I feel like the 100 series has SO much more room than the 120 (GX470)! Plus flanges off the manifold before the first cats! NICE.. In the GX you have to cut the cats off and weld them to the DT shorties... or go long tube and delete 1st cats (not the way I went...I went shorties). I'm half way through my install right now; a week in but only part time wrenching a couple hours at a time. I was able to keep ALL studs in the block, but I think I need to remove some driver side studs to get the Thorley in. Pass side I was able to dry fit the header in. I'll remove the motor mounts again next and see if I can shimmey the driver side in that way (good tip, thx!). And the double nut to pull out the rail studs is another great tip! I like the idea of hoising the block one side at a time, that might afford a scosh more room for the driver's side. I'm hooked up to both hooks on the block right now. Sweet tips, man!! keep on keepin' on!!!
also forgot to ask how did you know you had a leak ? Shop is telling me I dont but the muffler place said i did( they dont do these repairs so not sure why they would lie)?
do they pipes that stick out toward some of the rubber hoses came a problem with the excess heat created by headers ? Trying to decide whether to do OEM VS thorley 2005 with 300,000, great video
Thanks man. Your tips will really really help someone in the future! Thanks for filming this epic process.
Awesome how to video! Thanks 👍🏻
I feel like the 100 series has SO much more room than the 120 (GX470)! Plus flanges off the manifold before the first cats! NICE.. In the GX you have to cut the cats off and weld them to the DT shorties... or go long tube and delete 1st cats (not the way I went...I went shorties).
I'm half way through my install right now; a week in but only part time wrenching a couple hours at a time.
I was able to keep ALL studs in the block, but I think I need to remove some driver side studs to get the Thorley in. Pass side I was able to dry fit the header in.
I'll remove the motor mounts again next and see if I can shimmey the driver side in that way (good tip, thx!).
And the double nut to pull out the rail studs is another great tip!
I like the idea of hoising the block one side at a time, that might afford a scosh more room for the driver's side. I'm hooked up to both hooks on the block right now.
Sweet tips, man!!
keep on keepin' on!!!
Thanks! And good luck. What a process.
The process to get these in is the only reason I haven't done the swap.
It’s wayyyy more work than it should be.
Nice headers though!
I worked for Toyota to. For 9 years. After market parts on them can be a pain.
I guess that over engineering makes it a PTA. Small block chevy headers are almost a joke how easy they would be to install.
also forgot to ask how did you know you had a leak ? Shop is telling me I dont but the muffler place said i did( they dont do these repairs so not sure why they would lie)?
Went through with a stethoscope!
Might be worth asking the place if they can show you.
do they pipes that stick out toward some of the rubber hoses came a problem with the excess heat created by headers ? Trying to decide whether to do OEM VS thorley 2005 with 300,000, great video
Good question. Haven’t noticed anything but haven’t checked will try to do so in the near future