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Discussion Starter · #1 ·
Been looking for a set of a429’s for some time now. I found these for sale recently.

About to pull the trigger but the port work seems a bit much. Check the pictures, curious what you guys think.

either way I’m sure they’ll work, just curious if there’s any issue I could run in to that’s unforeseen
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I have some A429's that the exhaust ports break into the headbolt hole just like those. It's not an issue.

Intake side look like they have been ported. As long as whoever did the work knew what they were doing those can be decent heads.

Are they cheap?
 

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Discussion Starter · #5 ·
I have some A429's that the exhaust ports break into the headbolt hole just like those. It's not an issue.

Intake side look like they have been ported. As long as whoever did the work knew what they were doing those can be decent heads.

Are they cheap?
Cheapest I’ve found found… but they are bare so not an insane deal. $1200
 

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They appear like a high effort job with a bunch of cross section.
We don't make exhaust ports that large unless we are looking for every last bit.

Breaking into the bolt holes is not a problem. We line the bolt hole with a brass tube.

Suitability depends on your combo and rpm range.

Definitely need seat work.

If the seat ID / choke(s) are lager than 2.00" intake and about 1.55" exhaust Id pass.






Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
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Discussion Starter · #7 ·
They appear like a high effort job with a bunch of cross section.
We don't make exhaust ports that large unless we are looking for every last bit.

Breaking into the bolt holes is not a problem. We line the bolt hole with a brass tube.

Suitability depends on your combo and rpm range.

Definitely need seat work.

If the seat ID / choke(s) are lager than 2.00" intake and about 1.55" exhaust Id pass.






Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Thanks, I was waiting for you to give some input. I’ll bring a caliper with me when I check them out.
 

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Discussion Starter · #8 ·
Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
I literally just finished porting a set of d0ve’s, i ported them pretty heavily. Used your porting index for a lot of help. They are in the machine shop getting larger valves cut in.

Am I missing out on a lot of power if I don’t buy these a429‘s and just run the ported D0ves?
 

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The power difference will depend on level of port work, displacement and state of tune.

The A429's have a better exhaust port and will breath better top side.





Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
 
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