4L60E - What trans do I have here?
03-05-2011, 06:57 PM
#1
4L60E - What trans do I have here? Picked this up cheap to go behind a 5.3 for my 67 - I am guessing it's from a 4.3 - Any input on wether this is correct or not?
It bolts up but it looks like it has the bolt pattern similar to the SBC - Basically missing 1 bolt on the upper right - I have read that this is not a problem. Just trying to verify what I have here. the bellhousing has 24206579 cast into it by the starter buldge if that helps - Supposed to be a 2001 Silverado but not sure. Will this work behind my 5.3?
LK
It bolts up but it looks like it has the bolt pattern similar to the SBC - Basically missing 1 bolt on the upper right - I have read that this is not a problem. Just trying to verify what I have here. the bellhousing has 24206579 cast into it by the starter buldge if that helps - Supposed to be a 2001 Silverado but not sure. Will this work behind my 5.3?
LK
Last edited by Alwhite00; 03-05-2011 at 07:14 PM.
03-06-2011, 07:14 AM
#5
Not all removable bell housing 4L60E's are from Gen III engines, they are merely the newer than 1997 casting. All the "new" castings use six bolts on the tail shaft as well.
No you don't have to change the bell housing, people loosely use "LS" when they mean Gen III, IV engine. The "proper" family description is Gen III or Gen IV as LS is denoting a specific engine within the Gen III family. Lots of egay sellers do this. 
Example: LS1, LS6, LS7 are all Gen III 5.7 liter engines. On the contrary LM7, LQ9, L30, etc. are also Gen III engines but LM7 is an iron block 5.3, LQ9 is a 6.0 and L30 is a 5.3 - all are truck engines and interchange many parts with the previously mentioned "LS" engines. Most important in your case is the transmission.
One thing to note. If the holes in the converter you got with the transmission don't completely line up with the holes on the flexplate, you have a V6 version and will need a spacer to make the snout longer like a Gen I, II engine. The internals are the same so no worries there.
Example: LS1, LS6, LS7 are all Gen III 5.7 liter engines. On the contrary LM7, LQ9, L30, etc. are also Gen III engines but LM7 is an iron block 5.3, LQ9 is a 6.0 and L30 is a 5.3 - all are truck engines and interchange many parts with the previously mentioned "LS" engines. Most important in your case is the transmission.
One thing to note. If the holes in the converter you got with the transmission don't completely line up with the holes on the flexplate, you have a V6 version and will need a spacer to make the snout longer like a Gen I, II engine. The internals are the same so no worries there.
03-06-2011, 08:23 AM
#6
Not all removable bell housing 4L60E's are from Gen III engines, they are merely the newer than 1997 casting. All the "new" castings use six bolts on the tail shaft as well.
No you don't have to change the bell housing, people loosely use "LS" when they mean Gen III, IV engine. The "proper" family description is Gen III or Gen IV as LS is denoting a specific engine within the Gen III family. Lots of egay sellers do this.
Example: LS1, LS6, LS7 are all Gen III 5.7 liter engines. On the contrary LM7, LQ9, L30, etc. are also Gen III engines but LM7 is an iron block 5.3, LQ9 is a 6.0 and L30 is a 5.3 - all are truck engines and interchange many parts with the previously mentioned "LS" engines. Most important in your case is the transmission.
One thing to note. If the holes in the converter you got with the transmission don't completely line up with the holes on the flexplate, you have a V6 version and will need a spacer to make the snout longer like a Gen I, II engine. The internals are the same so no worries there.
No you don't have to change the bell housing, people loosely use "LS" when they mean Gen III, IV engine. The "proper" family description is Gen III or Gen IV as LS is denoting a specific engine within the Gen III family. Lots of egay sellers do this.
Example: LS1, LS6, LS7 are all Gen III 5.7 liter engines. On the contrary LM7, LQ9, L30, etc. are also Gen III engines but LM7 is an iron block 5.3, LQ9 is a 6.0 and L30 is a 5.3 - all are truck engines and interchange many parts with the previously mentioned "LS" engines. Most important in your case is the transmission.
One thing to note. If the holes in the converter you got with the transmission don't completely line up with the holes on the flexplate, you have a V6 version and will need a spacer to make the snout longer like a Gen I, II engine. The internals are the same so no worries there.
LK
