Official NBS V6 to GENIII V8 swap Guide
12-23-2006, 04:53 PM
#21
the pumps are the same! Although i would recomend the Walbro swap.
Its too easy and cheap not too just replace the pump. It would add an additional hour to the swap time.
Summit- P/N : SUM-250103
This is a Walbro Pump
Its too easy and cheap not too just replace the pump. It would add an additional hour to the swap time.
Summit- P/N : SUM-250103
This is a Walbro Pump
Last edited by DLH2006; 12-24-2006 at 10:37 PM.
04-10-2007, 12:00 AM
#22
great info
Not trying to hyjack this thread but i find that a great read as i am doing a simular swap except i have the 4.8 to 6.0 liter swap, also i am a mechanic
buy trade but have little experiance with the genIII- IV line of powerplants getting to the point i have a plug on new GM parts and want to do what car craft did with there 6.0 but i have a 03 silverado and dont wish to stray away
from the factory EFI. L92 heads is the next move but im not sure what to do about the intake yet as i dont think its plug and play (correct me if im wrong)
once again thanks for the info and this is a great board any info is appreciated, Frank
buy trade but have little experiance with the genIII- IV line of powerplants getting to the point i have a plug on new GM parts and want to do what car craft did with there 6.0 but i have a 03 silverado and dont wish to stray away
from the factory EFI. L92 heads is the next move but im not sure what to do about the intake yet as i dont think its plug and play (correct me if im wrong)
once again thanks for the info and this is a great board any info is appreciated, Frank
04-10-2007, 12:04 AM
#23
Originally Posted by beastolds455
Not trying to hyjack this thread but i find that a great read as i am doing a simular swap except i have the 4.8 to 6.0 liter swap, also i am a mechanic
buy trade but have little experiance with the genIII- IV line of powerplants getting to the point i have a plug on new GM parts and want to do what car craft did with there 6.0 but i have a 03 silverado and dont wish to stray away
from the factory EFI. L92 heads is the next move but im not sure what to do about the intake yet as i dont think its plug and play (correct me if im wrong)
once again thanks for the info and this is a great board any info is appreciated, Frank
buy trade but have little experiance with the genIII- IV line of powerplants getting to the point i have a plug on new GM parts and want to do what car craft did with there 6.0 but i have a 03 silverado and dont wish to stray away
from the factory EFI. L92 heads is the next move but im not sure what to do about the intake yet as i dont think its plug and play (correct me if im wrong)
once again thanks for the info and this is a great board any info is appreciated, Frank
05-01-2007, 03:23 PM
#26
Originally Posted by DLH2006
Motor mounts: unfortunately the stock mounts will not work. You will need to purchase 99-03 ½ ton frame mounts and engine mounts, you can get these at your local chevy dealer or find them from a salvage yard.
What about your K member, cross member?
Did you have to swap that out, or notch it?
02-14-2008, 02:13 PM
#30
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great thread, wish it was the first one that came up when i did my search! anyway couple questions...
ecu - if you got a motor, harness, and ecu from a v8 truck can you use the v8 ecu. im not looking to get any more right now than just a stock v8 (yup manifolds and all) so i dont need a custom tune or anything.
acc bracket - bolts up to the v8? ps pump and alt can stay same locations? dont have to touch wiring or ps hoses or anything? thats what i had assumed but wanted to double check.
flexplate - you just need to make sure the flexplate is the "bell" shaped one that sticks out (like an ls1)?
manifolds - if i do use the stock manifolds to get going, will they match up to the stock y pipe?
year motor - our truck is a 4.3 rwd ext cab 2001 so im looking for a 99-02 engine? i know about the dbw part, but does the harness ecm etc change after 02? or if i get an 03 later motor harness ecu could i just change to an older ls1/ls2 intake with a cable throttle body?
thanks for any help you can give! ! This truck is a daily driver, unlike the syclone which is getting a build 6.0 and im using fast xfi, turbo, etc. I want her truck to be just like it is now, she gets in, turns the key, and goes to work and back just like its the stock 4.3 (just sounds better and has more umphfffffff!)
ecu - if you got a motor, harness, and ecu from a v8 truck can you use the v8 ecu. im not looking to get any more right now than just a stock v8 (yup manifolds and all) so i dont need a custom tune or anything.
acc bracket - bolts up to the v8? ps pump and alt can stay same locations? dont have to touch wiring or ps hoses or anything? thats what i had assumed but wanted to double check.
flexplate - you just need to make sure the flexplate is the "bell" shaped one that sticks out (like an ls1)?
manifolds - if i do use the stock manifolds to get going, will they match up to the stock y pipe?
year motor - our truck is a 4.3 rwd ext cab 2001 so im looking for a 99-02 engine? i know about the dbw part, but does the harness ecm etc change after 02? or if i get an 03 later motor harness ecu could i just change to an older ls1/ls2 intake with a cable throttle body?
thanks for any help you can give! ! This truck is a daily driver, unlike the syclone which is getting a build 6.0 and im using fast xfi, turbo, etc. I want her truck to be just like it is now, she gets in, turns the key, and goes to work and back just like its the stock 4.3 (just sounds better and has more umphfffffff!)