350/360/330 SBC with E-brock heads - CRICKETS

[Alan Nyhus]

Originally Posted by Mike Taylor 3601

The 170 cc intake could be reduced enough for most small block stockers..the 185 not so much

Mike, NHRA shows the Edelbrock heads as having 172 c.c. int. port volume and accordingly adds 5 h.p. to the factor if you use them.

However, as supplied by Edelbrock, they are 185 cc intake ports.

[Daran Summerton]

172 is for SS. Stock is same as factory.

[Bobby Lundholm]

Originally Posted by Daran Summerton

172 is for SS. Stock is same as factory.

Dart is the same way. I ordered a set and they were 180cc. I called Dart and talked to their quality control and was told that the tooling has been worn making the runners larger than advertised. I do know if you find an original older set they do match up to NHRA's specs.

[Mike Taylor 3601]

Originally Posted by Alan Nyhus

Mike, NHRA shows the Edelbrock heads as having 172 c.c. int. port volume and accordingly adds 5 h.p. to the factor if you use them.

However, as supplied by Edelbrock, they are 185 cc intake ports.

That's not good...