IHADAV8.com - Turbo Buick Tech, and Nonsense
Tech Area => General Buick Tech => Topic started by: good2win22 on June 24 2014, 03:24:29 PM
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I've got a line on a set of these heads that have been set up to run a roller cam, ie, the spring pressure. Any thoughts? A while back I asked for some flow numbers for stock heads. These things right out of the box flow a tremondous amount of air. I have a copy of the bench flow for the heads in question but just the website for the stock flow numbers.
Anybody running these heads? Stroked or stock? Camshaft selection for your combo.
I have a complete engine sitting in the barn that I would like to make a mid 10 second street monster with. You know, the occasional track grudge match machine and late model street killer. Basically a Timex.... Takes a lickin' and keeps on tickin!
Talk to me folks...
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I have a new pair that were further ported by Nick Micale. Haven`t decided what block they`re going on...or If I`ll ever use them. I have a 3.8 std std block that`s been freshened and balanced...or a 4.1 I have sitting here. With the size of the ports I`d expect some good rwhp numbers north of 25 PSI with my 6262...and that`s prolly not enuf turbo for them. Takes a lot more than just a set of killer heads to go fast...and on top of that you have to upgrade everything else...get the combination right...and have the tuning knowledge. PACECARTA and SW should be able to help you out with your goals. These guys have forgotten more than I`ll ever know.
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should be good heads. Being aluminum, they could stand a compression ratio of 9-1 or better for best performance on the street to get back some of the thermal loss. Using a longer duration cam will make the low speed worse. You might get some back by running more timing in first.
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I was looking at shift points around 5500ish. Probably financially better to port the iron stockers since I won't be using the heads to it's full potential. No reason to twist it up too tight for my goals and I want it to live through years of excitement! Any thoughts on the rev x grinds from mike over at full throttle. I see that his grinds are a tad different. The 210/215 looks interesting.
I need to get to work. No time to research any more this morning. Thanks for the responses!
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If you want to port them yourself you're welcome to come up and use my tools Jason. I did the same thing for Guess on TB.com. :D
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I may do that Charlie. Not in any rush to tear that spare engine down just yet. Need to get over and get the front aligned. It really bothers me to see my car sitting in the carport and only driven short distances on the weekends. I'm anxious to see how well she handles after the front upgrade. I may call you next week to set up an appointment if it's neccessary
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Call the shop and try to set it up for a Wednesday. That's usually the slowest day. Number's 254-826-4255. I need to get the correct shims at the shop since we're out right now. We're going to be closed on the 4th & 5th so maybe the sixteenth would be the best date since the week after will be the week people come in to get the stuff that broke down over the holiday fixed.
If you decide to do the heads I can send you some links for the bigger valves as well as the number to where I've been taking my heads to. Gary knows me and knows how specific I am when it comes to head work, so he'll do a good job.
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I'm balls deep into a set of heads (second set) these have stainless valves and pressed in guides looks like the intake valves have been unshrouded as well.
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a couple more
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Those look like a pair of mine Larry. Where'd you get them?
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Vancouver Island canada the porting is all me they where untouched under the valves a little on the intake port to accommodate the bigger valve
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Looks nice! The only heads that I ever ported were off a 1969 Ford 429. It took forever to get them the way that I wanted. At the time trick flow had not come out with their A460 heads, so I was balls deep into them not knowing a single thing about porting heads. No flow bench, so it was by the seat of the pants. I feel they turned out pretty well. Made a hard first gear pull one time in that old thunderbird and one of the motor mounts broke, jammed the throttle wide open. Before I could get to the ignition to shut her down, I glanced at the tach and was going past 7800. Never floated a valve and didn't throw a rod through the side of the block. Man, I beat the crap out of that old ford and she kept asking for more...
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Vancouver Island canada the porting is all me they where untouched under the valves a little on the intake port to accommodate the bigger valve
Larry, I have pics of how Joe did mine. If I can find them...do you want me to send them to you?
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Please!
I will add to my data base I have already downloaded and printed all of Charlie's pics.
Bet that is why they look familiar!
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Please!
I will add to my data base I have already downloaded and printed all of Charlie's pics.
Bet that is why they look familiar!
PM me your e-mail addy.
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Post the pics on this thread if you wish. I don't mind
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Post the pics on this thread if you wish. I don't mind
My uncle and a close friend passed away in the last 72 hours. I'll get the pics up when time permits.
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Condolences sorry to hear.
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Sorry for your loss. Keep your head up!
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Sorry to hear the bad news, Brad
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Here's one I could find. Save it...then bring it up on your viewer.
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Nice!
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Thanks Brad! JB does nice work those the heads you put the 981s on?
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Thanks Brad! JB does nice work those the heads you put the 981s on?
Joe reworked the heads last fall...and we went with 140 lb valve springs. The 981's I got from you went on the original heads from my numbers matching engine. Joe freshened them up...and I have them sitting here as emergency spares.
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Roller cam springs. I have used the PAC 1201. Was thinking about trying the comp 941s.
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Roller cam springs. I have used the PAC 1201. Was thinking about trying the comp 941s.
Went with a flat tappet 212/212 from CC. Not sure what the part number was for the springs. The revs come on like gangbusters... and it screams through the traps.