1955 56 57 Conversions Post here
Launching!
Joined: Jan 2007
Posts: 294
Likes: 3
From: Luling TX In the Hot Rod Shop
WOW that's nice. Who's pulley system. Is it a brushed finished? I feel the need to copy on my 57 post but i think i'll also paint the intake side of the turbo system for mine.
R^3
R^3
On The Tree
Joined: Jan 2006
Posts: 109
Likes: 0
Patrick - that looks like the GM cylinder (#12570277) that S&P shows in their catalog. Do you have any closer pics of it installed (from the engine side of the firewall)? I tried one of those and it hit the back of my LS7 so I am going to try a Wilwood cylinder which will mount to the left of the brake cylinder. I should have the parts this week and, if it works out, I will post pics of it when I get it finished.
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Launching!
Joined: Jan 2007
Posts: 294
Likes: 3
From: Luling TX In the Hot Rod Shop
If you look at Newman's and other conversion frames the only reason there using the stock frame is for the body mounts. they normally cut off the front to make more room for the cross members depending if you going to use the stock C4 cradle or keep the 55 Chevy front crossmember and locate the a arms like Progressive Automotive Engineering and make seperat plates that you can locate and mount to the existing frame without the C4 Cradle.
Me, I built a New Frame, I'll get some pics up later. I use the Stock corvette cradle, just too easy to over look.
If you want to have some real fun get a C5 or a C6 corvette suspension.
and I hope you have god like fabracation skills or deep pockets. 
I'll put picks up of it as well.
R^3
Me, I built a New Frame, I'll get some pics up later. I use the Stock corvette cradle, just too easy to over look.
If you want to have some real fun get a C5 or a C6 corvette suspension.
and I hope you have god like fabracation skills or deep pockets. I'll put picks up of it as well.R^3
TECH Enthusiast
Joined: Sep 2005
Posts: 618
Likes: 3
Power while Key on, Run, AND Crank What terminal on the ignition switch, or wire do I need to splice into, to provide power during Key On, Run, AND Crank?
I tried to start the LS1 last night and was unsuccessful. I may have figured it out (hopefully), but not sure of the solution yet.
I find that I do have power at the coil pack plug when the ignition is on. But not while cranking the engine. Doesn't sound right to me.
Now, I have a big Pink wire from my harness that is supposed to be hot during key on, run and crank, and it isn't hot while cranking. Sounds like my problem.
I had that Pink wire hooked into the Pink wire from my ignition switch. I'm not sure where to hook it for hot while key on, run AND crank.
I've tested from some of the wires on the ignition switch, and I seem to find power during crank, but not run, or vice versa. I'm stumped.
Any thoughts?
I tried to start the LS1 last night and was unsuccessful. I may have figured it out (hopefully), but not sure of the solution yet.
I find that I do have power at the coil pack plug when the ignition is on. But not while cranking the engine. Doesn't sound right to me.
Now, I have a big Pink wire from my harness that is supposed to be hot during key on, run and crank, and it isn't hot while cranking. Sounds like my problem.
I had that Pink wire hooked into the Pink wire from my ignition switch. I'm not sure where to hook it for hot while key on, run AND crank.
I've tested from some of the wires on the ignition switch, and I seem to find power during crank, but not run, or vice versa. I'm stumped.
Any thoughts?
Last edited by ewingr; Apr 29, 2007 at 08:30 AM.
TECH Enthusiast
Joined: Sep 2005
Posts: 618
Likes: 3
Success! Well, I called S&P and Mark told me that I need to splice together Ign1 and Ign2 on that old ignition switch to get power at both crank and run. I had thought about that, but was concerned that maybe the power at crank was just at the solenoid, and if spliced, I would have the solenoid kicking in all the time.
They had a diagram at S&P site (which I can't link here because they use frames). I hooked a jumper from the blue wire terminal (which normally feeds the coil and resistor) to the middle unused Ign1 post, along with the wire needing power at crank and run for the harness, and it works.
