[60man]

Originally Posted by 65nss4spdGTO

When I compared our numbers to what was provided, ours were a bit lower (2%).

Troy,

Hope all is well, glad to know the year turned out well for you, see you at Norwak and lets hope we can line up our barges and have some fun!

Calvin

Thanks Calvin....my old body endured a lot last year but I am told I am on the mend now..Been working on car some to help the spirits.. I would love to line up with your Dad's 59 . Hopefully I won't get spanked too bad !! No matter...it's fun.
CYA @ Norwalk ....

[BruceWilkie]

Originally Posted by Milepost

Will these heads require more offset on the intake rockers since you widened the port?

I'm sure Calvin will correct me if I'm wrong... I got a chance to see these the other night, it didnt look like it would require geometry changes.

I agree with your "classic inline" evaluation. Edelbrock including the Pro Port may end up better suited for "classic inline" applications that arent biggest bore maximum rpm combos. I see best advantage of the Pro Port is custom tailoring to an application. Time will tell though. Its not inconceivable that someone meets or beats the Tiger with a Pro port... just seems less likely. Keep in mind a few years ago it seemed quite a stretch to think a std Edelbrock could hit 350 let alone to where it is now.

There are some very talented people amongst us always looking to raise the bar. Put politics and loyalties to the side and reflect on just how far we've come from a strictly technical viewpoint.... truly amazing.

And... thanks for making a very overlooked distinction... "classic inline" vs the other options we have available.

[p4msi1]

Milepost, Here are the pictures of the Super 400 hood, the sheet metal
metal intake manifold and the water crossover. I built the manifold out of .100 aluminum and 1/2" plate stock for the flanges and made the crossover to kinda match the sheetmetal manifold. I have not tested the manifold yet so I don't know how well it will work but it does all fit under the hood. I have alot of money in the hood so I was not going to cut it up.

Steve

[Milepost]

Originally Posted by p4msi1

Milepost, Here are the pictures of the Super 400 hood, the sheet metal
metal intake manifold and the water crossover. I built the manifold out of .100 aluminum and 1/2" plate stock for the flanges and made the crossover to kinda match the sheetmetal manifold. I have not tested the manifold yet so I don't know how well it will work but it does all fit under the hood. I have alot of money in the hood so I was not going to cut it up.

Steve

Nice work Steve! You definitely have some fab skills. BTW That super 400 hood looks awesome. I wouldn't want to cut it up either! Too bad there isn't something similar for 68-70 GTO's!

[twinturrbo406]

Originally Posted by 60man

Very nice work Calvin..
IIR the CFM on my Tigers I got from AllPontiac/Cerelli with same valve size/location flowed like 412 @ .750..so +33 is right there..Glad to hear velocity mentioned...
If I ever go to a 535 CI I might be in the market..

Would love to visit your new shop sometime..
See ya at Norwalk

... yes, the velocity was a very important part of what we were looking for with the new shape, the port has a very nice speed and even port map now, you can really hear the difference, we cant wait to get this top end on something ...

[Milepost]

Originally Posted by twinturrbo406

... yes, the velocity was a very important part of what we were looking for with the new shape, the port has a very nice speed and even port map now, you can really hear the difference, we cant wait to get this top end on something ...

Bill: I also noticed you picked up the exhaust flow quite a bit too. Have you considered something similar to the raised and shortened exhaust port that is offered as an option by All Pontiac to squeeze a little more flow out of the exhaust side? As an added bonus, I understand, it makes porting the exhaust that much easier to accomplish & decreases mill time on the CNC machine?

[twinturrbo406]

Originally Posted by Milepost

Bill: I also noticed you picked up the exhaust flow quite a bit too. Have you considered something similar to the raised and shortened exhaust port that is offered as an option by All Pontiac to squeeze a little more flow out of the exhaust side? As an added bonus, I understand, it makes porting the exhaust that much easier to accomplish & decreases mill time on the CNC machine?

... as of right now, we dont have a set of those heads in the shop, but i'm sure as soon as a set shows up Calvin would love to see what could be had from that type of exhaust port, myself included ... Calvin's original plan of my work on the Tiger heads was to see how much improvement we could get for the most economical price ...

