Re: 611 ci, 9000 rpm. Turn it up!

DaveMcLain July 13th 2016, 8:13 am

The thing about this truck pull stuff is that it isn't just 9000 rpm it is 9000 rpm for as long as it takes!

cletus66 July 13th 2016, 12:31 pm

Scott Foxwell wrote:
cletus66 wrote:That thing is singing !!! How long does something like that last before a refresh with new springs, etc?
This engine has 30 dyno pulls and 4 competition pulls (four wins) all in the 8000-9000rpm range. It's due for valve springs and they have a clear view oil filter in the truck and it's as clean as a whistle. Bottom end should be good for the season. Valve train was built for 9K rpm duty. All stainless T&D rockers, REV Ti valves, PAC springs and retainers, geometry is spot on, Smith Bro's 1/2" push rods, .936 DLC coated keyway lifters in CHE bushings and like Chris said, 60mm cam. It took many many hours to get the heads to where they were ready to bolt on. Almost every part on this entire build had to be modified, trimmed, fixed, tweaked, etc. I got pretty frustrated a few times but the effort was worth it.

Thanks.

Lem Evans July 13th 2016, 12:42 pm

Straubtech wrote:
Lem Evans wrote:David Garrett slayed many Sonny's & Schmidt units to win the 2015 NTPA region IV 4X4 modified chanpionship

Good looking truck Lem. What's the "ticulars" on that engine?

Big ass heads that Carrol Carter sells, Hughes manifold, 60mm cam, 4.650" bore x 4.750" stroke, injected methanol.

DaveMcLain July 14th 2016, 5:40 pm

Straubtech wrote:
68galaxie wrote:Very cool engine build.
What cam timing was eventually used? I hear it was less than .900" lift.
I also assume reasonably tame lobe profiles as dictated by high rpm range?

Like to hear some "tech" .

Cheers

This engine has 60MM cam journals and .937" Key way lifters. Camshaft is:

.894/.880
288/319 .050
112 LSA

Is that the design data or what the cam blows up to when ground on that big core? I would have thought that it would have had more like 295 on the intake side.

Straubtech July 14th 2016, 5:52 pm

DaveMcLain wrote:
Straubtech wrote:
68galaxie wrote:Very cool engine build.
What cam timing was eventually used? I hear it was less than .900" lift.
I also assume reasonably tame lobe profiles as dictated by high rpm range?

Like to hear some "tech" .

Cheers

This engine has 60MM cam journals and .937" Key way lifters. Camshaft is:

.894/.880
288/319 .050
112 LSA

Is that the design data or what the cam blows up to when ground on that big core? I would have thought that it would have had more like 295 on the intake side.

Master were generated for this project.

Scott Foxwell July 14th 2016, 7:37 pm

Straubtech wrote:
DaveMcLain wrote:
Straubtech wrote:
68galaxie wrote:Very cool engine build.
What cam timing was eventually used? I hear it was less than .900" lift.
I also assume reasonably tame lobe profiles as dictated by high rpm range?

Like to hear some "tech" .

Cheers

This engine has 60MM cam journals and .937" Key way lifters. Camshaft is:

.894/.880
288/319 .050
112 LSA

Is that the design data or what the cam blows up to when ground on that big core? I would have thought that it would have had more like 295 on the intake side.

Master were generated for this project.

This was probably one of the most accurately made cams I've ever installed. Lobe lift and events were dead on the money for #1 and #8, both.

Lem Evans July 14th 2016, 7:58 pm

DaveMcLain wrote:
Straubtech wrote:
68galaxie wrote:Very cool engine build.
What cam timing was eventually used? I hear it was less than .900" lift.
I also assume reasonably tame lobe profiles as dictated by high rpm range?

Like to hear some "tech" .

Cheers

This engine has 60MM cam journals and .937" Key way lifters. Camshaft is:

.894/.880
288/319 .050
112 LSA

Is that the design data or what the cam blows up to when ground on that big core? I would have thought that it would have had more like 295 on the intake side.

Dave, If given the correct info cam grinders should be able to adjust to the big journal and or bigger roller lifter wheels.

