Most of your questions are already answered in various build threads, just have to search. as for the exhaust question 3 inch is too big for a 4,3, you will lose low end torque. Should be 2 1/4 into 2 1/2 for that size engine. Welcome to the group.
With my stock 5.3 swap this is exactly what I ran for exhaust sizing. Seems to work well and sounds good with the stock sized magnaflow I put on.I got a 2001 4.8l. On the exhaust does 2.5 "from headers to 3" sound good?
2003 Suburban Transmission will bolt up directly to the 4.8 with the Suburban flexplate and nothing else. A 1998 4.3 S10 transmission will also bolt up to the 4.8, but will need a spacer on the flexplate.Second question on the transmission, what is the best transmission/torque converter to run? I will be getting truck tuned. I have access to a 2003 suburban tranny and 1998 s10 tranny. I have also read the s10 torque converter is better to run.
This has been done. Check out LT1swap.com for engine harness how tos, schematics, and pin outs. You can either do a stand alone or wire into the S10 fuse block. It's a bit like playing a memory game. Find the matching circuit on the S10 fuse block connector and connect the Silverado wire into it.Has anyone rewired the stocks Silverado engine harness to work in a s10 or used stock harness/ fuse block in a s10.
Silverado engine harness is the best choice if you're doing the wiring yourself. Everything else is best from the S10. The engine harness merges quite well with the ~2000+ S10 because they were designed with very similar electrical and controls architecture. If the engine harness is done right you don't have to touch any other wiring.Would it be easier to use the Silverado engine harness, fuse block, cab harness, bcm?
Google "sloppy stage 2". It seems to work well with almost any style of LS build and is a very affordable option. With the right knowledge and probably dollars you can eek out some more for a certain style build, but hard to beat it's price and versatility.What is the best cam to run, stock, 5.3/5.7/6.0/6.2/after market? The steam valve, many people tap the water pump, anyone tap the radiator? Or have a better way? That's all for now.
Dang. That's not what I wanted to hear.In terms of the learning experience, swaps are a lot of fun. In terms of performance improvement expect to be disappointed when you're finished.
Engines produce power according to air & fuel provided, and the volumetric/thermal efficiencies they operate at. However they're just air pumps. Ultimately you've got a pump displacing 4.3 L of volume per cycle, versus one displacing 4.8 L. So you're adding 0.5 of a L of total displacement. The VE/TE of the LS platform is better than the SBC for a bunch of small reasons.Dang. That's not what I wanted to hear.
Above you stated that a TBSS converter was an improvement over an S10. Can you elaborate a little, it might be worth me rounding one up. Will the converter have an ID stamped on it?Any LS 5.3 and up is great in an S10 With a decent wake-up cam. Stock cams in all the truck motors suck and leave a lot to be desired.
I'm running All 3" on my 5.3.. Custom 3" y-pipe from the headers to a merge and single 3" all the way to the rear, behind the spring.I will be using this post for just questions. I got a 2001 4.8l I'm throwing in a 2003 bagged single cab 2.2 Sonoma. On the exhaust does 2.5 "from headers to 3" sound good? Looking at using the stock Silverado cats with a quiet thrush single in to single out muffler with a side exit exhaust before rear tire.
Ehhhh go with the Suburban transmission... the S10 is supposedly weaker...something about smaller diameter parts I dunno.... but I do know any transmission that isn't behind a LS engine will require a spacer for the TCSecond question on the transmission, what is the best transmission/torque converter to run? I will be getting truck tuned. I have access to a 2003 suburban tranny and 1998 s10 tranny. I have also read the s10 torque converter is better to run. I'm not rebuilding the motor (200k+) going to run it till it blows, then upgrade to 5.3/7 or rebuild.
I did.. Originally I used the Silverado Fuse block, then switched the a 6 fuse block and now I have it all run into the original fuse block in the truck...for a '03 I THINK you can just repin the C2 connector and plug it into the factory block in the S10.Has anyone rewired the stocks Silverado engine harness to work in a s10 or used stock harness/ fuse block in a s10. If so pm me. Would it be easier to use the Silverado engine harness, fuse block, cab harness, bcm? ( I have access to all the wiring from a 2001 Silverado.) I have been thinking about just pulling all wiring and using all the wiring from the Silverado. I will pull all tape and loom off and re route it.
I'm using an adapter from JTR that has an air bleed and Nipple for the steam vent. splices inline with the top radiator hose.The steam valve, many people tap the water pump, anyone tap the radiator? Or have a better way?