Does anyone know what the differences are between the SCJA and SCJB heads? on the Ford Racing Parts website it says the SCJA is for 429/460 engine and the SCJB is for the 514 engine. Are the differences only because the 514 crate engine is a roller engine and the 460 crate engine is a flat tappet engine. If this is why, what are the differences? Is it just a spring difference or what? I couldn't find any info about it on the Ford Racing Parts site or Jon Kasse's site. Any info would be appreciated.

Steve

 

The B heads are the Kaase redesign. On the 521 stroker from the FRPP catalog the new heads were good for about a 50 HP increase.

Brad

 

Oops, gave you bad info on the last post.

The diff is valvetrain setup. The basic head is the same - the Kaase redesign. The A version is setup for the 460 crate engine that uses a flat tappet cam. The B version is for the 514 that uses a roller cam setup. The difference is in the valvesprings.

Brad

 

Thanks for the info Brad. I am doing research on building a 545 stroker big block. Trying to figure out which heads and cam to use that will give me the power in the RPM range I want. I was told that the Trick Flow street heads would be better for what I want than the FRPP heads. I still haven't found a flat tappet hydraulic cam that will do what I want. May have to bite it and go to a roller setup to get what I want. Oh well. Guess I'll have to save a little longer.

Steve

 

i was gonna go with trick flow's but after some reseach i found out that the frpp scj heads flow better out of the box and are cheaper also if you want to go roller check out doug herbert i went with a herbert roller billet cam and roller lifters and only spent around 450.00 and they seem to work very well 3 sesons on a pulling motor hitting 7000+rpms and still works very well. in case you want to check herberts the number is 800-444-7373

 

Great. Thanks alot. I am looking at a max RPM of about 6500 with as much torque as I can get. The flatter the torque curve the better. I have heard that the FRPP heads do flow better, but I don't know if thay would work the best for what I want. With a 545 though the extra flow of the FRPP heads may be better. Hell I don't know. I am so confused. Maybe by the time I can afford it I will know what I want. Got a Weiand Stealth CJ intake and a set of L&L headers that I also want to work with too.

Steve