Update E-F/SA Bird Build...

[oldskool]

Since the stock heads can't be ported, and some are better than others, do you know if the top guys, running the 330hp engine, gather up lots of 16 & 62 heads and check 'em on a flow bench to find the best ones ?

[brent flynn]

Originally Posted by oldskool

Since the stock heads can't be ported, and some are better than others, do you know if the top guys, running the 330hp engine, gather up lots of 16 & 62 heads and check 'em on a flow bench to find the best ones ?

Yeah, i would imagine so... i wanted to do that, since i have 4 pair...i will eventually do that..i have 3 intakes as well...

[a pontiac]

while the cam is swapped out, check ring drag with torque wrench on crank. getting to 11lb. helped mine. some are a lot lower, but with vac-u-pan setups. higher spring press. needs 3/8 pushrods, 4-4 1/2 qts. in the oil pan helps. Be sure you are getting max. legal valve lift.

[brent flynn]

When i assembled it, it took 14lb to break it loose, with rope seal... considering that i dont have a real high dollar ring package, thats probably pretty good... it has surely loosened up some, with 91 passes on it.
I think i will see a major gain, in cam swap, and loosening converter, also goin to a lightened 350 turbo. Gonna try to have all this done by mid season, or before. I run 5 qts oil...little too scared to run any less... I blow this one up, im done...hehe I hope to gain some HP in headwork , next winter...Just doin the cam/trans/converter this year...and running the crap out of it...

[oldskool]

This mention of oil reminded me of the HPP mag article about Scott Burton's B/SA RA4 Bird. He said that he runs 0-10W oil. I didn't even know they made oil that thin. He claims that the thin oil and a crank scraper, instead of a windage tray, is good for as much as a tenth.

I was wondering if most class racers are using restricted pushrods to keep too much oil from accumulating in the top end. Back in the old days, we just put pipe cleaners in the pushrods and went racing. I reckin if you can get just the right combo of oil thickness and pushrod hole size, you can get enuff oil to the top, but also keep more in the pan, so that you could actually get by with a bit less oil. But hey, I'm no expert. It just sounds reasonable.

http://www.hotrod.com/cars/featured/...tiac-firebird/

[FireSale]

Originally Posted by oldskool

This mention of oil reminded me of the HPP mag article about Scott Burton's B/SA RA4 Bird. He said that he runs 0-10W oil. I didn't even know they made oil that thin. He claims that the thin oil and a crank scraper, instead of a windage tray, is good for as much as a tenth.

I was wondering if most class racers are using restricted pushrods to keep too much oil from accumulating in the top end. Back in the old days, we just put pipe cleaners in the pushrods and went racing. I reckin if you can get just the right combo of oil thickness and pushrod hole size, you can get enuff oil to the top, but also keep more in the pan, so that you could actually get by with a bit less oil. But hey, I'm no expert. It just sounds reasonable.

http://www.hotrod.com/cars/featured/...tiac-firebird/

Ok.... I have way too much cash under my hood to try to squeeze a bit of ET out of...oil... I'll leave this to others. Frankly, I'd rather load up than blow up.

Dale

[oldskool]

Originally Posted by FireSale

Ok.... I have way too much cash under my hood to try to squeeze a bit of ET out of...oil... I'll leave this to others. Frankly, I'd rather load up than blow up.

Dale

Yeah, I always ran 50W Valvoline and 70-80psi pressure in my 455 bracket engines--never lost one.

But Scott seems to be doing OK with his thin oil. He's won some big races and has qualified well at most of the events he's entered.

http://www.knfilters.com/News/print.aspx?id=3432

http://classracer.com/classforum/showthread.php?t=53555

http://www.nhra.com/story/2014/10/1/...ortsnationals/

He went .977 under at Indy.

http://www.dragracecentral.com/DRCSt...r2014#indextop