LS1 bolt pattern
#12
Check out this controller. Should give you the best of both worlds, for just a little more than a manual valve body.
TCI Auto 302820 - TCI EZ-TCU Automatic Transmission Controllers - Overview - SummitRacing.com
TCI Auto 302820 - TCI EZ-TCU Automatic Transmission Controllers - Overview - SummitRacing.com
#14
Start a post in the 1st gen forum, or you wont see many answers in somebody else's post about tranny.
#15
The LS motors have an extra bolt at the top of the bell housing that the sbc doesn't have. From research it isn't needed. There have been many 4L60s and 80s swapped into older cars so I'm sure there's spacers or custom torque converters available. I'm debating on the same thing. I have 3.73s and would like a good OD trans for highway driving.
From looking at bellhousings for sale it appeared that the LS1 had the same dowell pins, with bolts above and below the pins, then just a center bolt at top middle. The SBC and BBC have a total of 6 bolts with the same dowell pin and bolts above and below, but one more on each side.
Here's an LS1 bellhousing:
Quick Time RM-6036 Chevy LS1 Engine Richmond Style Transmission Jerico
And a SBC bellhousing:
69 Camaro SS 350 Corvette Chevelle Nova Bellhousing 327 | eBay
So what am I missing here that I can't see more than 5 mounting bolt holes for the LS1? If it's just the dowell pin and 4 bolt I wont trust them. Doesn't appear to be enough to me. Or I'll go with the earlier that matches the SBC/BBC pattern.
Last edited by 1971BB427; 01-14-2012 at 04:51 PM.
#17
yeah val according to ls1 tech only 4 bolt holes match up,thats why i decided against the ls1 4l80e too,with the horsepower im putting out i dont trust it,easier just to use the earlier one then no spacers or custom torque converter is needed.
#19
I like the automatic/manual adjust-ability option of the controller. Not to mention, if you set it up with a manual valve body, you still need to wire a switch for the torque converter lockup. Leaving the t.c. unlocked is not an option.
I've been wanting to put a built up 700R4/4L60 in my car, but now I'm getting more convinced that the 4L80E with the controller would be the slick way to go.
Last edited by Camaro 69; 01-15-2012 at 01:34 AM.