Recent content by BSB67

That’s funny

I just looked them up. Pretty close at 0.30”, 0.40”, and 0.50”. 261 cfm compared to 263 cfm @ 0.500”. To the OP - those heads, 221 @ 0.050” cam w/ 0.455” lift, 4200 lbs, 3.23 gear, 1700 rpm converter. P235-70 BFG. 12.9s @ 108-109. It drove just fine.

Yep, but I’m going from memory (I do have everything written down, just didn’t look them up). I think your numbers were a little lower than Brent’s. But your measurements were after the heads had a lot of years and miles on them. IIRC, Brent’s flow bench only drafted 10” and we converted them...

I figured that if my head/engine guy from 1993 working by himself in a little no name shop in the middle of nowhere could get there, most good shops should be able too. There were a couple SS/I and H cars running out of his shop. Those guys do think a little differently.

I’ve lost track. 383 or 440? IMO, if they are done right (picture are not enough to know) and flow 260-ish and going on a 440, they will help everywhere, probably a lot.

I understand the difference between the two

Sure. But others that seem to have strong opinions that your first estimate is very high, l simply have my doubts without seeing a side by side service/parts comparison with a recent job.

I agree it doesn’t seem like folks are comparing apples to apples.

Your sheen variation looks similar to my polyaspartic.

I have 235s on 6” rims, and 255s on 7”. They drive perfectly fine. Years ago I ran 255s on 5.5” rims. The center wore faster, but still nothing noticeable in handling and driving. And way better than what the car was originally equipped with. I’m thinking about putting 255s on the 6” rims...

Happy birthday.

:rofl:

I actually appreciate a really good set of factory heads. Depending on the goal I would consider it on a set of 915s. But if performance is a key driver in the build, I probably would spend the money, and a little more on worked aftermarket aluminum head with a closed chamber that flow 270-280...

I’m looking at it like this. Do you spend $1,800 to have a set of good factory cylinder heads that flow 220 cfm?

Do a break-out of what he wants to do the heads - parts and labor. I think that will speak for itself.