Mike Graham/Gary Summers

[BBF67]

Originally Posted by Mike Graham

Just in case Pat ,Ben,Wesley or Travis are reading this.... To maybe save a needless tear down. Both cars have the correct casting number heads. Just sayin.

So you are saying he was thrown out with a casting number of D7OE-DA?

[HawkBrosMav]

Originally Posted by BBF67

So you are saying he was thrown out with a casting number of D7OE-DA?

No I’m pretty sure he is saying both the DA and the DC head should be listed.. no reason the DC head was removed when the DA head was added..

[Adger Smith]

Same head, different suffix..
looks like a paper work screw up to me.

Wonder what RJ Sledge has to say about it?

[Mike Graham]

What I was saying was that both cars that I am associated with have the DA head. That is the head that is listed in the blueprint spec,so by definition , it is the correct head. The takeaway should be to check the blueprint spec before you build a new combination. That is what you will be held to in teardown.

[Rich Wallin]

Originally Posted by Mike Graham

What I was saying was that both cars that I am associated with have the DA head. That is the head that is listed in the blueprint spec,so by definition , it is the correct head. The takeaway should be to check the blueprint spec before you build a new combination. That is what you will be held to in teardown.

My take on this the part numbers supplied to nhra need to be updated .... in my experience as an engine design engineer the suffix change usually is production tool related not base design / performance driven

[QuickII]

I heard from a reliable source it was for altering the intake casting number, and booster modifications, not the head at all.

[BBF67]

That could explain why an intake and carburator was seen being carried into the tech trailer.

[Mark Yacavone]

Originally Posted by QuickII

I heard from a reliable source it was for altering the intake casting number,

77 is one year only, but shouldn't be hard to find.

Originally Posted by QuickII

booster modifications,

So what?

[Billy Nees]

Originally Posted by QuickII

I heard from a reliable source it was for altering the intake casting number, and booster modifications, not the head at all.

I have been told on numerous occasions by numerous Tech people (including Gracia) that NHRA Tech ONLY checks carb model,throttle bore and venturi size. Period.
If there has been a change in that policy, I'd sure like to know!