Hello GbodyForum

[64nailhead]

Nice car (a little late to the nice car comment). If you want to go DBW, then don't worry about how it looks - if someone is willing to get on their knees and give you crap about how your pedal looks, then kick them in the butt while they're down there lol 🙂

If you haven't bought all of the parts in your 1st post links, then I'll recommend STRONGLY to grab a Terminator X Max. The harness and setup are so easy that it's surprisingly simple. The Terminator is made for the computer savvy guy that is not an electrical guru - EXTREMELY easy.

Regarding your rear, if you're going to stick with a 'stockish' tire size and tire, then a simple diff and ratio change will work great.

Best of luck, keep us posted and ask for help when needed - lots of people here willing to help.

Jim

 

[doood]

So I used the dbw just because it came with my engine and I didn’t want to change anything since this was my 1st LS build. I would think you could find the dbw pedals for free as it seems most guys discard them for cable. The pedal mod was super easy, just cut off the rod of the old pedal and cut off the dbw pedal, fit them where I wanted it and welded them. I was careful not to heat it up too much since there’s electronics attached. Instead of just welding the pedal to the firewall I chose to build a threaded mount so if something happened I could swap them out easier. Nice part is that you can put the pedal where you like, the factory throttle pedal is set back waaaay to far for my liking so I fixed that, and I like that it looks stock using the factory pedal. Mine was a truck pedal so it was way too far into the trans tunnel, not sure about the Cadillac pedal. I’m very happy with the dbw, no issues at all.

amazing. Much better weld than the YouTube video that I saw. It makes more sense the way you modified the electric pedal. you got me thinking maybe I'll do that and put the cable throttle body back on eBay. I got the trans off the engine today and I'm going to put the engine on a stand later in the week... I'm really struggling if I should put this old engine in the car not knowing its history or if I should buy a long block. Do you think I can have someone read the ECM and tell me how many miles is on the engine?

 

[BuickBroke$]

amazing. Much better weld than the YouTube video that I saw. It makes more sense the way you modified the electric pedal. you got me thinking maybe I'll do that and put the cable throttle body back on eBay. I got the trans off the engine today and I'm going to put the engine on a stand later in the week... I'm really struggling if I should put this old engine in the car not knowing its history or if I should buy a long block. Do you think I can have someone read the ECM and tell me how many miles is on the engine?

I’ve never heard of being able to check mileage via the ECM, but if it’s possible than cool. Honestly I had the same concerns, mine was a junkyard engine trans combo still bolted together with 220k miles. Damn LS engines are amazing, I’m definitely sold. Thing sat in my garage for 1.5 years before I got around to doing this, hit the key once and it started. Had it tuned and after 4 months at 10psi, and countless burnouts 🙂 it runs amazing, doesn’t smoke, doesn’t leak, just nuts! Literally completely stock except for injectors/turbo. I say just get it in and going, see how you like it, then if you want to make changes down the road you can. Just my two cents.

 

[Doug213xrj]

Hey Mike, Welcome from West Michigan.

Doug

 

[doood]

I got back the rebuilt 4l60e yesterday with a 4843TWBX GoPNH (precision of New Hampshire) refurbished torque converter, which was original equipment with the 5.7litre 2004 GTO. GTO weighs 500lb more than my MC (3700lb vs. 3200lb) and has 50 more horses (350 vs. 300). The powerband of the LM7 shows like 340ft-lb torque at 2500RPM. I'm having a hard time determining what will be the approximate stall speed with stock 300hp LM7. The engine/trans came from 2003-2004 RWD Silverado. Do I have a good torque converter? My friend told me it is probably 1700 RPM stall speed - I contacted the manufacturer and asked. I see people on gbody forum using 1900-2500 stall speed torque converter. I'm going to put a 3.73 posi in the 7.5" rear - found a kit with rave reviews here: https://www.quickperformance.com/GM-75-7625-10-Bolt-Posi-Gears-Bearing-Kit_p_20409.html

 

[BuickBroke$]

I got back the rebuilt 4l60e yesterday with a 4843TWBX GoPNH (precision of New Hampshire) refurbished torque converter, which was original equipment with the 5.7litre 2004 GTO. GTO weighs 500lb more than my MC (3700lb vs. 3200lb) and has 50 more horses (350 vs. 300). The powerband of the LM7 shows like 340ft-lb torque at 2500RPM. I'm having a hard time determining what will be the approximate stall speed with stock 300hp LM7. The engine/trans came from 2003-2004 RWD Silverado. Do I have a good torque converter? My friend told me it is probably 1700 RPM stall speed - I contacted the manufacturer and asked. I see people on gbody forum using 1900-2500 stall speed torque converter. I'm going to put a 3.73 posi in the 7.5" rear - found a kit with rave reviews here: https://www.quickperformance.com/GM-75-7625-10-Bolt-Posi-Gears-Bearing-Kit_p_20409.html

I’ve got their 9” I’m my car, they make nice stuff, did have a few issues, but they addressed them all and made them right. They definitely stand behind their product.

 

[5spdCab]

I’ve got their 9” I’m my car, they make nice stuff, did have a few issues, but they addressed them all and made them right. They definitely stand behind their product.

Don't mean to hi-jack this thread, but I see you are from Vancouver. I am driving down to Battle Ground from Seattle in the morning to pick up an engine from my brother for a non-gbody project that I want to get started on. Will be driving my '78 Caballero, expecting to be in the area from about 730 to about 830, then back home to Seattle by lunchtime.

 

[Supercharged111]

I got back the rebuilt 4l60e yesterday with a 4843TWBX GoPNH (precision of New Hampshire) refurbished torque converter, which was original equipment with the 5.7litre 2004 GTO. GTO weighs 500lb more than my MC (3700lb vs. 3200lb) and has 50 more horses (350 vs. 300). The powerband of the LM7 shows like 340ft-lb torque at 2500RPM. I'm having a hard time determining what will be the approximate stall speed with stock 300hp LM7. The engine/trans came from 2003-2004 RWD Silverado. Do I have a good torque converter? My friend told me it is probably 1700 RPM stall speed - I contacted the manufacturer and asked. I see people on gbody forum using 1900-2500 stall speed torque converter. I'm going to put a 3.73 posi in the 7.5" rear - found a kit with rave reviews here: https://www.quickperformance.com/GM-75-7625-10-Bolt-Posi-Gears-Bearing-Kit_p_20409.html

4.3 V6 converter stalls around 2000 RPM.

 

[BuickBroke$]

Don't mean to hi-jack this thread, but I see you are from Vancouver. I am driving down to Battle Ground from Seattle in the morning to pick up an engine from my brother for a non-gbody project that I want to get started on. Will be driving my '78 Caballero, expecting to be in the area from about 730 to about 830, then back home to Seattle by lunchtime.

Sorry I missed this, would have been cool to meet up

 

[5spdCab]

Sorry I missed this, would have been cool to meet up

Yeah, would have been nice. I arrived at about 730am, left for home about 915am because my wife was mad that I went down to begin with. I figured that I had better get back home earlier rather than later.