7730 for a RamJet 350 swap - Third Generation F-Body Message Boards


DIY PROM Do It Yourself PROM chip burning help. No PROM begging. No PROMs for sale. No commercial exchange. Not a referral service.

7730 for a RamJet 350 swap

Reply
 
Thread Tools Search this Thread
Old 04-20-2017, 10:02 PM   #1
Junior Member
Thread Starter
 
Join Date: Jan 2013
Posts: 11

7730 for a RamJet 350 swap

Backstory:

Back in 2001 or so we swapped a ramjet 350 crate engine into my brothers 92 RS Camaro in place of the stock 3.1. Fast forward to 2017 and he's bought a 15 Camaro and given the RS to my Dad (who paid for the crate engine and all back then when brother was in high school anyway). Dad isnt a car guy so he's found a 67 C10 with a blown 283. We're going to pull the RamJet out and swap it into the c10, but also install a LT4 hot cam cause Dad wants a little thump at idle.

Anyway realizing the Ramjet ecu's suck for tuning, I want to use the 7730 still in the 92 RS. Ive done a bit of tuning on TBI stuff but PFI is all new to me. From reading on this site and gearhead-efi I've just managed to confuse the hell out of myself, LOL

Now for my questions:

1. I assume there will be no problems using the original 3.1 memcal azty as long as I jumper the netres to put it in 8 cylinder mode. I plan to install a new 27sf512 on the memcal like I did on the 7427 Memcals from my TBI swapped F150.

2. Can I use a memcal from a 7427 in the 7730, assuming I change the prom and possibly jumper the netres? I can find them in the junkyard much more easily here. That will have the 5.7 knock board at least, or does this not work at all?

3. Can I swap the 7427 knock board to the 7730 memcal at least, or is it easier to just remove it and use an external board. I already have an external board from a TBI truck. If I remove the knock board from the memcal how do I jumper it? I haven't found clear instructions for that with all my googling.

4. Finally assuming all this is even possible, can someone point me to a decent starting BIN for the 7730 for the ramjet, which is basically a 99 Vortec 5.7 so I can have a solid foundation to begin tuning from?
Tim C is offline vBGarage Page   Reply With Quote
Old 04-21-2017, 10:41 AM   #2
Supreme Member
 
Join Date: Jan 2003
Posts: 1,695


Re: 7730 for a RamJet 350 swap

I'm not sure about questions 1-3, but on 4, you could probably start with my Miniram Start Bin.

Short runner, log-style plenum... my guess is the Ramjet manifold won't behave terribly differently than a Miniram (at least to the point where it'd more efficient to start with a Miniram bin than a TPI bin... especially when dealing with the accleration enrichment stuff, which is literally like black magic for these types of manifolds).
ULTM8Z is offline vBGarage Page   Reply With Quote
Old 04-21-2017, 11:16 AM   #3
Junior Member
Thread Starter
 
Join Date: Jan 2013
Posts: 11

Re: 7730 for a RamJet 350 swap

Thanks ULTM8Z. I assume the miniram start bin stuff is on your website linked in your signature? If so I will check that out tonight after work. That was my biggest worry, actually. Questions 1-3 were mostly seeking conformation that I had everything correct in my own head, LOL
Tim C is offline vBGarage Page   Reply With Quote
Old 04-21-2017, 12:11 PM   #4
Supreme Member
 
Join Date: Jan 2003
Posts: 1,695


Re: 7730 for a RamJet 350 swap

I forget... if it isn't, PM me with your e-mail and I'll send to you.
ULTM8Z is offline vBGarage Page   Reply With Quote
Old 04-21-2017, 12:13 PM   #5
Moderator
iTrader: (1)
 
Join Date: Mar 2002
Location: Chasing Electrons
Posts: 16,204
Car: check
Engine: check
Transmission: check


Re: 7730 for a RamJet 350 swap

Quote:
Originally Posted by Tim C View Post
1. I assume there will be no problems using the original 3.1 memcal azty as long as I jumper the netres to put it in 8 cylinder mode. I plan to install a new 27sf512 on the memcal like I did on the 7427 Memcals from my TBI swapped F150.
That will work. The limp mode calibration and knock filter won't be ideal, but it will work.

Quote:
2. Can I use a memcal from a 7427 in the 7730, assuming I change the prom and possibly jumper the netres? I can find them in the junkyard much more easily here. That will have the 5.7 knock board at least, or does this not work at all?
I'm not sure about doing this. I've never tried it or looked into the '7427 MEMCALs that much to know whether they will work or not in the '7730 ECM.

Quote:
3. Can I swap the 7427 knock board to the 7730 memcal at least, or is it easier to just remove it and use an external board. I already have an external board from a TBI truck. If I remove the knock board from the memcal how do I jumper it? I haven't found clear instructions for that with all my googling.
You can remove the filter from the '7427 MEMCAL and replace the one on the 3.1l MEMCAL. This I've done (and others) and it works.

RBob.
RBob is offline vBGarage Page   Reply With Quote
Old 04-21-2017, 02:06 PM   #6
Junior Member
Thread Starter
 
Join Date: Jan 2013
Posts: 11

Re: 7730 for a RamJet 350 swap

Thanks RBob. I may try the 7427 Memcal I have extra. If it doesnt let any magic smoke out then worse case I may just have to cut a jumper and it'll still work in my TBI 7427. If it works then it's already got the 5.7 knock filter.

Also, If I use the knock filter from my 7427 MEMCAL, I assume I use a matching knock sensor itself? I.E. one from a 93 c1500 5.7?
Tim C is offline vBGarage Page   Reply With Quote
Old 04-21-2017, 04:13 PM   #7
Moderator
iTrader: (1)
 
Join Date: Mar 2002
Location: Chasing Electrons
Posts: 16,204
Car: check
Engine: check
Transmission: check


Re: 7730 for a RamJet 350 swap

I'd stay with the stock knock sensor. Just check that it measures about 3.9K in resistance. The truck engines that use the '7427 PCM likely use the same as the '90 - '92 f-body 5.7l sensors.

RBob.
RBob is offline vBGarage Page   Reply With Quote
Old 04-22-2017, 02:00 PM   #8
Junior Member
Thread Starter
 
Join Date: Jan 2013
Posts: 11

Re: 7730 for a RamJet 350 swap

Appreciate the help. I'll start gathering parts for the swap. We're waiting for the title to come back on the truck before we pick it up, so far just left a deposit to hold it. Not too worried because the seller is a state trooper, lol.

ULTM8Z I sent a PM with my email address.
Tim C is offline vBGarage Page   Reply With Quote
Old 04-22-2017, 08:06 PM   #9
Supreme Member
 
Join Date: Jan 2003
Posts: 1,695


Re: 7730 for a RamJet 350 swap

Yep I just emailed it to you.
ULTM8Z is offline vBGarage Page   Reply With Quote
Old 04-22-2017, 10:34 PM   #10
Junior Member
Thread Starter
 
Join Date: Jan 2013
Posts: 11

Re: 7730 for a RamJet 350 swap

Thanks again ULTM8Z. It's going to be a little while before I make use of the bin, I've still got to get the truck here and get the old 283 out of it and the ramjet out of the camaro, but I'll poke around tunerpro with the bin and get familiar with the new to me mask. Hopefully I can report back later this summer with good news.
Tim C is offline vBGarage Page   Reply With Quote
Reply


Go Back   Third Generation F-Body Message Boards >

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 09:22 PM.


All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.
 
  • Ask a Question
    Get answers from community experts
What's your question?
Send