S10Wildside

I ordered a new ramjet 350 intake kit minus electronics. Because I was unsure what I was getting, I wanted to give those searching for this a heads up that it includes everything necessary on the intake minus vacuum fittings (but does include the vacuum fitting for the fuel pressure regulator) and it does not include a fitting for the fuel feed at the back of the passenger side rail. Everything else above the cylinder heads is included in this kit. The intake manifold to heads gaskets are included, but not pictured.

I'm going to build new harnesses for these intakes using the 1227165, 1227730 and 1227727 ECMs. When I'm done using this intake, it will probably be for sale.

This is a Vortec head intake only. It also has no provision for EGR.

Dustin Mustangs

iTrader: (1)

Sweet! Those are great pics. I have been waiting for someone to start experimenting with that GM PN. I really think that the ramjet is the most highly overlooked GM FI intake there is. The power curve that the ramjet crate motor makes is amazing, and to think that they used production truck heads and a cam with only 207 some degrees of duration @0.05...

Like I mentioned to you in an earlier post, keep us posted on how this project turns out, I for one am extremely interested.

S10Wildside

I'll be somewhat surprised if the RamJet intake stays around. I have found less than a handful of RamJet swaps and I doubt GM sells a lot of them. I might be dreaming, but maybe the harnesses I'll start selling will promote some RamJet conversions. I'll be offering about a $400.00 electronics solution (including ECM). That'll knock the electronics price (compared to GM) in half or more (depending on the source). I have all the equipment to make these harness. I plan to start the first harness tonight.

I'm still confused about that distributor being a different part number. I'm going to compare it to a stock TPI distributor and see what's different. I'll bet it's exactly the same.

S10Wildside

I just finished my 1227730 speed density wiring solution for the RamJet. I could easily build a 1227165 (Mass Air) or 1227727 (Corvette ECM) solution. I'll build a few harnesses and offer them for sale, but I don't know how popular this intake setup really is. Probably won't have too many requests.

This harness is basically a TPI stand alone harness with different lengths and several different connectors for the RamJet.

S10Wildside

I have read that the RamJet throttle body is the same as the LS1 or 99-04 throttle body. It is not. The RamJet throttle body does not have provision for coolant to run through it.

Parrydise7

iTrader: (1)

If it was smog-legal here in the People's Republik of California, I would be interested.

Abubaca

iTrader: (3)

I'm curious as to why you would swap in "just" the intake. I can see wanting a turnkey crate motor, but there are so many intakes to chose from. As for the Vortecs, you have the SDPC, the Miniram, and soon the HSR, which pretty much rounds out just about all the choices you could want.

I'm very impressed with your work, and you certainly have more talent than me, but I'm just wondering what the benefits would be.

Ray87Z

Hmm, I didn't realize the $1200 kit came with the injectors, TB, and distributor. Not a bad price at all in light of that...

I just blew all my cash for awhile on a new tranny, but if there was a harness/ECM solution for an extra $400 on top of that it becomes a pretty sweet kit to swap onto my carbed Vortec headed 350...

Any idea what lb/hr the injectors are btw, gm parts direct doesn't have any specifics on that part number injector...

S10Wildside

Honestly, I'm currently only making TPI harnesses and wanted to make the most of the 1227730 system before making the large investment into the LT1/LS1 harnesses. There will be a few who will want this harness, but probably not many. I'm okay with that. This also gave me a good excuse to play with the RamJet and to give me something different to do.

S10Wildside

The best price I could find with shipping and/or tax was $1400.00.

As far as the injectors go, they look exactly like the LT1 injectors. GM probably just kept what they had and went with the 24lb/hr LT1 injectors.

Dustin Mustangs

iTrader: (1)

I really don't understand why no one is as impressed with the ramjet as I am. The ramjet crate motor is a very conservative setup that makes 1 hp per cubic inch and brings home 367 ft. lbs. of torque at a mere 1600 rpm. Whats not to like there? Not only that, but look at the how similar it is to our tpi engines. The cam specs are nearly identical (minus the ramjets lobe seperation). So other than the cam, the engine management system, and the intake, this engine is pretty much a L98 with a vortec conversion. I for one would much sooner convert to a ramjet upper end than go with the vortec tpi conversion. With that being said, look at this dyno comparison. Both dynos were done by the same magazine, I forget which one. The ramjet is the stock crate engine and the TPI has had just the vortec conversion and 1 7/8" headers (same size that the ramjet was tested with), nothing else on either engine. I think the graph speaks for itself...and you thought TPI was a torque monster! I would love to see a dyno that is as impressive at both ends of the graph as this one from any of the intakes listed above (HSR, SR, MR, ect...). I'm not trying to flame Abubaca by any means, I just don't understand why I'm alone on this??

