recorded time in the previous three runs 3.98 sec. After manifold change 3.81 sec. or -.18 seconds quicker
0 to 60 mph Best of previous runs 10.40 sec. After 9.66 or -.74 seconds quicker
0 to 90 mph Best of previous runs 22.04 sec. After 18.74 or -3.3 seconds quicker
0 to 100 mph Best of previous runs 29.55 sec. After 26.46 or -2.9 seconds quicker
0 to 110 mph Best of previous runs 41.42 sec. After 39.55 or -1.87 seconds quicker

So the car accelerated faster from stop to 100 mph. Actual speed is 105 to 106 mph with speedometer correction. As you can see the set up seemed to offer the most improvement after 60 mph. the 0 to 90 improvement of a little over 3 seconds is quite a lot for no other changes. Other things I noticed were the car was still pulling strong up to 4800 rpm and I am certain it will still be pulling at 5000. Before I shifted at 4300 at it felt like it was leveling off. I was not surprised to see after the run that the 0 to 110 was faster as I let off the gas as the speedometer reached that speed and I was quite a bit short of where I let off in the previous three runs. So although there is work to be done this first test shows that there is improvement to be found in using the adapter plates. Stock 259 Studebaker 1956 engine, SBC Edelbrock S.P.2.P manifold set up for Quadrajet with 1" spacer and stock Chevy WCFB carb with stock jetting. Personally I think that when I switched to a modern carb things will only get better. There you have it the first performance test.
Dan
So Jeff I would be interested in seeing how this compares to one of the custom welded manifolds which I am sure would be even better. As you can tell I love doing this kind research.
Grew up Studebaker. Drag raced successfully in Southern California. Flew down the salt in the Burke Avanti in 2010 at 159 mph as the Bucket List Dream Avanti. Now part of the Dutch Treat Racing Team, Super Lark driver/team member.
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Jeff Rice
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Re: SBC To Stude - V8 Intake Adapter Plates Project

Post by Jeff Rice »

Most of my intakes (and stock intakes) have already been flowed on a flow bench. With and without a carb.
Many customers have supplied their feedback on performance gains.
If you want to test one for yourself, intakes are available for purchase.
Thank you for your interest.
Jeff 8)


SilverHawkDan wrote: 24 Jan 2018, 23:00 <snip>
So Jeff I would be interested in seeing how this compares to one of the custom welded manifolds which I am sure would be even better. As you can tell I love doing this kind research.
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3x2stude
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Re: SBC To Stude - V8 Intake Adapter Plates Project

Post by 3x2stude »

I am still planning on another run of adapters in mid April. Anyone still interested can PM me. Last count I had five willing to commit and that is all I need to do a run of ten sets. If you contacted me with interest since the first run PM or email me again and we can get this going.

JK
SilverHawkDan
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Re: SBC To Stude - V8 Intake Adapter Plates Project

Post by SilverHawkDan »

Jon,

After a successful weekend trip I installed the Holley carb today. What a difference. Cold start up was a lot better. Idle quality is much better and by that I mean much smoother. Idle speed is 650 and in gear 550. Throttle response is quicker out of gear but it will have to wait until tomorrow for a road test. Was way to cold in the shop and with no heater in the car, not for me. Hope to take it out and dial it in tomorrow and performance tests on Tuesday. Best part is the carb is only 3 7/8" from bottom of base plate to air horn where as the WCFB is 4 15/16", so the air cleaner in barely sticking out of the hood. If a square bore manifold was used and the 1" adapter plate removed a regular air filter could be used. Pictures tomorrow.
Dan
Grew up Studebaker. Drag raced successfully in Southern California. Flew down the salt in the Burke Avanti in 2010 at 159 mph as the Bucket List Dream Avanti. Now part of the Dutch Treat Racing Team, Super Lark driver/team member.
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3x2stude
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Re: SBC To Stude - V8 Intake Adapter Plates Project

Post by 3x2stude »

I am going to do another run on SBC intake manifold to Studebaker V8 engine. Let me know who is still interested. They will need to sell for $425.00 a set, this includes shipping in the lower 48. I will ship anywhere and at cost. The last ones were slightly less but the price 13 months ago was based on an 18 month old quote then. The $425.00 is based on a current quote received today. Prepayment is not needed for me to order the run but would be appreciated. Reply here if interested, PM me if you want to order.

