Thorley LS Swap Headers Q

[jamesjones]

Is anybody who has these able to give the dimensions of the headers? I'm looking for some headers for my swap but space is super tight. The engine in my '72 blazer was orginally mounted in the rear most location and I have some custom made engine mounts. I'd like to have a decent idea about them fitting before I drop the coin on them.

I'll snap some pics when I get home to give an idea of the space I'm working with.

[chevyguy_72]

So your engine is still in the rear mount location or its moved forward?

[jamesjones]

Originally Posted by chevyguy_72

So your engine is still in the rear mount location or its moved forward?

It's still in the rear mount position. I meant I say the old engine was mounted in that position so the new mounts are based on that position.

[chevyguy_72]

ok... mine is mounted in the rear holes now... and the DT headers fit fine... but you also have to consider the perches and mounts you are using... i currently have CPP sheetmetal perches with dirty dingo slider mounts...
as seen here:
http://67-72chevytrucks.com/vboard/s...8&postcount=14

[jamesjones]

Here's pics of the space I have on the driver's side...

[jamesjones]

Here's the space I have on the passenger's side...

[truckdude239]

Trailblazer ss manifolds eould probely clear

[jamesjones]

Originally Posted by truckdude239

Trailblazer ss manifolds eould probely clear

Yeah, after taking a closer look at those manifolds and the space I have to work with, I honestly think that's my best option. I'm gong to order a set and if they work, I'll just get them ceramic coated and call it a day.

[truckdude239]

I used them on my 71 clered great and i coukd use the stock downpipes. Also i only had 140 buxs in manifolds instead of 700 for swap headers

[Hart_Rod]

2010+ Camaro manifolds shoul work.

[jamesjones]

Originally Posted by Hart_Rod

2010+ Camaro manifolds shoul work.

Do those flow better than the TBSS manifolds?

[Hart_Rod]

There are some pictures in my shifted thread.

[jamesjones]

Well, I decided it wasn't worth the $600 risk for the DTs to not fit and bought a set of 2010 Camaro manifolds off of ebay.

[66LSx]

FOR OTHER MEMBERS WHO SEARCH UPON THIS

You need to check to see WHAT DT header you are using..

322 (60-66) and 323 (67-72) headers exit with a downward angle towards the ground.

These are both 1-7/8 primaries


324 exits straight out... slightly longer... and is only 1-5/8" primaries.


I have Doug Throley 324 headers in my 66 (although there made fora 67-72)









Differences between LS swap c-10 headers

322 & 323





They fit with alot of room in my 1966 c10... you should have all the room in the world for your 67-72..even at the firewall... but your REALLY far back there...

[jamesjones]

Yeah, the more I looked at pictures of them installed and compared them to the placement of my engine, I just don't see them fitting, I think the Camaro manifolds are going to be a tight fit. I just want to get it up and running and then I'll have some custom headers made down the line.

[66LSx]

Originally Posted by jamesjones

Yeah, the more I looked at pictures of them installed and compared them to the placement of my engine, I just don't see them fitting, I think the Camaro manifolds are going to be a tight fit. I just want to get it up and running and then I'll have some custom headers made down the line.

The more and more I look at your picture..... the more I think cylinder #6 would hit.... this is the passenger side tube that goes up and over #8... i think it would come down and smack the lower corner of the doghouse.

[akdg87]

I did an install on a 70 k10(with motor slid back as far as possible) and the issue I ran into with the Doug Thorleys was the o2 sensor bung placement on the passenger side. It was angled at the frame rail and there was no way possible to install it.

[jamesjones]

Here's the 2010 Camaro manifolds for those interested...

[jamesjones]

Here's the fitment on the passenger's side...

[jamesjones]

Here's the fitment on the driver's side...







I'm going to need to take a sledge hammer to the firewall to make room for the last header bolt...