porting my Super Ram pics
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porting my Super Ram pics
Doing a little port work on the SR. I need it to flow well enough to keep up with my 355 195afrs with a 224-230 .53*lift 112 cam. Do you guys think i should open it up more and take more of the runner walls out or what? Also need to do work on the base but have not got there yet. Whats the max CFM a ported accel base will flow without welding on it?
Le Mans Master
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From: Dublin CA
Your good. You do know that when you cut down the runners (Siamese) that you will loose some of your bottom end. This process works well with the stand TPI runners which are much longer.
I would quit at this point. This should flow nicely.
I would quit at this point. This should flow nicely.
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I finished the other side tonight!
On a bone stock motor you MIGHT loose a lil bit of low end but with a head/cam motor you will gain TQ and HP for the most part. I need to open it up to breath and flow and keep up with the mods i have. With this motor being in a truck with a light rear end i dont mind loosing some low end to gain mid-high end. I will be sticking this SR up for sale soon i think. I have another one ill be goin hog wild on i think. I would like it to make and hold power into low 6k range
On a bone stock motor you MIGHT loose a lil bit of low end but with a head/cam motor you will gain TQ and HP for the most part. I need to open it up to breath and flow and keep up with the mods i have. With this motor being in a truck with a light rear end i dont mind loosing some low end to gain mid-high end. I will be sticking this SR up for sale soon i think. I have another one ill be goin hog wild on i think. I would like it to make and hold power into low 6k range
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From: Overland Park Kansas
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I like what you've done. You might get a little more out of top-end if you port more, but then I'd wonder why you didn't go for a shorter-runnered intake. There is some benefit in maintaining some port velocity for low-speed driveability.
I think you're good as-is. And, by that, I mean good!
I think you're good as-is. And, by that, I mean good!
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check his out....this is a hogged out SR!!
http://www.thirdgen.org/techboard/so...mare-home.html
http://www.thirdgen.org/techboard/al...super-ram.html
http://www.thirdgen.org/techboard/al...fications.html
http://www.thirdgen.org/techboard/so...mare-home.html
http://www.thirdgen.org/techboard/al...super-ram.html
http://www.thirdgen.org/techboard/al...fications.html
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IMO I think you are about as far as you want to go.
Unless you are putting it on a 400+ci motor, or have major power and want to spin tires less and spin the motor up more, these guys are right. If you go too far you start to defeat the purpose of the SR.
Sure you can hog it out like crazy, but it changes the physics of the piece and how it functions with your motor and gears.
You did great work, but yes, stop now or get something else to put on IMO.
Unless you are putting it on a 400+ci motor, or have major power and want to spin tires less and spin the motor up more, these guys are right. If you go too far you start to defeat the purpose of the SR.
Sure you can hog it out like crazy, but it changes the physics of the piece and how it functions with your motor and gears.
You did great work, but yes, stop now or get something else to put on IMO.
Le Mans Master
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I don't really see how a good judgement can be made on the work by the size of the pictures. Based on what I'm seeing I can't really assess what you've done. Did you do a line of sight approach, merely hog out the runners, or specifically target turbulent areas? Are you cc'ing each runner?
As with any orfice that experiences dynamics, bigger doesn't mean better. Yes, you guarantee more cfm, but you can equally sacrifice velocity. Runner taper is going to be very important, but most of your flow gains are going to be at the runner entry. It definitely appears that they could be improved, but like i said, for me to make any suggestions I'd need to really be able to see the pictures.
As with any orfice that experiences dynamics, bigger doesn't mean better. Yes, you guarantee more cfm, but you can equally sacrifice velocity. Runner taper is going to be very important, but most of your flow gains are going to be at the runner entry. It definitely appears that they could be improved, but like i said, for me to make any suggestions I'd need to really be able to see the pictures.
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I don't really see how a good judgement can be made on the work by the size of the pictures. Based on what I'm seeing I can't really assess what you've done. Did you do a line of sight approach, merely hog out the runners, or specifically target turbulent areas? Are you cc'ing each runner?
As with any orfice that experiences dynamics, bigger doesn't mean better. Yes, you guarantee more cfm, but you can equally sacrifice velocity. Runner taper is going to be very important, but most of your flow gains are going to be at the runner entry. It definitely appears that they could be improved, but like i said, for me to make any suggestions I'd need to really be able to see the pictures.
