Custom Upper Intake
- Thread starter MikeRenz
- Start date
myclone
Donating Member
Re: Custom Upper Intake
Maybe something like this Team G tunnel ram with the top unbolted and a custom upper plenum for the TB fabbed up. Of course it'd have to be cut down and rewelded for the V6 but I assume anyone had guessed that part.
None the less a custom intake is on my "some day" list of crap to do.... :roll:
Maybe something like this Team G tunnel ram with the top unbolted and a custom upper plenum for the TB fabbed up. Of course it'd have to be cut down and rewelded for the V6 but I assume anyone had guessed that part.
None the less a custom intake is on my "some day" list of crap to do.... :roll:
vortecfiero
New member
Re: Custom Upper Intake
It depends on what you are after, in my mind..
performance (dont use the stock lower)
trying to solve a fit problem
appearance
all of the above
Ive considered this for a while and for my setup im planning
on makeing an upper flange welded to some alum box tubing
and welded to a modded V8 plenum.
Another thought would be to mod a CPI tuned intake
those things make brutal midrange power.
Im still looking for a TPI upper plenum BTW
It depends on what you are after, in my mind..
performance (dont use the stock lower)
trying to solve a fit problem
appearance
all of the above
Ive considered this for a while and for my setup im planning
on makeing an upper flange welded to some alum box tubing
and welded to a modded V8 plenum.
Another thought would be to mod a CPI tuned intake
those things make brutal midrange power.
Im still looking for a TPI upper plenum BTW
warmpancakes
New member
Re: Custom Upper Intake
Its an accel piece that has a few stripped holes
MikeRenz said:
Its an accel piece that has a few stripped holes
jjorgensen52
NHSTE - I'm the only one!
Re: Custom Upper Intake
I'm busy modding my CPI intake :tup:
vortecfiero said:It depends on what you are after, in my mind..
performance (dont use the stock lower)
trying to solve a fit problem
appearance
all of the above
Ive considered this for a while and for my setup im planning
on makeing an upper flange welded to some alum box tubing
and welded to a modded V8 plenum.
Another thought would be to mod a CPI tuned intake
those things make brutal midrange power.
Im still looking for a TPI upper plenum BTW
I'm busy modding my CPI intake :tup:
4C FED
Absolutum Dominium
Re: Custom Upper Intake
Save yourself the work, buy this:
http://cgi.ebay.com/ebaymotors/chevy-v6-4-3-typhoon-cyclone-v-6-tunnel-ram-rare-turbo_W0QQcmdZViewItemQQcategoryZ36474QQihZ004QQitemZ140049418307
Save yourself the work, buy this:
http://cgi.ebay.com/ebaymotors/chevy-v6-4-3-typhoon-cyclone-v-6-tunnel-ram-rare-turbo_W0QQcmdZViewItemQQcategoryZ36474QQihZ004QQitemZ140049418307
SY2455
70's Veteran
Re: Custom Upper Intake
How about a new idea like this one.
Make a new lower that bolts to the votec heads and the stock upper. So you no longer have to weld extra stuff to the stock lower. Than a new upper stock upper that the inlet is on the front for use with a ATA intercooler.
How about a new idea like this one.
Make a new lower that bolts to the votec heads and the stock upper. So you no longer have to weld extra stuff to the stock lower. Than a new upper stock upper that the inlet is on the front for use with a ATA intercooler.
Re: Custom Upper Intake
Option 3 isnt the best because there is no plenum displacement and the edelbrock intake wont have consistent shape and length of the runners. Fuel injected cars have tuned equal length runners of consistent shape and form now that the carb isnt holding them back for a reason. Carb style intakes will not offer the volumetric efficiency of a tuned EFI intake. To have consistent runners between all 6 cylinders promotes equal cylinder volumetric efficiency and therefore equal tuning and a more efficient and powerful engine. The displacement of the plenum and shape and consistancy of the runners is something you have total control over with EFI, so I personally would take advantage of that.
Thats where your option 2 comes in, much more modern style and it would do you more justice if your runner length was optimumized for your RPM range. You can research helmholtz tuning to get an idea of about how you long you should try and get your runners to be. If possible a degree or two of taper can help promote more velocity in the ports.
Option 1 leaves you halfway inbetween. The SyTy lower manifold APPEARS to have equal shape/length up to where it ends. So your fabricated part would roll with that. But it appears it may reduce your runner length and also eliminate any type of velocity stack that factory upper may have... do you have a picture of the inside of the stock SyTy upper? Measure your runner length from runner inlet to the back of the intake valve and compare to research into helmholtz tuning.
I am very very new to the SyTy - but I have designed a few successful intake manifolds for other applications. For my truck, I am currently planning a full SyTy manifold with the plenum chopped off the upper and I will fabricate a larger displacement plenum for improved pressure transfer to the cylinders and a throttle flange facing the drivers side for an air-air charge cooler.
I am not trying to come off as some type of intake manifold engineer, just sharing my personal conclusions of research which as worked very well for me so far.
PS if you do any waterjet work on the side, shoot me a PM.
Option 3 isnt the best because there is no plenum displacement and the edelbrock intake wont have consistent shape and length of the runners. Fuel injected cars have tuned equal length runners of consistent shape and form now that the carb isnt holding them back for a reason. Carb style intakes will not offer the volumetric efficiency of a tuned EFI intake. To have consistent runners between all 6 cylinders promotes equal cylinder volumetric efficiency and therefore equal tuning and a more efficient and powerful engine. The displacement of the plenum and shape and consistancy of the runners is something you have total control over with EFI, so I personally would take advantage of that.
Thats where your option 2 comes in, much more modern style and it would do you more justice if your runner length was optimumized for your RPM range. You can research helmholtz tuning to get an idea of about how you long you should try and get your runners to be. If possible a degree or two of taper can help promote more velocity in the ports.
Option 1 leaves you halfway inbetween. The SyTy lower manifold APPEARS to have equal shape/length up to where it ends. So your fabricated part would roll with that. But it appears it may reduce your runner length and also eliminate any type of velocity stack that factory upper may have... do you have a picture of the inside of the stock SyTy upper? Measure your runner length from runner inlet to the back of the intake valve and compare to research into helmholtz tuning.
I am very very new to the SyTy - but I have designed a few successful intake manifolds for other applications. For my truck, I am currently planning a full SyTy manifold with the plenum chopped off the upper and I will fabricate a larger displacement plenum for improved pressure transfer to the cylinders and a throttle flange facing the drivers side for an air-air charge cooler.
I am not trying to come off as some type of intake manifold engineer, just sharing my personal conclusions of research which as worked very well for me so far.
PS if you do any waterjet work on the side, shoot me a PM.