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Street/strip 350 build help!

  
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Street/strip 350 build help!

 
Bigcountry93 Bigcountry93
New User | Posts: 4 | Joined: 12/12
Posted: 12/03/12
10:08 AM

I am building a 1989 350 to put in my 2004 silverado 1500, I have the ECU, wiring harness, ect for the swap. I'm wanting to build a strong motor that will be functional on the street as well as to have a little fun on the weekends. Thoughts for a cam, set of heads and maybe an intake would be appreciated, as well as any other help. Thanks  

76Skylark 76Skylark
Guru | Posts: 854 | Joined: 12/11
Posted: 12/03/12
12:02 PM

the only reason I would take away the F.I. you have now would be for a carb. there is as much out there for your truck today, as older stuff.you'll do ALL the same changes to the Long block and the Injection stuff is all ready to be bought and installed,I LOVE CARBS but would NOT retro anything but OBD I /TBI.  

68scott385 68scott385
Guru | Posts: 1990 | Joined: 10/09
Posted: 12/03/12
03:06 PM

AAAAAAAAgreed

I'd never swap a gen1 or gen2 into the house of an LS motor, but that's just me. If you have the 4.8 or 5.3, seems like it'd be easier to swap in a 6.0 or add a turbo to the existing motor.  
68scott385 68scott385 68scott385

Bigcountry93 Bigcountry93
New User | Posts: 4 | Joined: 12/12
Posted: 12/03/12
03:12 PM

The truck currently has a 4.3L which personally is crap. It's not even good on fuel. But I don't like the newer motors because of all the electronics. I was taught on older cars and that's the route I would like to take.  

76Skylark 76Skylark
Guru | Posts: 854 | Joined: 12/11
Posted: 12/03/12
04:50 PM

I would Guess the 4.3 would be in a load soon as it dropped in Drive so I feel your Pain. Next -Thats going to be One Hell of a lot of work.Wayne7122 will be able to tell you a plug and play that would most likely use your Existing Harness and you could poss. just plug V-8 computer and install a 6.0 or better and Go.and as far as being confused about the electronics " untill I started listining to Wayne I was Over whelmed" He makes it easy to follow and know why.If you must use an old 350 we can hook you up,have no fear,but your ride may be Down for a few pay checks, you'll spend a grand to get the 350 to perform like the late stuff. And really you will spend a lot more than that to do the conversion.  

Bigcountry93 Bigcountry93
New User | Posts: 4 | Joined: 12/12
Posted: 12/03/12
06:37 PM

The truck currently has a 4.3L which personally is crap. It's not even good on fuel. But I don't like the newer motors because of all the electronics. I was taught on older cars and that's the route I would like to take.  

Bigcountry93 Bigcountry93
New User | Posts: 4 | Joined: 12/12
Posted: 12/03/12
06:44 PM

Sorry about reporting that guys, well the truck will be down for a few weeks. This isn't something that I plan to do overnight, but at the same time I understand that an LS motor may be more efficient over all, the trucks main use will still be a daily driver so it doesn't have to be screaming fast. Also on that note if something is to break which it will over time I would be more comfortable and confident in my work on an 89 vs an 09.  

Dave632 Dave632
Addict | Posts: 2225 | Joined: 07/08
Posted: 12/03/12
07:11 PM

I had the 6.0 LS motor in my 2003 2500. It pulled the truck and a 24' trailer nicely. I never took it to the track but my guess is that it would be a high 15 second 1/4 mile ride. Not real quick but respectable. It was almost 3 tons in weight.
In a 1500 with about a 1000 lb less weight you would probably be looking at a mid 14 second truck. The truck got about 12/15 city/hwy MPG.
This would make a nice motor for your truck in my opinion.  
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pepsi1 pepsi1
Guru | Posts: 1718 | Joined: 09/11
Posted: 12/03/12
11:24 PM

I had a 2002 GMC 2500 with a 6.0, and I pulled a trailer with 2 race cars and extra gear. With 4 guys their gear, and a couple that could loose weight. Went on a 3 month summer tour out west. Went over the rockies the Grand Titons, and we switched drivers, I drove it in OD all the time I only used the Tow/Haul mode when we were stopped. I had a lot of weight also. I'm glad they never pulled us over. Got 15 MPG at times but averaged 13MPG with a 4:10 rear gear.
  That truck like yours Dave pulled.I never saw the trans temp was 170/190. The oil temp was 195/210 pulling the hills. I let it do all the shifting.
  2 Years later that truck saved my life. I was hit head on by a drugged up and drunk punk... Mad
Bob  

pepsi1 pepsi1
Guru | Posts: 1718 | Joined: 09/11
Posted: 12/03/12
11:30 PM

I forgot:
I agree with Scott. Pick up an LS 6.0 with a 4L80E attached, all the eletronics. Put that in your Silverado. You'll need atleast a 3:73 rear gear. They pull their heart out. They make nice cams for the LS series engines too.

Bob