LS swap manifolds/headers - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Wscott9689 · 10-04-2011, 05:09 PM

been doing a little research on manifolds or headers that are not so expensive. im planning on either a 5.3 or 6.0 for my bagged 68 2wd. also which mounts? can you use the truck manifolds if you modify stock towers or use the ECE or POL mounts? any alternative headers that will fit with little or no modifications? long tubes will be ok as long as they will not be below the frame rails. thanks for the help!!

RocketKing · 10-04-2011, 05:24 PM

TBSS (TrailBlazer SuperSport) manifolds will fit with nearly any motor mount. Headers are more tricky, Doug Thorley headers are made specifically for our trucks with an LS swap but several folks on here have been able to use different headers than DT's but there are only a few alternatives. There are a couple great threads in here somewhere about this.

Wscott9689 · 10-04-2011, 06:02 PM

and ill be using a 4l80e also.

usmcchevy · 10-04-2011, 09:53 PM

TBSS manifolds here. For the 80e you need to trim about 3/4" off the drivers side trans "wing".

Shon · 10-05-2011, 09:56 AM

I have the big tube LSx Doug Thorley Headers in stock ready to roll out! These will fit just about any motor mount set up that is out there.

BR3W CITY · 10-05-2011, 04:40 PM

I also run TBSS manifolds, and had to trim the ear the same as USM.
The DT's are the only header I know that fits, although I'm not sure how low down they hang.

Shon · 10-05-2011, 04:45 PM

Quote:

Originally Posted by BR3W CITY

The DT's are the only header I know that fits, although I'm not sure how low down they hang.

Not below frame

10-04-2011, 05:09 PM	#1
Wscott9689 Registered User Join Date: Jul 2011 Location: Tupelo, ms Posts: 86	LS swap manifolds/headers been doing a little research on manifolds or headers that are not so expensive. im planning on either a 5.3 or 6.0 for my bagged 68 2wd. also which mounts? can you use the truck manifolds if you modify stock towers or use the ECE or POL mounts? any alternative headers that will fit with little or no modifications? long tubes will be ok as long as they will not be below the frame rails. thanks for the help!!

10-04-2011, 05:24 PM	#2
RocketKing Registered User Join Date: Dec 2008 Location: Berryville, AR Posts: 792	Re: LS swap manifolds/headers TBSS (TrailBlazer SuperSport) manifolds will fit with nearly any motor mount. Headers are more tricky, Doug Thorley headers are made specifically for our trucks with an LS swap but several folks on here have been able to use different headers than DT's but there are only a few alternatives. There are a couple great threads in here somewhere about this. __________________ Rex

10-04-2011, 06:02 PM	#3
Wscott9689 Registered User Join Date: Jul 2011 Location: Tupelo, ms Posts: 86	Re: LS swap manifolds/headers and ill be using a 4l80e also.

10-04-2011, 09:53 PM	#4
usmcchevy Has more rust than truck... Join Date: Apr 2005 Location: Ivanhoe, MN Posts: 2,421	Re: LS swap manifolds/headers TBSS manifolds here. For the 80e you need to trim about 3/4" off the drivers side trans "wing". __________________ 1972 Custom/10 SWB, 4.8/4l80e Build thread LSx Swap FAQ index

10-05-2011, 09:56 AM	#5
Shon Registered User Join Date: Sep 2005 Location: sc Posts: 1,203	Re: LS swap manifolds/headers I have the big tube LSx Doug Thorley Headers in stock ready to roll out! These will fit just about any motor mount set up that is out there. __________________ 71 Cheyenne C10 LWB cam'd 6.0/T56 Swap

10-05-2011, 04:40 PM	#6
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: LS swap manifolds/headers I also run TBSS manifolds, and had to trim the ear the same as USM. The DT's are the only header I know that fits, although I'm not sure how low down they hang. __________________ *'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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