75 GMC sierra classic face lift and conversion to short bed

[sam in vista]

long time no post!!!!
just traveled to another country for few months.
got an american auto wire ,the complete wiring ,cause my car didnt have wire and stolen



received the door hings from sandblast and started to do undercoat on hings and new steps







after that we rubberized inside the rear fenders , steps and the cab floor for more last standing and and protecting from rust









bought primer surfacer and sprayed ,never i expected to get amazing result,it was awesome ,and it was the first time somebody did this process in iran

















received new items from US :











the next day we had some sealant jobs on the doors and tailgate to make them ready for base coat







and finally base coat

















after fixing the fenders and steps just we did some sealant on seams

[sam in vista]

after few days we found painting room,unfortunately is too difficult to find useful painting room in my city ,all of them are dirty ,have gaps between doors,blower and suction not work,and lots of problems.
anyway we went there ,spent 2 hours to clean the room,then started testing the wind compressor,suction and blower,what a lucky... was awesome ,worked perfect.
we sprayed 5 times of top coat for maximum cover and after that just 2 times of clear coat.
then we set the trumpeter on 65C ,but never reached on it,just stopped on 57 and we kept the car about 2 hours ,very glossy and shiny






















and .......

[bob_o]

Very nice truck. Keep up the good work!

[Katrina/10]

Nice work!

[77K10Silverado]

Kool!

[jott_06]

Paint looks great. What are your plans for wheels and tires?

[sam in vista]

thank you very much guys for following my posts

Originally Posted by jott_06

Paint looks great. What are your plans for wheels and tires?

Dear Jott already bought aluminum 16" X 10" rims ,kept 5 lugs
but the truck still is lifted and need to be lower than this ,just wanted to do it at the end

the tires are 16X55X295 , just died to found this tires in Iran,god damn it ,we dont have lots of brands and sizes here,and it costs a lot if i wanted to order from US

not bad ,i like it









started to fix the new wiring harness ,it was really easy with instruction that provided with harness,thank you american auto wire to make me happy with this










during this job ,cleaned the headlight bezel and painted the headlight housing .missed some of headlight adjust springs ,so made it here











and changed the old windshield to new and original one ,to get new looks

[sam in vista]

does anybody know,how can i upgrade manual window to power window?
i really dont want to buy the universal kit or buy complete power window set,
in need some guide like this video,but its not clear for me

https://www.youtube.com/watch?v=hG23ms_x74M

just kept an old regulator and modified that.

need help ,Pleeeeeaaaaaassssssss

[sam in vista]

unfortunately i couldn't find any pattern to upgrade my manual window to power window.the problem is ,i bought the power window equipment ,it was for 86 model ,and right now we cant fix it on my door.need to change some stuff and modify ,that's why i need pattern.
this is the regulator and all stuff



any way we moved the car to the friends garage to work on gearbox which had a huge leak on we changed the o-ring













after that we started to work on big project ,when i bought the car i was interested to have ZR1 roll pan.but unfortunately discontinue the fiberglass one in US and no long avail in US, i was looking for long time ,but no chance ,and finally found the steel one on ebay which it was really expensive ,specially the shipping cost was high ,so we decided to make it here.
i started to have some plane







found the CNC and Laser company ,bought the metal sheet and ..











after that we did the tig welding on the separate pieces .





and we fitted on the car,was perfect



there was so hard to find a expert handy man to make light housing ,but we were lucku and ...bingo









we sent the panel for paint ,and during this time fixed the front grill,light and bezels









then fixed the roof light and engine wiring









before to send the panel for paint we checked all the things to be perfect.







and finally painting

















this is the fiber one that i couldn't find



this is the steel one from US ,it cost me about 1200 $



and this is what we did:








still have problem with power window and we cant fix it on door , i dont want to buy universal regulator ,if any body knows how to do that ,please dont hesitated to help

[73Super8]

Great project! Awesome custom work!! Truck looks great!!

[sam in vista]

roll panel painted and installed with tailgate







and then started for polish and wax ,i bought a polish kit from US,but i couldnt send them ,cause of hazardus issues .
for this reason ,i had no choice ,thats why i got trtule polish kit and used them





you can see the difference between rear fender and door



and finaly done











i ordered the tailgate GMC decal from classic industries ,but unfortunately lost them within delivery and shipping,thats why decidet to do it by paint job

[tinydb84]

The roll pan isn't my style but man you are talented! Love the color too.

[sam in vista]

thanks david ,by the way i like this roll pan

we'r back to start 2nd step of project,but really need help and guide.

as i told car has the inline 6 and TH-350 and 12 bolt rear end wich is i dont know the ratio.but im pretty sure all parts are stock parts.



right now i want to swap the engine with V8 ,350 performance ,and want to buy the turn key crate engine ,i have 2 options, CRICKET ENGINES and FASTCO.(base on my budget)

http://www.ebay.ca/itm/CHEVY-350-HI-...item2804ea8d99

http://www.ebay.com/itm/Chevy-350-en...item2a56e02a9f



well actually my goal is not to go to drag race, just want to have some fun with japanies,korean and germany's cars on weekends ;D

but i have no idea what to choose ,im not really thecnical guy ,thats why i need to know; with these engines ,what is the best choice of transmission? do i need to keep the stock th-350 and rebuild it with race kit or need to swap it to th-400? what is the best choice of rear end posi? of course i want to have the LSD posi ,but dont know with brand and which ratio? the same thing about tourqe converter ,and final is exhaust system,i prefer to buy flowmaster muffler ,but really dont know what i have to choose,i want really deep sound which is not disturb on long distance ,few days a go i saw a 2015 mustang GT ,the sound was great,on normal drive the saound was really dip and no noisy but when got rpm ,it was aggressive.dose any body know which serie is like that,pro series?super50? or.. (i think they called mild to aggressive)

so right now im gonna separate my quastions
1- choose of engine
2- transmission (best choice)
3- rear end posi (wich ratio)
4- tourque converter (what stall)
5- exhaust system (prefer flowmaster)

thanking in advance ,plese dont hesitated to help ,share your information and experience .

[tinydb84]

Originally Posted by sam in vista

so right now im gonna separate my quastions
1- choose of engine
2- transmission (best choice)
3- rear end posi (wich ratio)
4- tourque converter (what stall)
5- exhaust system (prefer flowmaster)

1. I'd take a roller cam over any flat tappet cam. For that price you might be able to get a 383 (or go LSx).
2. For that power level a th350 should be fine.
3. If you are going with a th350 (or th400) then you probably want something near a 3.08 if you are going to be on the freeway for any amount of time. If you get a 700R4/4l60 then I would go 3.73. I have only had Detroit Lockers so I'm not much help there.
4. You should call/email the company and let them know what you have. It depends on engine, weight, cam, transmission, gears, and purpose.
5. I have ran a lot of different flowmasters over the years: 10, 40, 50 series. My daily driver is a 350Z with no mufflers. I love loud annoying cars but I think most people wouldn't like the noise level of the 10's. I am kinda over that particular sound though. Look on Youtube and play some exhaust clips of the various different brands. See what you like best.

[sam in vista]

thanks david

well i know with that price maybe can get 383 or ls
but base on my budget i preffer to keep my th-350 ,thats why im not going with 383 cause i have to change the 350 to 400,and the problem for LS is i dont wanna have the injection engine ,the setup for ecu is really hard in IRAN and we dont have expert guys overe there, so its better to go with carb engines ,and much easier to find parts for carbs engine,
i heard the 700 is longer than 350 ,so i have to modify my drive shaft again,and really i dont want to do it,cause alrady did it during shortening.
would you let me know what is the difference between the roller cam and flat tappet?

[tinydb84]

It must be hell to get parts out there....

You can run the th350 with a 383 or an LS. They make carb kits for LSx engines so you wouldn't need to run or tune the EFI. The 700r4 would require changing your drive shaft.

The flat tappet cams tend to wear faster and have to be broken in properly or you will ruin the cam. Around here they need oil with more zinc in it. Not sure what oil you have out there (may not even be an issue). The roller cams will last longer and can be more aggressive than the flat tappet cams. The only real downside is the price as you can see they cost more money.

[sam in vista]

man you tempt me to go with 383 or LS
as you said ,your right ,its worse than hell here to find part ,but im lucky, can buy and find parts from US.

still i guess the 350 turn key engine is more cheapper for me and easier to swap and install ,no headache .if im going with LS have to buy the carb kit, separate and have to install it,which is coast me more

anyway i couldnt to find the 383 turnkey with same price as 350 ,they are higher ,at least 1000 $.

[77K10Silverado]

Looks awesome!!

[jrcaprai]

looks like I got one of the last of the fiberglass rollpans... although I like yours better!

[sam in vista]

Im back, its been while
but never gave up on my beast
we had lot of progress on project which Im going to post gradually
I had to move the car to other garage since the car has been slept for more than 1 year.





we ended up to buy a LS1 engine which was belong to 04 GTO
fortunately the engine was so clean and low mileage, but the jackyard guys didn't know how to cut the wires and they messed with it



so the wires missed the cabin part and we had to repair it
In addition they lost the pedal and key which was huge deal for us
so we had to prioritize below jobs
1-remove VAT
2-since we didnt have pedal and cabin wires we had to convert from DBW to DBC
thanks god we got the blue green ECM which has the DBC chip
but we faced other issues as well

my truck is full option and wanted to keep the AC, the GTO compressor is down the engine and we had to relocate it because was so tight in chassis



so I bought the LS AC bracket and moved up
another issue we faced was the oil pan, the GTO has front swamp oil pan which wont fit on truck, therefore I bought the GM Performance rear swamp oil pan





and last was the headers and engine mount bracket
luckily, speed engineering have well and fit designed for my application


and here how it looks on engine






in next post I dig in deep more about difficulty of repairing the wires and throttle body conversion

[sam in vista]

Despite having the DBC chip in blue green ECM, its was not easy to convert from DBW
the harness repair had its own challenges because we had to change the TPS and IAC and their socket changed respectively.
I made mistake and bought those chines 90MM throttle body with spacer to 85mm

after repaid the wire completely
I tried to start the engine, I was able to turn it on and keep it on idle smooth
the only issue here was insanely loud whistling from TB
but the main issue is the engine wont rev at all and drops the power
I noticed the TB does not send any signal to the ECM
double checked the TPS and wiring again, no issue
I replaced the TB with factory Corvette LS1 TB, no result
fuel pressure is good
Injector needles are clean and tested under pressure; works great
tried with airflow meter and without, but same
MAF and MAP sensors are placed in their own slots
have new spark plugs

not sure why ECM does not read from TPS


PLEASE FEEL FREE TO HELP

here is the video :


LS1 Whistling




here is the parameters reading: