jtriggy

My new ramjet is now set up outside the car. At first blush/test install it looks like some mods will need to be done. Anyone have experience in what mods need to be done to get this to sit nicely, i.e. oil pan, mounts, etc.?

Got: NAL-12499120, NAL-12497697 mated with SUM-700300.

RetroRanger

Looks interesting what's a ramjet 350 from?

jtriggy

Purchased GM 350 Ramjet new.

oldcutlass

Just treat as a Chevelle, you'll need chevy frame brackets and engine mounts, wiring changes as needed for the EFI, move starter wiring to the opposite side and relocate sensor wires as needed. I would think the oil pan should work, but a simple phone call should answer that question. Then what ever transmission requirements necessary,for your application. I'm not sure of what fuel pump needs are for that application and again a simple phone call should get you through that. Headers for your year Chevelle will bolt right up.

jtriggy

Yes, I have the mounts correct for this engine. Would the chevy frame brackets be mounted in a different position on the frame? Looks like the stock olds brackets are too far back.

You'd be surprised how the simple phone call doesn't work so well. The advice from summit tech is to remove the oil pan and see where the measurements lie. Ug.

Thanks!

oldcutlass

If the Ramjet fits a 70 Chevelle with no pan issues it will fit your car. I think this picture explains the mounting holes:

jtriggy

If this solves it, you're going to be my best friend forever! Congratulations!

garys 68&72

68-72 chevelle frame mount on a 72 Olds with the Olds mounts removed.
Also look up tall/narrow vs short/wide chevy frame and motor mounts.

jtriggy

Can't see the photo as it seems too small. Will have to look up those brackets as I didn't know they come in different flavors.

Thanks!

cutlassefi

Haven't seen this conversion before, good luck. But the best thing you can do is change the MEFI controller to something else, they're horrible.

garys 68&72

It should be a thumbnail that expands when you click on it.
But you can find full size pics of engine compartment with Olds and chevy mounts as well as pic of short/wide vs tall/narrow mounts in my build thread.
https://classicoldsmobile.com/forums...-iii-swap.html

jtriggy

Alright, I think I've learned I need other frame brackets but I'm more confused about which after reading several links (tall, short, wide, slim, custom).

I have a new summit NAL-12499120 engine (350 Ramjet) with no other mods than adding the serpentine kit, a SUM-700300 tranny, HOK-2116-1HKR headers (not installed yet) and ENS-3-1120G motor mounts. This is for a 1970 Olds Cutlass A-Body.

On dry run, it looks like the motor mounts aren't going to line up with the frame mounts.

Anyone kind enough to know a part number of the frame mounts I'd need?

oldcutlass

This is the correct setup for a small block Chevy in a 68-72, compare with what you have.
http://www.ss396.com/chevelle/ACE-9794KIT.html

76olds

Nice engine, a friend of mine put one in his 74 malibu. Runs great lots of power ! Good luck with your install. You have awesome help here !!
Put-r-ther
Eric

jtriggy

Update: Ordered your recommendation and received yesterday. I put the frame brackets on...what a PITA getting to those bolts! Will put motor mounts on next week and drop it in briefly to check fit.

oldcutlass

Yeah, they are a bitch especially if you lose a socket in there. It took me longer to fish the socket out than it took to get the remaining bolts in. Getting to the long attaching bolts to the engine/frame bracket assy is also a bitch after the headers are on, so make sure they are tight prior. I had to heat and bend a wrench for that job later.

jtriggy

Was wondering if I'd be able to put headers/engine/tranny in all together or if I had to put the headers after engine/tranny install. What were you able to do?

oldcutlass

I'd put the headers in separate. You may have to lift the engine to slide them in from the bottom. Once that's done and they are laying in there then slide the long bolt to the engine mounts and tighten, Then attach the headers.

jtriggy

Update: Dropped just the engine back in with your recommendation (engine & frame mounts) and seems to fit nicely! It moved the engine higher and further towards front of car and seems to not require any oil pan mods.

Took the engine back out to install some minor accessories and will do another drop-in fitment test with the tranny attached and the headers sitting in the engine compartment.

