J.C.
02-25-2004, 07:51 PM
Pro Mike, you and I have emailed several times about allowing the superchief head for the traditional pontiac in the xtreme street class. I wish to discuss this in a public forum so there can be clarity on this.
Upon asking why the superchiefs were not allowed, you stated rule 1.17c, that the intake bolt pattern was not in the OEM location for these heads. I respectfully disagreed by pics and the verification by former tech Wesley Roberson. You then stated that the head was a raised roof design and the bolt holes were higher (tho in the OEM location?) I would understand this ruling if no spacers were allowed and other raised roof designs are not allowed. SMALL BLOCK CHEVY spacers are allowed and raised roof SBC heads are allowed, I am confused by your ruling.
I would like to be a participant in this class. BUT if the rules are set up favoring other makes, ( with SUPERIOR HEAD FLOW by the way) and the superchief heads are not allowed in this class, I respectfully ask for a weight break of 150lbs for guys wanting to run a traditional pontiac with 60+ cfm less head flow than other makes allowed. I am sure the tech committee knows that HP of any engine is limited by the air flow potential of the heads on X,Y or Z brand of engine.
Here are just a couple of examples of BBC heads allowed.
Dart 360-430+ cfm
Dart Pro 355 430+ cfm
By comparison here is the best pontiac head allowed at the same weight of a BBC:
Pontiac Edelbrock 360+ cfm
By choosing to run a traditional pontiac engine of say 500 cubes I basicly have a small block head on a big cube engine.
I do not want an unfair advantage over other makes of engines. I just want to be treated fairly with the limited availability of heads that I have to choose from running a traditional pontiac engine. :confused:
Upon asking why the superchiefs were not allowed, you stated rule 1.17c, that the intake bolt pattern was not in the OEM location for these heads. I respectfully disagreed by pics and the verification by former tech Wesley Roberson. You then stated that the head was a raised roof design and the bolt holes were higher (tho in the OEM location?) I would understand this ruling if no spacers were allowed and other raised roof designs are not allowed. SMALL BLOCK CHEVY spacers are allowed and raised roof SBC heads are allowed, I am confused by your ruling.
I would like to be a participant in this class. BUT if the rules are set up favoring other makes, ( with SUPERIOR HEAD FLOW by the way) and the superchief heads are not allowed in this class, I respectfully ask for a weight break of 150lbs for guys wanting to run a traditional pontiac with 60+ cfm less head flow than other makes allowed. I am sure the tech committee knows that HP of any engine is limited by the air flow potential of the heads on X,Y or Z brand of engine.
Here are just a couple of examples of BBC heads allowed.
Dart 360-430+ cfm
Dart Pro 355 430+ cfm
By comparison here is the best pontiac head allowed at the same weight of a BBC:
Pontiac Edelbrock 360+ cfm
By choosing to run a traditional pontiac engine of say 500 cubes I basicly have a small block head on a big cube engine.
I do not want an unfair advantage over other makes of engines. I just want to be treated fairly with the limited availability of heads that I have to choose from running a traditional pontiac engine. :confused: