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-   -   1979 GMC S/B LS Swap-Carb intake (https://67-72chevytrucks.com/vboard/showthread.php?t=664373)

Macster 03-22-2015 10:34 AM

1979 GMC S/B LS Swap-Carb intake
 
4 Attachment(s)
Attachment 1380965

Attachment 1380966

Attachment 1380967

Attachment 1380968

mattcrp1 03-22-2015 12:42 PM

Re: 1979 GMC S/B LS Swap-Carb intake
 
Nice looking project. Do you have any more info?

Macster 03-22-2015 03:59 PM

Re: 1979 GMC S/B LS Swap-Carb intake
 
Sure
I had a ZZ 502 in her; nice for a daily driver when gas isn't 3.80 a gallon. I have done a few vortec swaps in 67-72 Chevy';s and decided to get a bit more economical.
2003 5,3 Vortec
Stock Ex. manifolds-I had header problems
Edel 7118 intake and performer 600 cfm
Stock fuel tank;electric pump/regulator
700R4-Monster Tranny
3.73 rear end


Just about it; nothing overly fancy and I have yet to see a carbureted LS in this area.

Macster 03-22-2015 04:11 PM

Re: 1979 GMC S/B LS Swap-Carb intake
 
3 Attachment(s)
Oh, if you are doing an EFI swap; been there on 67-72's. if I can help. just ask...

LSX408 03-23-2015 04:11 PM

Re: 1979 GMC S/B LS Swap-Carb intake
 
Very nice, good looking truck!

l92powered77 03-23-2015 07:54 PM

Re: 1979 GMC S/B LS Swap-Carb intake
 
Ok :chevy: first of all nice 79.really digging that color combo.that swap looks pretty damn clean. Keep up the ls swapping! Keep us updated, my next swap is a 67-72 or 77-81 camaro/trans am.might have to ask for help on c10.:uhmk:

mattcrp1 03-24-2015 04:03 PM

Re: 1979 GMC S/B LS Swap-Carb intake
 
Very cool, my 76 is almost "road worthy". How is the drivability with the carb set up over the efi set up? I have never driven a carbed ls so I have no point of reference.

Justin@EntropyRad 03-24-2015 04:21 PM

Re: 1979 GMC S/B LS Swap-Carb intake
 
Clean swap, was curious myself as to why the carb was used

mattcrp1 03-26-2015 09:16 AM

Re: 1979 GMC S/B LS Swap-Carb intake
 
What size tires are you running?

Macster 05-15-2015 08:59 AM

Re: 1979 GMC S/B LS Swap-Carb intake
 
Okay, First of all sorry for the delays; truck has been pitching a Fit.
The Carb LS swap is done; Edelbrock controller is not doing its job very well so back top the Truck Intake.

Macster 05-15-2015 09:01 AM

Re: 1979 GMC S/B LS Swap-Carb intake
 
Tires on the GMC 1979 were 255/70 15. Found the Rallys on a truck in the salvage yard. 15X8 and the center caps;I think 6 rims and caps for 100 bucks. seemed fair to me.

Macster 05-15-2015 09:05 AM

Re: 1979 GMC S/B LS Swap-Carb intake
 
Also, Carb intake was what I was referencing not running well; fowling plugs. like I said, back to the stock Vortec truck intake:
Fuel system will be a 1987 Fuel Tank and pump set up; pump puts out 135 PSI and the tank is baffled; 200.oo set up from Rock Auto.
Fuel out-efi Hose to 10 or 40 Micron inline. 3/8" Not to hose barb input; Braid 6 AN to the inlet on the intake. return line I think is 5/16 and low pre4ssure so I will probably run 5/16 EFI hose to the pump return; not sure if I have enough room for tube to AN crush fittings. I will try and post my results.

LSX408 05-15-2015 02:47 PM

Re: 1979 GMC S/B LS Swap-Carb intake
 
Nice clean swap!


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