Till a storm blew in and knocked out the power. Well I did get both heads tubed and the pinch opened up on one head. Customer isn’t in a big big hurry but with no racing this weekend I should be able to hit the hard.
So I am assuming since you tubed the pushrod holes, that you ported into the original ones. Is that correct? I'm just curious, how much do you suppose that widens the port? I know it's a lot, but I'm curious about a number.
Cool. Thanks. I've always wondered how much porting one that far added.I’ll try to let you know tomorrow but I’m thinking at least .100 plus what you gain pushing the common wall over and straightening it.
Cool. Thanks. I've always wondered how much porting one that far added.
I’ll try to let you know tomorrow but I’m thinking at least .100 plus what you gain pushing the common wall over and straightening it.
Oh I know it is. I'm just curious as to how much the port is opened up.Mine are tubed like that from jim laroy. They flow 345cfm. Must be worth it.
man, that's crazy!Gonna be awhile guys. Power isn’t supposed to be back on till 11pm tomorrow night. We got hammered with a storm here.
Mine are tubed like that from jim laroy. They flow 345cfm. Must be worth it.
Mine are tubed like that from jim laroy. They flow 345cfm. Must be worth it.
I would sure love to see before and after numbers from that flowbench.
I know it's not a SB head, but IIRC it was something like 292cfm OOTB and 345 after the porting and valve diameter change.
That would make more sense.
I know it's not a SB head, but IIRC it was something like 292cfm OOTB and 345 after the porting and valve diameter change.
I've got some SideWinders here ported by a BIG name guru here that I was asked to flow that peak at a whopping 287cfm--sold as flowing 318+cfm!
One thing people should keep in mind regarding flow bench results where the same head is tested at multiple facilities.
If bench A is 300, bench B is 315, bench C is 320........ regardless of the different numbers........the head itself didn’t change.
In other words, if the heads are on an engine that’s being dyno tested, and you tape the flow sheet from bench A, then B, then C on the engine....... it won’t have any affect on engine output....... or the dyno sheet.
Same for the drag strip.
The car won’t go quicker with the bench C flow sheet in the glove box instead of the one from bench A.
I just expect that the numbers from different benches will differ.
(No, it “shouldn’t” be that way, but that seems to be the reality)
If RAMM’s customer was happy with the performance of his heads as he was thinking of those 318cfm ports........ the good news is, the performance will be exactly the same, even though he now also has a piece of paper that says 287cfm.
One thing people should keep in mind regarding flow bench results where the same head is tested at multiple facilities.
If bench A is 300, bench B is 315, bench C is 320........ regardless of the different numbers........the head itself didn’t change.
In other words, if the heads are on an engine that’s being dyno tested, and you tape the flow sheet from bench A, then B, then C on the engine....... it won’t have any affect on engine output....... or the dyno sheet.
Same for the drag strip.
The car won’t go quicker with the bench C flow sheet in the glove box instead of the one from bench A.
I just expect that the numbers from different benches will differ.
(No, it “shouldn’t” be that way, but that seems to be the reality)
If RAMM’s customer was happy with the performance of his heads as he was thinking of those 318cfm ports........ the good news is, the performance will be exactly the same, even though he now also has a piece of paper that says 287cfm.