700r4 Trans with an LQ4? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gunrunner95 · 02-19-2015, 03:16 PM

Okay so I have an 89 Silverado with a stock 350 and a 700r4. I'm wanting to do the LQ4 swap this summer hopefully so I'm doing research on it. My transmission was rebuilt back in November and has less than 1000miles on it so I'm hoping to use it, I know its possible to the old style of transmissions but I'm not clear what all is necessary/what kinds of issues may arise. Correct me If I'm wrong but most LS motors have a slightly shorter crank than SBC which requires a special adapter to use the old style trans like the 700r4. But the LQ4 is rather unique in the fact that the crank is longer so an adapter is not needed.
Any help is greatly appreciated Thank you.

MalibuSSwagon · 02-19-2015, 05:29 PM

Do you already have a LQ4? the 01+ ones should come with the crank spacer and flexplate you'd need to use already

gunrunner95 · 02-19-2015, 05:31 PM

I do not have an LQ4 yet. That's good to know thank you

BR3W CITY · 02-19-2015, 06:15 PM

I'm just gonna say this, because someone is bound to, so it might as well be me;

You will smoke that 700r4. A cammed 6.0 will burn through that trans in a season if you like to ever get hard on the thing. Even with the proper TV cable bracket, I just don't trust the 700r4. I burned one up with a sub 300hp 355.
The 4l60e isn't the strongest thing behind a 6L, and the 700r4 was that, minus a computer and a few better internals.

I'm not saying it won't work, but I am saying that its life will be terminal.

gunrunner95 · 02-19-2015, 06:20 PM

Br3w City- Thank you. I suppose I'll have to do some more research into this. I appreciate it

Wasted Income · 02-19-2015, 07:20 PM

I'm with Brew. Sell it to someone on CL while it still works, and put that money toward a 60/80e....with the strong nod to the 80.

gunrunner95 · 02-19-2015, 07:51 PM

Alright, Thanks guys

85burb · 02-21-2015, 11:04 PM

I have a burb with a cammed lq4 and a 700r4. Mine is supposed to be built for 450 hp. It has lived for 3-4 years and only thing I have killed is my first lock up converter. But I am waiting for the day it fails. I am with everyone and wish I put a 4l80 in. I get a little nervous every time I get on it. I just know 4th will give out one day going up the hill to my work.

02-19-2015, 03:16 PM	#1
gunrunner95 Registered User Join Date: Jul 2013 Location: Ponca City (North Central) Oklahoma Posts: 60	700r4 Trans with an LQ4? Okay so I have an 89 Silverado with a stock 350 and a 700r4. I'm wanting to do the LQ4 swap this summer hopefully so I'm doing research on it. My transmission was rebuilt back in November and has less than 1000miles on it so I'm hoping to use it, I know its possible to the old style of transmissions but I'm not clear what all is necessary/what kinds of issues may arise. Correct me If I'm wrong but most LS motors have a slightly shorter crank than SBC which requires a special adapter to use the old style trans like the 700r4. But the LQ4 is rather unique in the fact that the crank is longer so an adapter is not needed. Any help is greatly appreciated Thank you. __________________ 1972 Chevy C-10 1/2 ton longbed project 1989 Chevy 1/2 ton shortbed "If a man does his best, what else is there?" "A pint of sweat saves a gallon of blood"-George Patton

02-19-2015, 05:29 PM	#2
MalibuSSwagon Registered User Join Date: Sep 2009 Location: Weare,NH Posts: 1,589	Re: 700r4 Trans with an LQ4? Do you already have a LQ4? the 01+ ones should come with the crank spacer and flexplate you'd need to use already __________________ Eric 1992 Oldsmobile Custom Cruiser 1986 Chevrolet C10\|5.3L\|TKO600\|Shortbed\|Custom Deluxe 1983 Malibu Wagon\|TPI 305\|T5 5 speed\|3.73 non-posi

02-19-2015, 05:31 PM	#3
gunrunner95 Registered User Join Date: Jul 2013 Location: Ponca City (North Central) Oklahoma Posts: 60	Re: 700r4 Trans with an LQ4? I do not have an LQ4 yet. That's good to know thank you __________________ 1972 Chevy C-10 1/2 ton longbed project 1989 Chevy 1/2 ton shortbed "If a man does his best, what else is there?" "A pint of sweat saves a gallon of blood"-George Patton

02-19-2015, 06:15 PM	#4
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: 700r4 Trans with an LQ4? I'm just gonna say this, because someone is bound to, so it might as well be me; You will smoke that 700r4. A cammed 6.0 will burn through that trans in a season if you like to ever get hard on the thing. Even with the proper TV cable bracket, I just don't trust the 700r4. I burned one up with a sub 300hp 355. The 4l60e isn't the strongest thing behind a 6L, and the 700r4 was that, minus a computer and a few better internals. I'm not saying it won't work, but I am saying that its life will be terminal. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

02-19-2015, 06:20 PM	#5
gunrunner95 Registered User Join Date: Jul 2013 Location: Ponca City (North Central) Oklahoma Posts: 60	Re: 700r4 Trans with an LQ4? Br3w City- Thank you. I suppose I'll have to do some more research into this. I appreciate it __________________ 1972 Chevy C-10 1/2 ton longbed project 1989 Chevy 1/2 ton shortbed "If a man does his best, what else is there?" "A pint of sweat saves a gallon of blood"-George Patton

02-19-2015, 07:20 PM	#6
Wasted Income Boosted Member Join Date: May 2002 Location: Mackinaw, IL Posts: 2,200	Re: 700r4 Trans with an LQ4? I'm with Brew. Sell it to someone on CL while it still works, and put that money toward a 60/80e....with the strong nod to the 80. __________________ 1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq 1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift 1964 Buick Skylark Twin TURBO 383 LS pro-touring project 2014 VW Passat TDI - Daily Driver Turbo diesel 2015 Sierra Denali HD Duramax Turbo diesel 2016 Ford Explorer Sport - Twin Turbskis 2017 Polaris RZR Turbo 2014 Nor-Tech Center Console - Twin Supercharged Outboards *TURBO ALL THE THINGS!!*

02-19-2015, 07:51 PM	#7
gunrunner95 Registered User Join Date: Jul 2013 Location: Ponca City (North Central) Oklahoma Posts: 60	Re: 700r4 Trans with an LQ4? Alright, Thanks guys __________________ 1972 Chevy C-10 1/2 ton longbed project 1989 Chevy 1/2 ton shortbed "If a man does his best, what else is there?" "A pint of sweat saves a gallon of blood"-George Patton

02-21-2015, 11:04 PM	#8
85burb Registered User Join Date: Dec 2009 Location: lindale,tx Posts: 2,373	Re: 700r4 Trans with an LQ4? I have a burb with a cammed lq4 and a 700r4. Mine is supposed to be built for 450 hp. It has lived for 3-4 years and only thing I have killed is my first lock up converter. But I am waiting for the day it fails. I am with everyone and wish I put a 4l80 in. I get a little nervous every time I get on it. I just know 4th will give out one day going up the hill to my work. __________________ 82 c10 5.3/4l60 84 c20 5.3/sm465 85 chevy k10 suburban LQ4/4l60 91 chevy c10 suburban Lsa 5.3/4l60 2017 Silverado whipple 5.3 1964 Vw beetle 1974 vw beetle



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