They had a diagram at S&P site (which I can't link here because they use frames). I hooked a jumper from the blue wire terminal (which normally feeds the coil and resistor) to the middle unused Ign1 post, along with the wire needing power at crank and run for the harness, and it works.
TECH Enthusiast
Joined: Sep 2005
Posts: 618
Likes: 3
Good and bad... Well, the good is that I got it running. Although it's a little hard to start.
I have a list of problems, some I didn't expect:
How could I have been so optimistic that I thought once it started, I'd be almost home?
I have a list of problems, some I didn't expect:
- The Check Engine LIght stays on. Of course, I have nothing to use to check what the code is
- The Electronic Throttle Body does not work. I checked it and thought it did, although I was by myself. To check it I put a nut up against the shutter in the TB (this was some time ago), and pushed the pedal, and the bolt was moved forward. But, now that I can start the car, it doesn't work
- My Classic Instruments may have problems, as that the fuel guage doesn't work; the Temp guage doesn't work, the Tach doesn't work.
- My heater pressure line leaks at the bulkhead inside the firewall. I pulled it, and put in a new O-Ring, and made sure it was good and tight. Still leaks
How could I have been so optimistic that I thought once it started, I'd be almost home?
On The Tree
Joined: Jan 2006
Posts: 109
Likes: 0
Originally Posted by AustinYukon
A little late but I just bought a '56 2 door hardtop that I am planning on installing either an LS1 or LS2 in.
I'll be asking plenty of questions!
I'll be asking plenty of questions!
Originally Posted by ewingr
Ask away. Looking forward to it.
I hope you are planning on spending a bunch of money. But, that's what its for, huh...
I hope you are planning on spending a bunch of money. But, that's what its for, huh...
Unfortunately, I know. I'm hoping to just start buying a lot of small stuff needed for the conversion then when I can afford to drop the big bucks on the motor/tranny, I will have all of the other parts needed.
I'm planning an Auto tranny and would like to modify whatever LS motor I go with.
Speaking of, Is there a parts list that I can pick over and start buying some of the small stuff?
On The Tree
Joined: Mar 2006
Posts: 112
Likes: 0
From: Dallas, TX
I've been following this thread since about the beginning and finally purchased a LS1 out of a '04 GTO last week. It's here and I'm real unclear about the front pulleys.
Seems the alternator and/or compressor will hit the frame since their both mounted low - even on the GTO.
I do not want to purchase an aftermarket pulley system, it's just not something I want to spend that much money on. Can the alternator just be mounted high using a corvette bracket? If I bought the whole pulley and bracket system off a C5 vette, would that allow nothing on the front to hit the frame? What about notching....how much notching of the frame are we talking about? Does anyone have any pics?
Thanks a bunch,
Jeff
'56 2 DR Sedan
Seems the alternator and/or compressor will hit the frame since their both mounted low - even on the GTO.
I do not want to purchase an aftermarket pulley system, it's just not something I want to spend that much money on. Can the alternator just be mounted high using a corvette bracket? If I bought the whole pulley and bracket system off a C5 vette, would that allow nothing on the front to hit the frame? What about notching....how much notching of the frame are we talking about? Does anyone have any pics?
Thanks a bunch,
Jeff
'56 2 DR Sedan
TECH Enthusiast
Joined: Sep 2005
Posts: 618
Likes: 3
Originally Posted by AustinYukon
Is there a parts list that I can pick over and start buying some of the small stuff?
And like cvman says, I bought a whole bunch of stuff not 'planned'.
JEMO
I have seen where people have used the stock pully system and A/C, etc. They DID notch the crossmember.
Regarding the pully system, I can't answer about the C5 stuff. I did purchase an afermarket system by March. I really like the Billet Specialties one, but they mount the A/C down low, and I'd still have to notch the crossmember, I believe, to use it.
BTW...one of my not planned for purchases was to get an F-Body harmonic balancer, as the vette one that came on my engine was 3/4" further out than an F-body one, and the March system was designed around F-Body.
Last edited by ewingr; May 23, 2007 at 01:06 AM. Reason: Correct typos