Thoughts on Doug Thorley heads from my 70 4x4

[Patsfan34]

I came across someone selling a nice set of Doug Thorley 372Y chrome headers. Is anyone aware of any fitment issues on a 70 Chevy K-10? If I upgrade to Vortec heads will these still bolt right on? Any other feedback on these headers would be appreciated. Thanks

EDIT: In the title I wrote heads but meant headers! My bad

[Patsfan34]

Looks like I'll take a chance then!

[Burt4x4]

Here is what google found

Part Number: THY-372Y
Product Name: 1967-1972 TRUCK/SUBURBAN, 283-400, 2/4WD

Description:
It's a proven, indisputable fact: Dollar for dollar, no other investment will increase power and performance like a set of Doug Thorley Headers!
List Price: $731.00

Features

PRIMARY/COLLECTOR: 1 5/8" - 2 1/2"
DRIVE: 2WD & 4WD
Notes
13 - May require Air Conditioning Bracket.
2 - Will fit angle plug heads.
12 - May require Alternator/Generator Bracket.

Look at that List price WOW!
I never ran this part # before but I have Thorleys on my 454

[Patsfan34]

Thanks Burt. I was just hoping someone had put them on there SWB 4x4 and there were no fitment issues. Looks like I'll be the one with feedback on this topic. Glad to hear you have them on your 454, that makes me feel a little better!

[Burt4x4]

Great header for low end torque but keep inmind the Tri-Y design is not intended to be use in high RPM applications. Just a FYI.
Good Luck
Burt

[sakohntr]

I have not used this particular header but the other 2 sets of Dougs I've owned have kicked ass for fit and not leaking. And use those Byson gaskets he sells with em!

[Patsfan34]

Thanks sako. The only thing I need are the header gaskets so I'm glad you made the suggestion.

[gcsupraman]

Originally Posted by Patsfan34

I came across someone selling a nice set of Doug Thorley 372Y chrome headers. Is anyone aware of any fitment issues on a 70 Chevy K-10? If I upgrade to Vortec heads will these still bolt right on? Any other feedback on these headers would be appreciated. Thanks

EDIT: In the title I wrote heads but meant headers! My bad

I just had a set put on two weeks ago. The passenger side hit the rear spring mount. I contacted Doug Thorley and they recommended putting a huge bar into the collector and the headers could be "adjusted" up to 3/4". After the adjustment the headers fit fine....if you are going to get a custom exhaust made please let me know I can recommend a place in Danbury that does excellent work and can show you my truck if you want to inspect it.

-Greg

[Patsfan34]

Awesome, thanks alot Greg!