Y2Kvert4me

Yes, and there seems to be a lot of confusion or bs out there about the AFR's too.

Tony has always been very conservative with his cam recommendations, and suggests potential clearance problems even with cams as "small" as Verne's. (low 230s duration) when milled to 61-62cc.

Yet LG suggests a AFR 205 milled to 59cc, with a .040" gasket still offers more valve drop clearance than a stock head, and will clear fine even with a low/mid 240s duration cam like the G5X4.


Who is right, who is wrong, I don't know, but that's a rather HUGE difference in knowledgeable advice about the same product.

vsocks1

So if this is true, why? TFS has lower valve angle, but maybe larger intake valve? Now I am confused!!

vettenuts

A lot of the LG cams, from what I have seen, don't offer accepted minimum clearance. I spend a lot of time doing mine, AFR heads milled to 60 cc (which Tony then opened to 62 cc with his chamber work) and the AFR 6016 cam (224/228). I was just under accepted minimum with the 0.040" Cometics. Tony was pretty much right on the money for clearance.

REDZED2

For what its worth. Stock 64cc TFS 215 apparently from a couple people who have cc'd them spec in at 63cc NOT the advertised 64cc. Might explain why vsocks1 thought he had his milled 3cc off the stock volume when he actually went from 63cc stock to his cc'd 60.

zeevette

I think the TFS intake valve is 2.04", versus 2.02" for the AFRs.

Russ K

My 215 TFS heads also measured at 63 cc.

Russ Kemp

GETOPLES

It was frustrating for me when I was in conversation with both LG and AFR. LG reported to me that I would have no problem using AFR 205's milled to 59 cc with a LG G5X3 cam. No problem referring to clearance issues. When talking with AFR directly they " highly recommended" fly cutting with that same head/cam combo and said they would probably go to 60 or 61 cc "just in case". My goal was to have good low end torque which I thought would be achieved with AFR 215' 59 cc and G5X3....now I look to the corvette guys for help.

vettenuts

Talk to Tony directly, he won't steer you wrong.

I think the operative phrase is "it will clear" which in my mind means no impact. However, the setup doesn't achieve standard practice minimum clearance. Many packages are sold as they will clear. I don't think AFR was steering you wrong.

GETOPLES

I didn't get the feeling that they were given half *** info or misdirection. In fact they were great to talk you. It was just the conflicting pieces of information that left me. I have had an additional conversation and LG report that using a 205 milled to 59 cc, 45 gasket produced 11.2/1 compression with great low end torque. The Trickflow 215 did no better HP compared to the AFR's and in fact had worse low end torque. Both heads were milled to 59 cc.

GETOPLES

By the way what is acceptable clearance?...and please don't say as long as it doesn't hit.

vettenuts

I: 0.080"
e: 0.100"