JK
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3x2stude
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Re: SBC To Stude - V8 Intake Adapter Plates Project

Post by 3x2stude »

FYI,

A purchase order was placed last Friday, 6 -8 week lead time. Send a PM to order. Include your contact information.


JK
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3x2stude
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Re: SBC To Stude - V8 Intake Adapter Plates Project

Post by 3x2stude »

I picked up another batch of intake manifold adapters from W/S Machine today. The adapters allow you to install a small block Chevrolet manifold on a Studebaker V8. They are CNC machined from 6061 aluminum. The Studebaker bolt pattern is counter bored so they are attached to the block using socket head cap screws. The Chevy pattern has stainless steel thread inserts, (not “heli-coils”, inserts), for long thread life. They come with complete instructions. Gaskets and fasteners to use are listed in the instructions but not provided. Ten sets were made and two are sold. $425.00 includes USPS priority mail. PM me if you are interested in a set.


JK
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Jeff Rice
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Re: SBC To Stude - V8 Intake Adapter Plates Project

Post by Jeff Rice »

They look great,Jon!
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3x2stude
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Re: SBC To Stude - V8 Intake Adapter Plates Project

Post by 3x2stude »

Six sets left.
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3x2stude
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Re: SBC To Stude - V8 Intake Adapter Plates Project

Post by 3x2stude »

I still have several sets of these left if anyone is interested. I would also appreciate any feedback from those that have bought and installed them, good or bad. So far Dan is the only one to install and run and give us data. I have the prototype done and still plan to produce the Caddy to SBC version next summer but that is a post for a different section.

JK
Mike Van Veghten
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Re: SBC To Stude - V8 Intake Adapter Plates Project

Post by Mike Van Veghten »

I've port matched my set to my cylinder heads, and did a little contouring to them.
I can't finish them until the engine is assembled. Because of the material that I had removed from the deck of my block to "zero deck" my combination, I'll probably have to remove some metal from them to get the manifold to sit so the ports line up correctly, but...looking forward to the whole thing..!
I've got my Crossram manifold, most probably will get another manifold for the same engine.

I did the same thing to a set that another Stude fan bought. I've ported a set of heads for him, and match ported his set of adapters also.

Hmm, that makes me think, maybe a second set for me..?
I need to whittle them down a bit, get a bunch of weight removed.

Thanks again for building these.

Mike
Mike Van Veghten
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Re: SBC To Stude - V8 Intake Adapter Plates Project

Post by Mike Van Veghten »

Jon -

I put a note up on the Conestoga site for you.
Don't know if it'll do much, but...

Mike
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3x2stude
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Re: SBC To Stude - V8 Intake Adapter Plates Project

Post by 3x2stude »

Mike,

Thanks for the information and posting my info on another sight. I have six sets of the second run left. I made some progress on the SBC / Cadillac version. I believe I solved the problem of the one bolt interference. A stainless thread insert still has just enough meat to work. I king of stalled on this with the Potvin caper and then COID. I still need to go to a nearby yard and scarf a motor to test fit. Hopefully it'll continue with it in the spring. Photos attached.

JK
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3x2stude
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Re: SBC To Stude - V8 Intake Adapter Plates Project

Post by 3x2stude »

Of the 21 sets I had made, the single prototype and two runs of ten, I plan to keep the prototype and one set from the last run. I have six sets for sale. That means there are thirteen sets out there. Dan got them on a car and posted some numbers but with him gone now I have lost track of the car he put them on and have not heard anything on the speed car he bought a second set for. I will admit that I have not got any run time on them and my excuse is I am a creature of habit. I get an Idea, build the part, make sure it fits, make sure it works, (Dan did that), and then move on to another crazy project.

Has anyone else gotten a set installed and running? Even some feedback on progress would be nice to see. Now I also have an ulterior motive. I would love to get the other six sets sold to finance a computer module for the "Potvin" project, approximately $1900.00. The computer is the last big ticket item left to acquire for the project. There would be enough left to start putting a motor together to put it on too.

Jon
Mike Van Veghten
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Re: SBC To Stude - V8 Intake Adapter Plates Project

Post by Mike Van Veghten »

Hmmm, I'd love to have a set (or two) of adapters made of Delrin, or other high temperature plastic..!
Weight takes h.p. to move it...

Mike
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