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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jul 2011 Posts: 9 New Guy | | New Guy Joined: Jul 2011 Posts: 9 | How much are 270 H/ large port heads worth or selling for?? Anyone purchase one recently?
Thanks
I'm no "Guy".
Love my '51 GMC 5Window, he's my man and yes, I can FIX him.
| | | | | Joined: Jan 2008 Posts: 4,962 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,962 | They are very rare. I have seen them go for $300 to $500 dollars. I don't know that they are worth that, but some people pay those kind of prices for bragging rights. | | | | | Joined: Apr 2005 Posts: 1,107 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 1,107 | for me its $100 until its been proven its not junk. | | | | | Joined: Jul 2011 Posts: 9 New Guy | | New Guy Joined: Jul 2011 Posts: 9 | So, if I have one and am thinking of selling, how would you suggest I "prove it's not junk"? If the payout is worth it I would be willing to put a little time/money into it.
I'm no "Guy".
Love my '51 GMC 5Window, he's my man and yes, I can FIX him.
| | | | | Joined: Jan 2008 Posts: 4,962 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,962 | A reputable machine shop can clean it and mag test it for cracks. These heads were very prone to cracking. As Ashton mentioned, it would probably fetch $100 as a "cat in a bag". If it is not cracked, prices I mentioned would be in order from someone who wanted one. If it is cracked, it is worth scrap iron price. The price a machine shop would charge to test it depends on the shop's reputation and prices in your area. | | | | | Joined: Jul 2011 Posts: 9 New Guy | | New Guy Joined: Jul 2011 Posts: 9 | Thanks for the info. I'll look into it.
I'm no "Guy".
Love my '51 GMC 5Window, he's my man and yes, I can FIX him.
| | | | | Joined: Dec 2008 Posts: 1,922 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 1,922 | Be sure to ask the shop to clearly and legibly identify the head itself, and the work done, not just say "clean & check head".
Obviously all guides and seats are presumed to need work. | | | | | Joined: Jul 2011 Posts: 9 New Guy | | New Guy Joined: Jul 2011 Posts: 9 | I've taken the head to a machine shop I like to be checked. Thanks again for the advice.
I'm no "Guy".
Love my '51 GMC 5Window, he's my man and yes, I can FIX him.
| | | | | Joined: Dec 2004 Posts: 1,897 Shop Shark | | Shop Shark Joined: Dec 2004 Posts: 1,897 | If you want the best money for it, advertise it at the inliners site. Lots of racing guys would give their left one for an H head. | | | | | Joined: Dec 2008 Posts: 1,922 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 1,922 | | | | | | Joined: Jul 2011 Posts: 9 New Guy | | New Guy Joined: Jul 2011 Posts: 9 | Thanks for the ideas on where to post. I'll be more excited when and if the head is good.
I'm no "Guy".
Love my '51 GMC 5Window, he's my man and yes, I can FIX him.
| | | | | Joined: Oct 2006 Posts: 99 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2006 Posts: 99 | How do you tell the difference between a large port and small port 270 head?
Well, my time went so quickly,
I went lickety-splitly
Out to my ol' 55.
As I pulled away slowly,
Feelin' so holy,
God knows, I was feelin' alive..... Tom Waits, Ol' 55
| | | | | Joined: Jul 2011 Posts: 9 New Guy | | New Guy Joined: Jul 2011 Posts: 9 | Mostly tell the difference by casting #. And Cletis is right the best place is Patrick's to learn about the different types.
I'm no "Guy".
Love my '51 GMC 5Window, he's my man and yes, I can FIX him.
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