As with any orfice that experiences dynamics, bigger doesn't mean better. Yes, you guarantee more cfm, but you can equally sacrifice velocity. Runner taper is going to be very important, but most of your flow gains are going to be at the runner entry. It definitely appears that they could be improved, but like i said, for me to make any suggestions I'd need to really be able to see the pictures.
Le Mans Master
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Why's it gotta be so complicated...lol. The resolution is tiny, zooming makes pixellated junk. I see "siamese", but I see a bunch of angles everywhere and a knife edged entry divider...so my initial impression is.....just something I can't comment on until I see better pics.
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From: Overland Park Kansas
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CFI-EFI used to bang the "match your parts" drum quite often. Since the SR is a ~5500rpm intake -- and well matched to the 350ci motor, I wonder about the choice of:
1) bigger than SR cam
2) bigger than 180cc AFR head (using that cam)
3) trying to port it to improve >5500rpm performance
Don't get me wrong....I LOVE the porting shown and would have done something similar. It's the choice of intakes for the apparent goals that makes we wonder.
I'd say the same thing to guys who buy SLP runners, chop them open, remove all the dividers, and weld them back up. If you want super top-end power (or a BBC motor), then why not equip it accordingly.
IOW: These are my reasons for saying you've gone far enough.
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All i had with me was my phone when i took these...ill have to take some better pics. I used a few 40 grit flapper wheels and a 12" extention to smooth out the runners and open them up some. I did not CNC them by any means. The divider walls are not very thick, by the time i took a die grinder to them and then used the flapper wheel to smoth them out they did turn out kinda "knife edged"....is this not a good idea? I can make them more rounded if thats better.
Some of my reasons for not goin mini or stealth ram is Im runnin a 2600 stall and dont want to run a bigger one at all. Also need to pass emmissions.....also have always liked the cool looking factor of the SR!
Some of my reasons for not goin mini or stealth ram is Im runnin a 2600 stall and dont want to run a bigger one at all. Also need to pass emmissions.....also have always liked the cool looking factor of the SR!
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http://forums.corvetteforum.com/c4-t...se-and-sr.html
"Well the car feels faster on the low, mid, and top end. I definitely don't feel it lost any low end power." This is why i chose to port it the way i did! Right now im runnin a Fully ported SLP/plenum setup with a edelbrock base on a motor with stock cast heads and a 212-218 cam, LT headers and full 3" exhaust. When i changed to the SLPs vs stock TPI the low end gain was BIG with the 2200 stall i was runnin at the time. Right now the way it is with the yenk 2600 on the street 1st gear is usless with traction aswell as most of 2nt with 315/35/17s on my truck. I dont mind loosing some of the low end....just dont want to loose it all like a min ram would. I would think the low end gets the truck moving quicker vs a mini ramed motor with a 2600stall.
"Well the car feels faster on the low, mid, and top end. I definitely don't feel it lost any low end power." This is why i chose to port it the way i did! Right now im runnin a Fully ported SLP/plenum setup with a edelbrock base on a motor with stock cast heads and a 212-218 cam, LT headers and full 3" exhaust. When i changed to the SLPs vs stock TPI the low end gain was BIG with the 2200 stall i was runnin at the time. Right now the way it is with the yenk 2600 on the street 1st gear is usless with traction aswell as most of 2nt with 315/35/17s on my truck. I dont mind loosing some of the low end....just dont want to loose it all like a min ram would. I would think the low end gets the truck moving quicker vs a mini ramed motor with a 2600stall.
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Air likes a rounded corner much better but I wouldnt worry about it just run it the way it is.
Time slip will tell all.
Well the car feels faster on the low, mid, and top end. I definitely don't feel it lost any low end power."
Last edited by cv67; Mar 8, 2010 at 10:46 PM.
Le Mans Master
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My SR flowed 280 after some porting & gasket matching 
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Thanks 355pipickup for showing them my car. Hopefully I can get the car to the dyno this weekend. This was also done on a 406 that made 403wrhp@5600 and 439rwtq@5000. Before the major port work it was 385rwhp@5500 and 434rwtq@4700.
Now I have a 5 speed in my car an it will burn the tires in all of first and all of second and a little of third. It pulls easily to 6400 but don't know if it is actually making good power that high. I live in California so I have to be able to pass smog here.
Now I have a 5 speed in my car an it will burn the tires in all of first and all of second and a little of third. It pulls easily to 6400 but don't know if it is actually making good power that high. I live in California so I have to be able to pass smog here.