......... Just wanted to see if and how many of y'all might be interested in a unique intake manifold choice ... the whole premise is based on a single plane intake manifold ... that said ... you must already know that with an SP intake , you WILL lose some bottom end and gain top end performance ... just how much depends entirely on your set-up ... primarily cam , converter , and gearing ... the rotating assembly must also be capable of supporting higher RPM levels ... There are two basic choices in base manifolds ... Edelbrock's Torker II (modified for EFI) for smaller displacement engines or lower peak power levels ... and Accel's Pro-ram for the all-out guys ... the key part is the plenum chamber ... I have modified a stock TPI plenum to bolt on to a square bore 4bbl intake manifold ... the real beauty of it is that you can hook up ALL your current linkages , vac lines , air filter/intake , and use your existing Throttle body while keeping everything under the hood ... my mule is a C4 Corvette and is an on-going R&D tool ... In a low production environment I'm looking at pricing the modified TPI plenum ported for dual 58mm or Mono-blade TB at $375.00 ... EFI modded Torker II with fuel rails at $500.00 ... and a workable thermostat housing (a very key part ) at $75.00 ... as an added bonus I'll return $50 upon receipt of your useable plenum and/or Torker II core ... This thread is meant to establish whether or not I can justify production ... I don't have dozens of them on the shelf ... so , for now at least , I'd just like to know if ANYONE is interested ... please keep that in mind when responding to this thread ........ Thanks , Bob ..........

 

That' an interesting piece of work.But I think the Holley Stealth ram would work better.

 

Very intriguing. It may "only" be as good as an HSR but might interest us Firebird guys as it looks quite a bit shorter. Any measurements compared to stock? Also, any before and after number from your 'vette? Any plans on doing a dual plane? Less drop in bottom end but still an improvement up top, no?

 

Very interesting. Also interested on the "dual plane" intakes- to retain a ill low end grunt....
Very nice- sweet idea!

 

looks good


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I dont hae TPI but that is pretty cool/interesting. it'd be nice to see dyno #'s comparing your setup to the normal TPI intake upgrades.

 

Very interesting:
- so if I'm reading correctly just the plenum would be $375?
- what does the thermostat housing look like?
- how tall does it end up being?
- why do you list the torquer and the accel but not the victor jr (which you show a picture of)?
- any power numbers/comparisons?

 

........... #1 ... Yes , $375 includes the plenum , billet adapter , all the welding , opening and radiusing the bottom of the plenum and porting the TB opening for Mono-blade/58mm Throttle body ... there is a $50 core charge included which is refunded after receipt of your plenum
............ #2


............ #3 ... I will post dimensions as soon as I locate my notes ... I'm moving and they are in a box somewhere ... It fits under the hood of a C4 Corvette ... in comparison ... an HSR needs to be shortened by at least 3/4" to do the same ...
............. #4 ... I tried the Edelbrock Victor E , but the thermostat pad is too tall to fit both a t-stat housing and a throttle body under the hood ... I'm not sure why Eddy decided on a high-rise thermostat , but they did , and it won't fit ......
............. #5 ... None yet , this is part of an evolutionary process and too many changes have been made to dyno each ... I will say that the big single plane forces the power band up in the RPM range and sacrifices the low end grunt , especially on small cubic motors ... this set-up is not for the timid , hence the title of the post .......
............. #6 ... Regarding a dual plane ... the difference in height of the ports at the cylinder head flange would make for some real difficulty in positioning the fuel injector bungs in a way that would not adversely affect the angle of the injector and the cylinder to cylinder performance ... that is why I went with the Torker II ... to see if the smaller passages would improve the bottom end ... an original Torker , Streetmaster , or Weiand Stealth would probably work , but my R&D funds are limited .....
............. #7 ... The "mule" sits awaiting a transmission rebuild ( smoked the 3-4 clutch pack ) and I can't even tear into it until I get everything moved to the new place and get settled in ..... With the FIRST Fuel Injection intake that was previously on the motor , I was shifting at 5000 rpm ... when I installed the Accel , I had to move the shift points up to 6300 to see any gains in ET ... I lost about a tenth in 60 foot times , but wound up gaining about 3/10ths in ET ..... when the new trans goes in it'll include a 4000 stall converter , which I hope will dramatically improve my 60's .......

 

......... The Stealth Ram is an Awesome intake manifold ... it won't fit under the stock hood of a C4 Corvette without major mods ... it has to be shortened at least 3/4" and angled downward toward the front of the car ... The Stealth also uses an LSx throttle body $$$ which puts the linkage on the passenger side , not sure if the OEM stuff will stretch that far , you also need to buy a small cap HEI dizzy unless your F-body is so equipped ... vettes are not ..... Also , with my set-up the addition of NOS is as easy as if it was carbed ... with the same kind of even distribution to all cylinders ......

 

........ I looked at a Performer RPM and realized that the staggered height of the intake port runners at the cylinder head flange would make it near impossible to keep a decent angle on the fuel injectors relative to the head's ports and the injector bungs would require a pencil thin spray pattern to make the trip from the injector tip through a long bung on the lower plane ... the longer bungs might also create a dynamic condition that was deemed unnecessarily risky since the engine might have performance variances in half of its cylinders ... the alternatives toward equalizing the bung heights made fuel rail selection far more complicated which sometimes translates to far more expensive ... not one of the goals .....
.......... By using the stock plenum , you retain ALL the stock hook-ups ( throttle & TV linkage , cruise too ... vac lines , Throttle body , air intake , MAT sensor , PCV etc. ........

 

Didn't want to go the elbow route like I did on my C4 back in the day?

http://members.cisdi.com/~anesthes/s...complete/2.JPG

-- Joe

 

......... Naaah ... Trying to keep it simple ... but I have entertained the forced induction idea many times ..............

 

This is keeping it simple compared to an elbow?

 

Been following your thread over on corvette forum
Pretty sweet and simple assuming you do the work yourself or pay some one
Sweet setup tho I was considering doing this awhile back after seeing your thread

Great deal free bump lol

Nice setup

I think most elbows don't have the vacuum lines

And elbows I've found are usually for ls style throttle body's and are couple hundred $$$
There's are prob cheaper ones out there but didn't but effort to look into .. not to mention you then have to fab vacuum lines $$$$ there are also prob elbows out there with vacuum lines also but idk haven't really look into

so its easier to use stock plenum ...cut hole .. Weld adapter then bolt on and beagle to reuse throttle body no need to buy new single blade

 

.

 

The elbow's are like $200-225.

I had to mill down the Holley intake so the elbow would fit under the stock hood. Paid the guy $100 to use his bridgeport.


So the price he's asking is reasonable for what you are getting, which is an adapter that fits under a stock C4 hood.


-- Joe

 

Tushay !!

 

Actually just mentioned doing something similar on another thread. Seems like a 4barrel tb would be easier, or if you wanted to go cheap a fabricated upper on a Holley square bore baseplate. I like the idea though.

 

......... Did you look at the pic of his elbow set-up ? ...................

 

I did.

Not knocking your work. Its awsome. Something many people couldn't do.

For most, it would be easier to bolt on an elbow and mod some cables and wires to make it work.

Not many could weld aluminum.

But, offering this may very well open the option to many esp the vette crowd.

Good work, and good luck!

 

this is interesting to me since im building a 383 for my bird (so losing a little on bottom end wont hurt) and hsr isnt an option without giving up the stb which also is not an option to me and op course norm tpi wont breath enough for a 383