Re: Important if you run D-H/S or SA
 

Then, you have no argument against the manifolds,

Re: Important if you run D-H/S or SA
 

Again David, I'm missing your point.

Re: Important if you run D-H/S or SA
 

wow, is it that hard. How much hp does these non stock blocks give, answer that

Re: Important if you run D-H/S or SA
 

I just looked at Nitro Joe's stats, 62/65 competitors in D/SA have an aftermarket block listed available for their combo in the NHRA Accepted Products list (no Olds 455 or Buick 455 available, as far as I know). Yes, it is unfortunate there are not better blocks available for some combinations, but that doesn't make it ok to accept an intake manifold that's was originally listed by Mopar as "the result of an extensive dynamometer and track development program" and "for your super stocker, formula car, or bracket racer."

Re: Important if you run D-H/S or SA
 

why are you just limiting to one class, billy goes after the 273 manifold regularly. Even in this conversation.

Re: Important if you run D-H/S or SA
 

This thread is discussing an intake manifold that is run in classes D-H.

If you're really concerned about an aftermarket block, make one or get one made, submit it to NHRA. You can do that if you really wanted to. I cannot make a manifold or get one made and have NHRA accept it.

Re: Important if you run D-H/S or SA
 

You lost me at "Blocks that will allow a better cylinder".

Why are you complaining about the blocks when the subject is about intakes and cylinder heads?
The majority of the racers are going fast with the OEM block both filled and unfilled.
It boils down to the quality of the machine work and the final finish of the cylinder walls.

Re: Important if you run D-H/S or SA
 

So wall thickness and deck thickness have nothing to do with a better seal. And if so many racers are going fast, with stock blocks, why the need for aftermarket blocks.

And you want to limit it to that one subject.

Re: Important if you run D-H/S or SA
 

David, what side of the crusade are you on? What would you like to contribute to the conversation? Do you feel that the lack of an aftermarket block for the 273-360 is reason enough for the allowance of non OEM Cylinder Heads and Intake? Am I understanding you correctly? Just clarifying

Re: Important if you run D-H/S or SA
 

I am, and i see people like you and Billy doing a lot of tap dancing. How much extra hp does aftermarkets give?