I have a l31 vortec with a holley tbi with gm injector pod on a edelbrock rpm air gap intake the motor is all stock other then bolt ons and runs mid 13's now I want a little more and a better fuel system so I built a all forged l31 with a mild comp cams cam http://www.jegs.com/i/Comp-Cams/249/...81#moreDetails
I was thinking of using this intake http://www.racingheadservice.com/rhs...ons-10130.html
and my tbi base with a block off plate and buying the ebl flash and port mod do you see and problems that I maybe over looking in this set up working well?

 

Expensive but I dig the fuel rails.

-- Joe

 

Yeah it is a little expensive I think another intake with fuel rails I could save maybe $70 unless there is someway to use stock fuel rails on an aftermarket intake but not sure on that.

 

http://www.ebay.com/itm/PROFESSIONAL-PRODUCTS-Hurricane-Plus-INTAKE-MANIFOLD-SBC-Chevrolet-VORTEC-/281112300704?pt=Race_Car_Parts&hash=item4173994ca0&vxp=mtr
That plus $100 fuel rails. Under $300

I'm running the SBC version of that gasket matched to my AFR-210 heads.
I'm running a megasquirt though rather than an EBL.

-- Joe

 

Do you have a picture of yours? and I would still have to have it drilled and bungs installed and a mount plate or bracket installed. If I went that rout I could probably use the polished rpm air gap I'm using now and save more $

 

I linked the wrong one. The EFI version is like $180.

I have an elbow and a 95mm throttle body, but you get the idea:

https://www.thirdgen.org/forums/atta...r_finished.jpg

-- Joe

 

Nice looks good and polished and I seen there efi intakes but not for vortec heads lol

 

Hope I can find a polished one also.

 

I dont understand how that thing can fit standard and vortec ports properly. Im very skeptical.

 

Two different castings, no?

-- Joe

 

I've ran that cam on a L98 tuned port, it had great throttle response and really good mid-range, not a whole lot on top, but much better than say an LT1 cam. Not as much overall as the hotcam. but better mid range. Also that cam calls for a specific double spring. make sure to use whatever comp recommends or you WILL have problems, it has more aggressive lobes than oem.

 

I dont see anything indicating it's two separate castings. Their "Vortec" heads are "dual pattern" also so you can use standard intakes on their "Vortec" heads...

I know they're a reputable company and everything, but that whole thing just makes me really skeptical of what they're trying to accomplish. Are they Vortec ports or not on their Vortec heads? And why do they claim both intake types fit with no compromises? And does that have anything to do with their claim that their intake fits both types?



???

Sounds to me like it has dual bolt patterns, but the ports are standard.

 

Yeah I wanted low end torque its a street car so I just want a little more then I have now. Did you ever run your car or dyno it with that cam and can you tell me about your setup?

 

No there vortec intake only has vortec bolt holes no others you can see in the pictures.

 

Straight from the RHS website:

 

O ok sorry I thought you were talking about the other intake yeah I don't know how that is I would think if it was made to fit the biggest ports the miss match when running the older heads would be horrible I don't think I'm going with this intake anymore but would like to see one in hand.

 

No, i was a iron head L98 with a home port job, xr264HR cam(with correct valve train,springs, etc..) ARAP bin, slp headers, Air foil. MSD coil, flowmaster 40.

The car ran really well, was insanely fast in the mid-range, but had an oiling problem that was the fault of the builder and never ran to it's potential. When the oil pressure didn't bleed off it was a beast, it would get hot and run like crap because it wasn't oiling the bearings properly or keeping oil pressure.

my vortec/hotcam motor makes more- how much, don't know, but noticeably more. but it doesn't have the same assebly care the XR264 motor had (ported heads, matched valvetrain and degreed cam - it def made a difference) but is 03/04 M3 type of fast.

Just and FYI, I have a pro-built street/strip tranny. I stock transmission will not live for long even with a XR264,headers, & a tune.

Just a guess, the L98 was putting out about 300 flywheel HP, & the vortec/ hotcam is probably over 350 flywheel. An uncorked LS1 will still kill it on top-end, but not in the mid range.

 

I'm talking about the intake manifolds, not the heads, sorry for the confusion.


Honestly, I didn't give this much thought. I don't quite understand why people use vortec heads, so I just figured it's what he had and that wasn't negotiable. I've had a set of vortec heads in the garage for 10 years nobody wants. Only use AFR castings here...

Is he using RHS heads or stock L31 heads?


-- Joe

 

I'm using l31 heads its what I have and will work for what I want although I am trying to get some AFR 180's from a friend he was just making the comments about the things RHS claim on there site about the intake I posted.

 

180s or 195s for a street car, decent cam, and a singleplane intake could make 450hp.

I'm running AFR210s but I'm over 412 cubic inches.

-- Joe