[65nss4spdGTO]

Originally Posted by twinturrbo406

... as of right now, we dont have a set of those heads in the shop, but i'm sure as soon as a set shows up Calvin would love to see what could be had from that type of exhaust port, myself included ... Calvin's original plan of my work on the Tiger heads was to see how much improvement we could get for the most economical price ...

We know there is more gain in changing the valve location as we spent some time in development. The goal here was to increase the port speeds at mid lift and design an upgrade that can be used by other racers without "reinventing the wheel". Our goal for this engine is a 75HP to 100HP upgrade while maintaining the same cubic inch.

Calvin Hill
Hill Performance / Mondello Tech Center
708-250-7420

[dci]

My Tiger head design still has allot left un discovered, and guy's like Calvin are just starting to bring it out. This head was designed with allot of room for diversity and I'm glad to see that some are tapping it. I have a prototype from way back in 2003 that I used for R&D that has several different port configurations. Some of you might remember seeing it at Norwalk or in the article HPP wrote when I first started showing it to the public. One port is the as cast that was tested for the article that flowed 422. Another port is a max effort port that flows 480 cfm with a 2.350 valve. Another is a port very similar to what Calvin has done (not as wide) that flows 440 with a 2.250 intake valve.

Nice work Calvin, glad to see you playing with some Tiger's.

Happy Holiday's to everyone!!!!

Don Johnston
DCI MOTORSPORTS INC.
330-628-3354 cell
330-850-5050 shop
Designer of the DCI Tiger heads and the NEW DCI Ram Air V Heads!!!!!!

[LiL Jack]

Has anyone outdone a set of Tigers done by BES yet?

[slowbird]

Originally Posted by LiL Jack

Has anyone outdone a set of Tigers done by BES yet?

Nope.

[65nss4spdGTO]

Originally Posted by LiL Jack

Has anyone outdone a set of Tigers done by BES yet?

What does that have to do with this post?

Calvin Hill
Hill Performance / Mondello Tech Center
708-250-7420

[twinturrbo406]

Originally Posted by LiL Jack

Has anyone outdone a set of Tigers done by BES yet?

... wow, that's a big pair of shoes to fill ... hummm ... i wonder what $1500.00 will do for porting vs $20,000 ?? yeah, that's fair ...

[LiL Jack]

Originally Posted by 65nss4spdGTO

What does that have to do with this post?

Calvin Hill
Hill Performance / Mondello Tech Center
708-250-7420

dunno

[LiL Jack]

Originally Posted by twinturrbo406

... wow, that's a big pair of shoes to fill ... hummm ... i wonder what $1500.00 will do for porting vs $20,000 ?? yeah, that's fair ...

Its not 20k.

"that guy" in Floriduh can get well above 450 CFM pretty easily and cost effectively.

But then again I never raced a flow bench.

[twinturrbo406]

Originally Posted by LiL Jack

Its not 20k.

"that guy" in Floriduh can get well above 450 CFM pretty easily and cost effectively.

But then again I never raced a flow bench.

... hold on Jack, did BES move to Floriduh ?? ... make up your mind ...

[65nss4spdGTO]

Originally Posted by LiL Jack

Its not 20k.

"that guy" in Floriduh can get well above 450 CFM pretty easily and cost effectively.

But then again I never raced a flow bench.

I thought the heads you just bought from Langer cost over $20k to duplicate????

Calvin Hill
Hill Performance / Mondello Tech Center
708-250-7420

[Daniel Barton]

Originally Posted by 65nss4spdGTO

I thought the heads you just bought from Langer cost over $20k to duplicate????

Calvin Hill
Hill Performance / Mondello Tech Center
708-250-7420

Now you have claimed that Kinsler and Lil Jack have both purchased Langers Tiger heads... interesting theory.

[LiL Jack]

Originally Posted by 65nss4spdGTO

I thought the heads you just bought from Langer cost over $20k to duplicate????

Calvin Hill
Hill Performance / Mondello Tech Center
708-250-7420

I know the person who bought them and it is neither I or Mr. Kinsler.

[LiL Jack]

Originally Posted by twinturrbo406

... hold on Jack, did BES move to Floriduh ?? ... make up your mind ...

Nah, either one could do a great set of heads proven by there track record.