Olds 455, head porting #s,anyone interested?

« **on:** May 28, 2008, 12:06:11 PM »

I'll be doing a quickie bowl, streamline the guides, back cut the intake valves,blend short side radius. I'll keep track of time and $ spent. Also I will have flow #'s be fore and after. I shoulsd have only 2 to 3 hrs per head. I'm hopeing to pick up 15 cfm or so. heads are going to the hot tank thursday.

« **Reply #1 on:** May 28, 2008, 12:28:29 PM »

This will be very cool info

« **Reply #2 on:** May 28, 2008, 12:34:47 PM »

Quote from: AA/Paul on May 28, 2008, 12:06:11 PM

I'll be doing a quickie bowl, streamline the guides, back cut the intake valves,blend short side radius. I'll keep track of time and $ spent. Also I will have flow #'s be fore and after. I shoulsd have only 2 to 3 hrs per head. I'm hopeing to pick up 15 cfm or so. heads are going to the hot tank thursday.

Sounds awesome. 15cfm is good chunk for pretty much free HP

« **Reply #3 on:** May 28, 2008, 01:37:25 PM »

We need more guys like Paul around don't you think? Someone who appreciates the finer things in life.

« **Reply #4 on:** June 01, 2008, 03:45:15 PM »

It was my B day fri. 41yrs young!! and to think Ijust dicovered boating last year!!! Look for data towards the end of the week on the heads.

« **Reply #5 on:** June 01, 2008, 07:15:36 PM »

what letter head are they I did some G's got in the 270's did nothing over .600

« **Reply #6 on:** June 02, 2008, 05:49:29 AM »

Ka with the 45 deg exh seats. I'll be running the stock rockers so I'm limited on lift. If there's a cheap rocker solution I'm there.

« **Reply #7 on:** June 03, 2008, 11:07:09 AM »

Alrighty then. OH I'm running logs. So the exhaust side is for ideas only. Got 1/2 of 1 head done. Flow it the tonite or 2morrow. It looks like i'll have about 2 hrs in each head total. Maybe less. This NOT an allout nut slinger. Just looking for EASY HP. The catridge roll sanding is to kinda smooth over the carbide bumps. Sanding time 5 min. Don't be afaid to try this!!!

« **Reply #8 on:** June 03, 2008, 11:11:56 AM »

What did you do for the bowls, are you blending them into the bottom angel by hand? Or are you using some sort of cutter for 75*?

« **Reply #9 on:** June 04, 2008, 07:20:48 AM »

PW......
I'm doing the bowls by hand. Just bearly tapering the intake guides and taking about .03 off the pushrod tube lump. 45 deg seats on exh. Just basic stuff.

« **Reply #10 on:** June 04, 2008, 08:23:36 AM »

Need to know the before numbers too - every bench is different!

Thanks for the post.

« **Reply #11 on:** June 04, 2008, 10:29:37 AM »

Speedy...I agree #'s only mean something if ya know where they came from.

« **Reply #12 on:** June 10, 2008, 12:46:20 PM »

Quick update.
A fast blend of the bowls,radiusing guide,no port match yet.
Disapointing ! only picked up 12 cfm at .500. stock valve, and seat.
I'll give clear steps of a,b,c and results. this is step 1 of 3.

« **Reply #13 on:** June 11, 2008, 03:38:50 PM »

Quote from: AA/Paul on June 10, 2008, 12:46:20 PM

Quick update.
A fast blend of the bowls,radiusing guide,no port match yet.
Disapointing ! only picked up 12 cfm at .500. stock valve, and seat.
I'll give clear steps of a,b,c and results. this is step 1 of 3.

You were only shooting for 15cfm from what I remember - 12 is most of the way there....

« **Reply #14 on:** July 28, 2008, 02:35:26 PM »

I got all the info sitting here. I got to figure out how to scan it , then transfer the files. Hopefully on tues.

« **Reply #15 on:** July 31, 2008, 12:52:30 PM »

Stock left quikie bowl work right

« **Reply #16 on:** July 31, 2008, 12:54:00 PM »

finished flow #

« **Reply #17 on:** July 31, 2008, 01:01:01 PM »

Info and #'s done on a superflow bench at 28"/ with the 455 bore dia. A larger base dia would give bigger #'s

« **Reply #18 on:** July 31, 2008, 01:02:50 PM »

Mr Mondello said I didn't do too bad for a rookie. That's us at a friends BBQ earlier this month.

« **Reply #19 on:** July 31, 2008, 01:03:41 PM »

opps here's the pic

« **Reply #20 on:** July 31, 2008, 01:05:52 PM »

right side up this time.

« **Reply #21 on:** July 31, 2008, 01:12:52 PM »

these flow #'s means it is capable of 479 hp with peak flow at 4800 rpm.

's just ask.

AA/Paul

KonaCole

pw_Tony

GlassCutter

AA/Paul

VAMI

AA/Paul

AA/Paul

pw_Tony

AA/Paul

speedymopars

AA/Paul

AA/Paul

speedymopars

AA/Paul

AA/Paul

AA/Paul

AA/Paul

AA/Paul

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AA/Paul

AA/Paul