Stock Manifold Options for LS Swaps

[solidaxel]

Thanks guys, all good info for making a "right" decision!!
5.3 2006 going into my "new" 78 Silverado

[solidaxel]

Originally Posted by MAK191

I'm using TBSS manifolds with dirty dingo adjustable 73+ mounts with the matching stands and rubber. They fit great with zero issues, they are not even close to the mounts or stands. I did notice the part numbers cast on mine are 12567483(LT) & 12567484(RT). Not sure what the difference is.

I just received my Dirty Dingo motor mounts and compressor mount, but no instructions for the bag of bolts!
Could you show me a pic of the compressor mounted and the idler?

Thanks

[mcmlxix]

Originally Posted by mcmlxix

I unded up using the Camaro 2 bolt manifolds but I had the local waterjust guy cut two 3/8" steel flanges for a 2.5" OD exhaust pipe....

GM part number 9220232 is for a 2010 Camaro exhaust manifold collector gasket. Its a metal (looks like stainless) gasket with crush ring of what looks like the old stlye (think lead and brillo pad) material... It has the 2.5" inner diameter.

I also bought a FelPro gasket of the same design but for a 3" diameter exhaust. I may make another set of flanges with the 3" hole. I only bought them becasue I thought they were the correct ones but couldn't get the dimensions. Not cheap at $18 each so I'll see if I can make them work for a 3" exhaust....

[mrhurt73]

i went to my local napa store for the gaskets and exhaust studs and nuts.
studs and nuts are the same without the hex end on the stud.

and i did cut off the factory LM7 y-pipes and they do fit TBSS manifolds.

[83GMCK2500]

How thick are the flanges on the TBSS Manifolds at the head?

[CharlieSheen]

I tried to order a set of these online through one of the online GM parts suppliers,and after the order was processed,was told that the left hand manifold #12600526 was not available,with no date for availability.Following up,they tell me it is most likely that the left TBSS manifold has been discontinued.Being that these manifolds was used on a fairly limited amount of vehicles it is likely that GM will just sell what is left,and that will be it.The right hand and heat shields are currently available.

Dorman has an aftermarket manifold,appears to be the same,but is more than double the cost.

[cardreams]

https://www.holley.com/products/exha...arts/8501-1HKR

You guys thing these would work as we'll ?

[mcmlxix]

Originally Posted by cardreams

https://www.holley.com/products/exha...arts/8501-1HKR

You guys thing these would work as we'll ?

They seem to have the same basic profile as the 2010+ Camaro manifolds. I wouldn't spend the $400+ USD... They build Camaros in Canada.... find some take off manifolds...

[l92powered77]

my stock l92 manifold will clear passenger side of my 77 but drivers side collectors empties into my frame rail...gonna check out if i can find 2010 up camaro ss or tbss manifolds...

[mcmlxix]

Originally Posted by l92powered77

my stock l92 manifold will clear passenger side of my 77 but drivers side collectors empties into my frame rail...gonna check out if i can find 2010 up camaro ss or tbss manifolds...

http://www.ebay.com/itm/New-L99-LS3-...76cef4&vxp=mtr

Buy it now @ $159.99

[l92powered77]

Originally Posted by mcmlxix

http://www.ebay.com/itm/New-L99-LS3-...76cef4&vxp=mtr

Buy it now @ $159.99

Tempting but 40 dollar shipping! Good eye am thinking about that

[mcmlxix]

go sign up on Camaro 5 forums.. they are always selling take off manifolds.... thats where I got my sets...

[l92powered77]

Originally Posted by mcmlxix

go sign up on Camaro 5 forums.. they are always selling take off manifolds.... thats where I got my sets...

You slick devil you . Thats a great idea.

[Marty68]

i just ordered tbss manifolds from gm parts direct. 129 shipped. no indication of back order. used Camaro manifolds on ebay $135. + and i would have to get down pipes i have flanges and down pipes.

[slotard]

I'm looking at buying an 04 2500HD with 6.0/4L80E. Will the stock manifolds on it not fit my '73 C20? Can a little clearancing be done? Probably going with the Dirty Dingo sliders, no AC.

[Marty68]

Originally Posted by slotard

I'm looking at buying an 04 2500HD with 6.0/4L80E. Will the stock manifolds on it not fit my '73 C20? Can a little clearancing be done? Probably going with the Dirty Dingo sliders, no AC.

look through this thread... http://67-72chevytrucks.com/vboard/s...d.php?t=566743
most are using tbss manifolds camaro manifolds or headers. from what i understand there needs to be come frame cutting to make the stock manifolds work. they ARE wide. i dont like the idea of cutting up an original short wb frame.

[dayj1]

Originally Posted by slotard

I'm looking at buying an 04 2500HD with 6.0/4L80E. Will the stock manifolds on it not fit my '73 C20? Can a little clearancing be done? Probably going with the Dirty Dingo sliders, no AC.

It really depends on exactly where you place the engine. In my '86, I used the stock truck manifolds and only had to trim a place in the passenger's frame rail about 1/2 inch "deep".

[slotard]

1/2" is significant trim, but I suppose I could add a little reinforcement to the flange (and maybe the web too). Where did you place your engine?

[lowlyfec10]

scored some TBSS manifolds for 30 shipped! has one section of a downpipe...so i need to source another or find a flange that works

[Old_Truck_Fan]

Not sure if this is common knowledge but the 2012+ Camaro ZL1 exhaust manifolds are stainless steel versions of the common 2010+ Camaro SS manifolds. Headers are a common upgrade on ZL1s so you can usually find low mileage versions around the web.

[Marty68]

Originally Posted by lowlyfec10

scored some TBSS manifolds for 30 shipped! has one section of a downpipe...so i need to source another or find a flange that works

where? if you find a left... the new ones i ordered one was back ordered...

[Marty68]

Originally Posted by CharlieSheen

I tried to order a set of these online through one of the online GM parts suppliers,and after the order was processed,was told that the left hand manifold #12600526 was not available,with no date for availability.Following up,they tell me it is most likely that the left TBSS manifold has been discontinued.Being that these manifolds was used on a fairly limited amount of vehicles it is likely that GM will just sell what is left,and that will be it.The right hand and heat shields are currently available.

Dorman has an aftermarket manifold,appears to be the same,but is more than double the cost.

I ordered a pair from gmpartsdirect. left side back ordered. no time frame to be shipped. they said "we cant cancel whole order." I contacted another online parts seller about availability... left side back ordered from gm. I couldn't find a part number for left side dorman... so I found a Buick Ranier, cross referenced to same part number. $45 ea. however shipping may be $$
I convinced them to cancel order.

[mcmlxix]

Originally Posted by Old_Truck_Fan

Not sure if this is common knowledge but the 2012+ Camaro ZL1 exhaust manifolds are stainless steel versions of the common 2010+ Camaro SS manifolds. Headers are a common upgrade on ZL1s so you can usually find low mileage versions around the web.

I would love to upgrade to stainless steel manifolds.... anyone find a PN?

[dayj1]

Originally Posted by mcmlxix

I would love to upgrade to stainless steel manifolds.... anyone find a PN?

12622623 and 12622624 for left and right, respectively. The heat shields are 12596750 and 12611200. List price for all that is $1291.39! I think I'd just buy some headers

[Old_Truck_Fan]

Originally Posted by mcmlxix

I would love to upgrade to stainless steel manifolds.... anyone find a PN?

There is a set on ebay for $385 OBO.

http://www.ebay.com/itm/ZL1-CAMARO-S...5177fe&vxp=mtr