MrDude_1

because it flows great and its cheap.

SD base= still a LTR TPI setup. if you want to go fast, it'll slow you down. i dont know about you, but i find it annoying when i spend alot on a FI setup, spend time tweeking it perfect, only to have it go slower then when it was carbed.

miniram. overpriced, underdesigned.

HSR for vortec? as far as i know, its not out yet.. kinda makes it hard to buy

Ray87Z

GMpartsdirect.com has it listed at $1235, what was the shipping charge, can't be that much can it?

MrDude_1

S10Wildside

Those HP and TQ numbers are very impressive! Makes me want to get a set of vortec heads and the ramjet cam now.

Considering everything you get with the RamJet setup, it's a fair price.

Dustin Mustangs

iTrader: (1)

Their shipping rate is a flat 20% of the purchase price for items that don't need special shipping arrangements. Believe it or not, the prices they advertise on their website are actually what any GM dealer would have to pay for the same part. The only profit they make is the difference between the actual shipping cost and the 20% that they charge. Another possibly suprising fact about gmpartsdirect.com is that they are just a regular old dealership with an interesting marketing strategy. So no, your not getting parts straight from GM, just from a GM dealership. Don't get me wrong though, they still offer some pretty wicked deals even with the shipping added in. I myself have found a dealership in my area that will sell me parts at the same 20% above cost, and I imagine most anyone could line the same up the same for themselves if they called the right place and said the right things.

89 Iroc Z

S10Wildside,
Do you know how much it is for the intake, fuel rails, and TB. Do you have the part numbers? Many of us already have TPI and don't need the harness, distributor, and coil since that is already there with TPI. Also I wonder if you could bolt a LS1 TB to the intake to save money since you can get LS1 TB for pretty cheap used.

vampiroc

I thought that it used an LS1 TB. that looks neat, but its a bit pricey.

S10Wildside

Here's a short list I found on this forum at one time.

intake #12489371 $387
fuel rails #12553918 $292
regulator #17123897 $61
TB 17096144 $209

10128305 Splash Shield 6.73
11514149 Bolt 2.00 (4)
12529094* Vortec Intake Gasket 14.75
12550027* Intake Bolt 2.00 (8)
14082470 Vacuum Fitting 2.00
12551240 TB Gasket 2.90
11516425* TB Bolt 2.06
17082049 IAC Seal 4.18
17113168 IAC Bolt/Screw Kit 8.37
11516061 Fuel Rail Bolts .68 (4)
17123897* Fuel Pressure Regulator 53.72
9439930 FPR Bolt .31
12557247 FPR Hose 2.03
12489599 Fuel Line Connector 9.45
12489600 Fuel Line Connector Seal 4.20
25095452 PCV Valve 3.98
12556930 PCV Hose 3.35
336018 PCV Connector 2.67

It looks like the LS1 throttle body would work, even the 5.3 throttle body from the truck motor. I haven't tried and don't want to break the gasket seal to find out. I do have a LS1 in the garage and the 5.3 truck motor. They look almost identical.

LB87FORMULA

iTrader: (3)

S10Wildside,
I really like the idea of using the ramjet intake. The hp and tq curves are much better than the Vortec TPI. I curious about the following issues:
Will the 9 3/4" high intake fit under a stock hood?
Can EGR be ported behind the throttle body similar to the 2.8L V6? Many of us need to pass emissions.
Can the thirdgen ECM control the ramjet IAC?
I can probably design adapters for the TPS and the IAC if needed.
Still I thinks its a great idea. I wonder why Scoggin Dickey didn't develop a kit. Maybe designing a new intake manifold was easier than doing the electronics and a custom EGR...

S10Wildside

LB87FORMULA, I live less than 1.5 hrs from you. I moved from Erie to Cleveland nearly two years ago, stayed there for a year, then moved back to Erie. I frequently made trips past Painsville on weekends.

Street and Performance makes a 1227730 harness for the RamJet. They sell the harness alone for $545.00. They sell the RamJet intake manifold kit with their harness for $2195.00. A custom chip for "your application" is $198.00.

Adapters could be made for the TPI's MAP, IAC, and TPS. I can get ahold of the correct mating connectors to do this. If you want to check out the RamJet setup I have, you're welcome to drive to my place to see it. I live about 5 min from I-90. I have a low mileage 350 TPI motor in the garage that I'm planning on changing over to vortec heads and the RamJet cam to test this intake out with the 1227730 electronics. I'm sure it'll work, but I want to see it and hear it. All I need now is some more money...

89 Iroc Z

Yes

From what I have read yes. You will just need to solder a new connector on the wiring harness
The TPS on the ramjet TB will work fine. All that needs to be done is to solder a different plug to your wiring harness.

S10Wildside

The harnesses I'm going to offer for sale soon are already using the correct connectors.

Here's a pic of my test harness with the correct connectors.

88305tpiT/A

iTrader: (2)

wildside, you wouldent happen to have the part number for the 502 ramjet manifold would you? If I could get just the hard parts of the 502 it would be nice.

S10Wildside

Sure do...

12464482 - Lower Manifold, 502 Ram Jet


12464484 - Upper Manifold, 502 Ram Jet

12489372 - Upper Manifold Gasket

LB87FORMULA

iTrader: (3)

S10Wildside,
I'll have to check out the engine when you complete it.
I am running the 1227165 ECM on my firebird. I may buy the intake and build a MAF version at the same time. My TBI heads are crap and I have no hp above 3k.
I'll be your first customer for the MAF wiring harness. I run my own engineering firm and I know what its like to do a lot of work with no return.
Did you get a chance to compare the ramjet distributer with the TPI version?

89 Iroc Z
Thanks for the info, but did you actually measure it? GMHTP Mar 2001 put a ramjet engine in a 92 Camaro RS with an stock hood,
but they really never tell the whole story...

S10Wildside

I can't see any difference between a stock 87-92 TPI distributor and the Ram Jet distributor. I even seated the Ram Jet distributor in one of my TPI motors and it sits just as the TPI distributor sits. I could, but haven't, try to use the Ram Jet distributor with my TPI motor running a test stand.

Here's some comparison pics. The Ram Jet distributor has the silver colored gear on the bottom. The only part that looks different is the rotor. And I'll bet it's just a newer GM design for the rotor.

S10Wildside

I figured out what parts I need to order to convert my 40k mile 5.7 TPI motor to the Ram Jet specs:

12558060 Assembled Head
14096405 Head Gasket
12370839 1.6 Roller Rocker Kit
10241740 Push Rod (different than 87 TPI motor part number)
17120735 Lifter (different than 87 TPI motor part number)
14097395 Ram Jet Camshaft

I'm going to shop around this week and possibly order the parts. After I get the motor running, I can have the mass air (1227165) harness built and tested in a day. It'll probably idle, but if not, I can burn a custom prom. Wish I had an engine dyno.

silvernblack

Still developing the BIN. I'm playing around with modified BIN with LT4 tables I got from here on the forum.
Had to add the MAT and O2 sensors. Still don't have VSS

S10Wildside

Do you have a Ram Jet 350 crate motor? If the long block is different than the crate motor, then the tune should be close, but workable.

silvernblack

yep, I have the crate motor. Didn't like how rich it ran with the MEFI-3 controller. Couldn't access the MEFI so I started looking for some other way to control it.
I actually just took the wiring diagrams and made a parallel path to the 730 ECM, added the MAT & O2 sensor, made an adapter for the fuel pump controller(since one completes a ground to run and the other supplies power to run), and started her up. Hardest part was finding a good bin to run it on. Got it running fairly well on a AXCN BIN, but when I tweaked parameters it just didn't react right...I then got a modified BIN(actually I think I got it from the corvetteforum C4 section--a fellow there sent it to me) and things started to react as expected when I made adjustments. I'm using an AUTOPROM and EEPROM chip with an adapter.
The reason I used the parallel path to the ECMs is so I could hook back up to the MEFI if I screwed up the 730.....having never done this before, I thought I'd fail safe.
RamJet runs very well on the MEFI, it just always ran rich, I installed an Air/Fuel ratio meter and it was always pegged "rich". I tried using an adjustable fuel pressure regulator(regular corvette regulator screws right into rail) but it didn't help.

S10Wildside

I'm curious about the reliability of the custom program that Street and Performance offers for $200.00. As mentioned above, they are selling a 1227730 harness solution for the Ram Jet 350. They are offering the 730 system for many other fuel injection setups as well. So, maybe they have figured out a good tune for a stock Ram Jet? I'm still skeptical.

I'd be interested in your .bin to play with, however I don't see this Ram Jet 350 of mine making its way into a vehicle anytime soon. It's actually for sale in the classifieds, but I don't expect anyone to jump on it. Meanwhile, I'm still shopping for heads and the Ram Jet cam. If it sells, I'll just get another one. That'll keep my local GM parts dept happy.