THANKS!

oldcutlass

Glad its working out, lets see some picks when its in.

jtriggy

Anyone know of instrument cluster for my new Chevy Ramjet 350 that I can put under dash to give me all up-to-date EFI information (Tach, pressure, temps, voltage, etc.)?

oldcutlass

I don't know what you would use for the EFI, however I use the 3 gauge mechanical Sunpro set under dash and a Supertach next to it. They may have been bought out by Bosch... Heres a link at amazon:
http://www.amazon.com/s?ie=UTF8&page...unpro%20gauges

garys 68&72

Are you wanting a cluster that will plug into the ecu?
If so, that limits you to a GM cluster from that vehicle or an OBD scan tool.
But you can use any gauges you want just by using the appropriate senders.

cutlassefi

If you have the stock MEFI controller on that Ramjet then to my knowledge the answer is nothing. Plus it only has a narrow band O2 so that feedback would be limited anyway.

jtriggy

Ah, so perhaps I'll just use my existing gauges mounted under the dash. I just need to figure out where on the ramjet they connect to. The Olds engine was a bit more clear on where they go and the ramjet is kinda crowded.

garys 68&72

Solves that....
If you want your gauges to match, you should consider the trans you're using. If it only has mechanical or electric speedo output, it will be easier to get a gauge set to match that.
What gauges do you want to use?

jtriggy

Had one little issue with a rivet missing. I figured this was important. I called ss396 and they are getting me replacements asap.

jtriggy

Ok, put the engine and tranny in on previously recommended frame mounts. Seems to fit nicely. Will take some pics and post soon.

Now onto the hard part...getting it running in the next month or two.

I now have this Chevy 350 Ramjet now on the chevy frame mounts with Chevy TH350 (SUM-700300) and a Chevelle rear end in my 1970 Olds Cutlass A-Body. (no beatings please).

Anyone know a plug and play driveshaft to order? I'd rather not have my old one modified.

oldcutlass

Your old drive shaft should work. You may have to change ujoints.

garys 68&72

You'll need to figure out your trans output, probably a 27 spline th350. And also your chevelle rear yoke U joint size. I think they used the 1310 for 10 bolt and 1330 for 12 bolt, but double check. Google those for measurements. Adapter u joints are available with 1310 on one pair, 1330 on the other, if needed. Then measure the length you need.
I ordered mine from thses guys, a simpler solution than modifying a beat up 40 year old shaft. Probably the same combo you have, TH350 output, 1310 ujoint for the 10 bolt chevelle rear.
https://www.southwestspeed.com/index...ub=Driveshafts

jtriggy

It's been a while but I'm continuing where I left off.

Focused right now on determining what crossmember to buy to allow for the hooker headers to easily mate with exhaust pipes.

oldcutlass

Is the transmission bolted to the cross member? How does the other header line up with the cross member? You have mismatched mating surfaces from your collector to the exhaust system, flange vs ball and socket.

jtriggy

Yes, tranny is bolted to crossmember. Both headers seem to be offset.

I'll have the muffler shop fix the flange when the time comes. I'm simply looking to make sure they have room to do so. Right now it looks like the crossmember will interfere with proper mating without some odd bends.

Wondering if this https://www.summitracing.com/parts/sum-770308/overview/ would do the job.

oldcutlass

I would think the humps in the aftermarket cross member are in the same place as the stock one. If the headers weren't coated I'd say heat them up and bend them over a bit.

garys 68&72

That's a bit odd considering the SBC in the A body frame fits fine.
Are the headers for a SBC in a 70 chevelle?
IIRC, there were some differences between the chevelle and BOP crossmembers when I put the LS in my 72.
Maybe check out the chevelle crossmember for comparison.

jtriggy

These https://www.summitracing.com/parts/hok-2116-1hkr were the headers recommended and purchased for the Chevy Ramjet 350 EFI crate I installed.

oldcutlass

Since the application includes Chevelle, they should fit.

RetroRanger

Could it be the engine mounts on the frame ? I read at the beginning of the thread regardarding some tall mounts is it related to that ?

oldcutlass

No, if you look at the pic the headers are not pointing to the factory area that the exhaust would normally run they are off to the sides. The height looks fine. I would suggest calling Hooker. Normally I would heat the tubes and bend the collectors over on inexpensive headers, but yours are coated and it will probably damage them.

garys 68&72

Are BOP and chevelle crossmenbers the same? You have BOP.