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02-20-2011, 11:19 PM | #1 |
Always a work in progress
Join Date: Jun 2007
Location: Harker Heights, TX
Posts: 1,599
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Help with transmission
I need help deciding on a transmission for my LQ4/9 swap. I am going to abandon the idea of a mostly strip truck to more of a street truck that I can drive to and from the strip but still lay down some decent times. I am turning my 85 into a 73(Cab, front end. Need cab for the title) and also swapping in either a LQ4 or 9 depending on what I find. The motor will have a custom spec cam, intake, tb, and other bolt-ons to help w/performance. I have a th350 but that will hurt gas mileage. I want to have a transmission built to hold 500-600 ft/lbs even though I probably won't make that much. I want to have it built right and be able to handle the abuse of the strip with drag radials but still provide decent street manners. Is the 4l80e the only/best option? Who do you reccomend for building/rebuilding one? Who makes a good torque converter?
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USMC Retired Never trust a man who can't laugh at his own fart! 2010 Silverado Crew Cab 73 SWB 5.3/4l80e Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=695168 |
02-21-2011, 04:02 AM | #2 |
69' Chevy Stepside
Join Date: Mar 2008
Location: Anchorage, Ak
Posts: 526
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Re: Help with transmission
I would definitely say that the 4L80E would be a very good choice to hold lots of power but its not your only option, I have heard of some 4L60E's/65e's that have been built holding up to power very good as well.
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-Matthew -69' Chevy Custom/10 Shortbed Stepside 2WD "Copperhead" - Restored, 6.0L LQ9 Built. L92 Heads and LS3 Intake with Comp Cam 223/231 .610/.617 112 LSA, 4L60E with Shift Kit and Circle-D 3200 Stall Converter ~Build Thread -1957 Chevy BelAir 2 Door Post Sedan, Full Frame off Restoration done myself - 6.0L with T56 six speed -1957 Chevy BelAir 2 Door Post Sedan - Nearly rust free AK car, Project in the waiting -2003' Chevy Silverado SS AWD 6.0L! - Daily Driver |
02-21-2011, 11:15 AM | #3 |
meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: Help with transmission
4l80e is the beefiest you can get for a standard OD trans. I guess you could also consider a Gearvendors OD but they aren't cheap. A 4l60e to hold 5-600 lb/ft will have to be fairly well built up, but I still question the dependability at that power level.
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
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