Even with your bin (or maybe even the stock bin), the motor will probably run well on a test stand.

silvernblack

Don't know of a stock bin. Can't access the MEFI controller, supposedly encrypted.
I'd like to get a copy of that S&P Bin for the 730.....hmmm? Just as a different starting point. The folks at the DIY PROM forum say the best way to go is to tune your own bin.

silvernblack

You might want to look at a stock harness from a V-8 with a 730 ECM. I modified the MEFI harness, but from looking at the diagrams and the connectors from junkyard v-6 harness I also got....it would seem the connectors on the Ramjet are generic GM connectors. Might be cheaper to go to the junkyard and just get a 730 ECM and harness. I bought the ECM and the harness (just for wire and bunches of connectors) for ~60 bucks.

S10Wildside

By stock bin I meant stock for a 350 TPI. More specifically, the AUJP broadcast code.

I have no use for junkyard connectors. I have all new connectors and terminals for making new Ram Jet harnesses using the 165, 730, or 727 ECM.

silvernblack

all around terrible when I tried to run the AUJP. Matter of fact that's the memcal I have in there for limp-home, Moates adapter bypasses that BIN and allows using other programmable chips with different bins.

What I meant by the junkyard ECM & harness is: if someone wants to buy the intake, it sure looks like everything would plug right into the RamJet components.

S10Wildside

The IAC uses the same connector as the four terminal distributor connector on the TPI harnesses. The TPS and MAP connectors can be found on many newer GM harnesses.

Bummer about the AUJP. silvernblack, can you send me a copy of your .bin so I can get the motor to idle okay?

silvernblack

your forum email address....

S10Wildside

Well, I just found a really good deal on a new set of 1.6 rockers, GM part # 12370839.



I'm shopping around for the Ram Jet cam and 12558060 Vortec heads. Maybe within the next few weeks I'll have the Ram Jet installed and running. I'm going to use my low mile 87 350 TPI motor and build it to the Ram Jet crate motor specs.

89 Iroc Z

12558060 is for iron heads, don't ram jet creates come with fast burn aluminum heads? So that would not put your engine to a ram jet specs.

S10Wildside

You'd be surprised. The Ram Jet 350 comes with the iron heads and a 2 bolt main.

CamaroRS385hp

so this really is all you need to convert a stock l98 to the ramjet specs? well the list above, plus the ramjet intake obviously

dyeager535

That coil you have in the picture, does that actually mate up to the Vortec bolts, or is it like the "standard" coils that don't line up.

One minor frustration with my swap. (Vortec heads and TPI, coil bracket doesn't fit)

Parrydise7

iTrader: (1)

Have you thought about planting that Ramjet on a 383/425 short block? I don't know if it would flow enough to support that hp. Just curious.

Dustin Mustangs

iTrader: (1)

Granted, our L98 pushrods and lifters aren't the same PN as the ramjet units, but I have a hard time believing that they wouldn't work just as good as the ramjet PN's. They're both hydraulic rollers, aren't they? The vortec TPI swap doesn't require that these peices get changed, so why would a vortec ramjet swap? I guess I feel this is just a way to save some money w/o a loss in performance.

S10Wildside

The coil bracket does not line up with the bolt holes. No idea what it would mount to.

S10Wildside

I purchased this setup to make Ram Jet harnesses and possibly do some programming with the stock Ram Jet setup. This is why I'm building the motor to the Ram Jet crate motor specs. I was tempted to put a LT4 hot cam in there, but I ordered the Ram Jet cam to stick with my plans. After I get the motor running, I'm thinking about selling it complete with starter and all accessories for $4,000. That's a great deal considering the Ram Jet crate motor doesn't even have a water pump and is about $1000 more.

formulajoe_2

how much for a stand alone 730 ram jet harness?
i am very interested

OMINOUS_87

Can you get us some pics of the intake runner ports and inside the plenum?

The Superram on a SDPC base is also pretty wicked. I got that setup atop E-Tec 170 heads, puttin down 325HP/440TQ to the tires.

S10Wildside

I'm going to offer a stand alone 730 Ram Jet harness with 700r4 functionality and electric fan functionality for $300.00. That's $140 less than Street and Performance.

Here's an update on my Ram Jet motor build up. I pulled the heads, cam, and oil pan off the low mile 87 TPI motor I have. The motor looks very clean. I put in the Ram Jet 350 cam, expecting the 1.6 roller rockers early this week, and ordered the rest of the parts I need to finish the motor yesterday. I expect to have this motor running in about two weeks. I'd like to have this motor running before I sell any Ram Jet 350 harnesses. Keep an eye on this thread, I'll let everyone know when the Ram Jet motor is running. When the motor is done, it'll be for sale.