What head would you run on a SC 615?
 

I’m currently running a conventional head BBC in an 18 Racecraft and it is doing fine but I’m thinking of building a 12 degree raptor head 615. What are your thoughts? Pros or cons if you have run them or worked with someone that has.

Or would you build a 20 degree head still a 615” tall deck?

Thanks in advance

Re: What head would you run on a SC 615?
 

Hello Mike,
Since no one chimed in so far......
We have run the full spectrum of BBC heads over the years on our Super Comp cars, beginning with a 468 with some Winters foundry heads in 1990, up to today with 648" engines with 12°heads. Our 12° Raptor headed engines have always run strong. We are currently running a 20° engine in one car as an experiment, can't say its a lot faster than a 12° headed engine but it is alleged to be more durable valvetrain wise. We have broken an occasional intake rocker arm on the 12° engines ( the wide offset ones) after 300 plus runs and now have them re-bodied at some interval.

Just my .02
See you at the races,
Wayne Kerr

Re: What head would you run on a SC 615?
 

Wayne, thank you for the info. I bought an SR20 598 this week that I will freshen and put in this fall after I get the season over. I don’t want to start over with a new combo at the middle of the year. I thought about the 12 degree stuff and it might run slightly better I couldn’t warrant the extra cost for the little bit of power over the 20* stuff.

Everyone I know with the 20* head likes it and they make good power.

Re: What head would you run on a SC 615?
 

Who did the port work on the heads?

Re: What head would you run on a SC 615?
 

Regan, the engine was originally from Sunset I’m told but don’t know whose program the heads were ported with. Will know more after Tulsa when I get it and take it apart.