Conversions & Hybrids - 4.8l fleplate problems please help!




racergrn
11-30-2009, 10:46 PM
Can someone please help me?:bang: I recently bought a 2000 1500 silverado with the 4.8l with a manual transmission, the manual tranny is going and is being replaced with a 4l60E the problem im having is this motor seems to have the wide crank flange and the standard dished flexplate will not work :bang: what do i need? can i use a 6.0 flat flexplate from a 99? anything else i should be aware?

thanks in advance


RNation0001
12-01-2009, 12:30 AM
i believe what u need is a flexplate spacer or another flexplate. where did you get the flexplate when you took the manual tranny out?

racergrn
12-01-2009, 08:44 AM
flexplate was pulled from an 2000 5.3 problem im having is the flexplate contacts the starter cone


Bo185
12-01-2009, 08:52 AM
Can someone please help me?:bang: I recently bought a 2000 1500 silverado with the 4.8l with a manual transmission, the manual tranny is going and is being replaced with a 4l60E the problem im having is this motor seems to have the wide crank flange and the standard dished flexplate will not work :bang: what do i need? can i use a 6.0 flat flexplate from a 99? anything else i should be aware?

thanks in advanceYou need the flat flex plate an the earlier style converter. As the Gen III converter has a nub near the crank that will hit the longer crank.

forcd ind
12-01-2009, 10:29 AM
if the crank does have the extended rear, and not a spacer, you would need a flat flywheel, and prob have a converter made with a shorter snout to work-the 4l60e converters had a longer snout in a pass car, not sure exactly what they did in a truck that orig had a longer crank, maybe a diff converter?

racergrn
12-01-2009, 10:55 AM
so i need the earlier 4l60 or 700r convertor? but what year of flex plate would i need? sorry for the ignorant questions

Bo185
12-01-2009, 11:53 AM
if the crank does have the extended rear, and not a spacer, you would need a flat flywheel, and prob have a converter made with a shorter snout to work-the 4l60e converters had a longer snout in a pass car, not sure exactly what they did in a truck that orig had a longer crank, maybe a diff converter?The trucks with the longer crank had the 4l80 in them it had the correct converter. Yes the 4.8l was used with the 4l80 in the Vans. Also the longer crank was used with the NV3500 and NV4500 manual trans as well.

Any flat 6.0l flex plate will work and you won't need the spacer as well.

You will need the earlier 4l60e converter (1997-1999) Gen I or a 4.3L converter.

racergrn
12-01-2009, 05:53 PM
wow what a relief! thank you i thought this build was going to be placed on hold