An example would be: Comp uses an alpha character after a lobe # to denote such. A four digit lobe # with a R after it would be a 2.125" BBF or something else with a 55MM journal....etc.

Straubtech July 15th 2016, 9:53 am

Dave,
Over the last 18 months just about every cam that been sold has been ground on new masters. I am slowly building Landis library of masters so that we can publish a master list in the near future.

DaveMcLain July 18th 2016, 3:24 pm

The reason I asked about the cam lobe being blown up onto a big core was that seems like less duration than I would have thought for 9000rpm in a 600+ cubic inch engine where do the torque and HP peaks happen?

68galaxie July 18th 2016, 4:12 pm

I would guess that the 0.200" and 0.300" duration was reasonably high for a 288 @ 0.050" duration.
0.050" duration is only one number in a cam lobe design.

The long exhaust duration must be helping clean out the residual combustion gases too Smile

Sweet build!!!

dfree383 July 18th 2016, 4:36 pm

Those heads aren't small either.

Scott Foxwell July 18th 2016, 4:53 pm

DaveMcLain wrote:The reason I asked about the cam lobe being blown up onto a big core was that seems like less duration than I would have thought for 9000rpm in a 600+ cubic inch engine where do the torque and HP peaks happen?

The actual duration is a little more than Chris quoted. Wink

Peak power 1440 @ 8K, peak Q 1030 @ 6700.

Scott Foxwell July 18th 2016, 4:55 pm

dfree383 wrote:Those heads aren't small either.

No, they're not. Very good head for this application. I wouldn't want anything any bigger. When the induction is right, the cam doesn't have to be crazy. This one has >.900" calculated. A lot less in the running engine.

Alpine July 19th 2016, 7:18 pm

It's been a pleasure to watch the local guys make a name for themselves over the last couple years. Barry and Ken have dominated locally for years already. It's nice to see them hang in there with the big dogs!

Straubtech July 20th 2016, 10:02 am

Alpine wrote:It's been a pleasure to watch the local guys make a name for themselves over the last couple years. Barry and Ken have dominated locally for years already. It's nice to see them hang in there with the big dogs!

I just appreciate the opportunity that Barry gave us. Scott and I are nobody's but Barry knew how Ken's motor ran with my camshaft against stuff that was 100 CID bigger. Thor is proof that combinations rule.

Straubtech August 1st 2016, 12:19 pm

9 Pulls this season and 9 wins. This weekend on a tight track it was 30ft over second place.

Mark Miller August 2nd 2016, 12:59 am

Straubtech wrote:9 Pulls this season and 9 wins. This weekend on a tight track it was 30ft over second place.

If the truck doesn't have a name on the side of it "Undefeated 2016" would work!!!!! Smile

Straubtech August 2nd 2016, 9:29 am

Mark Miller wrote:
Straubtech wrote:9 Pulls this season and 9 wins. This weekend on a tight track it was 30ft over second place.

If the truck doesn't have a name on the side of it "Undefeated 2016" would work!!!!!

Customer called me last night and he is absolutely on cloud 9. The 9 wins are also the first 9 times he has drove. In the past he has helped his brother with a program and decided to build his own truck. Said the last pull was on a good track and he was pulling last. His rival fell about 30ft short of the end of the track. My customer was afraid the track was tighter than he thought. Well she went to 8800 rpm and at the end had fallen to 8200 and it was a full pull.

Alpine August 7th 2016, 1:01 am

Here is his winning pull in Mountain, ND.

https://www.youtube.com/watch?v=WnNgkl2_3rs&feature=youtu.be

Sounds like they have decided to get out of pulling. This truck is for sale.

611 ci, 9000 rpm. Turn it up! - Page 2 13769604_1053020214812765_3801246055650834434_n

611 ci, 9000 rpm. Turn it up! - Page 2 13769604_1053020214812765_3801246055650834434_n

68galaxie August 30th 2016, 9:34 am

The 611 finally suffered a loss.
However, not all bad news.

The winner was a 532 BBF old A460 heads, and a new Rick Jones camshaft for motivation.
A very cool build for sure.
New camshaft and some head work made the owner very happy with the results.

http://www.yellowbullet.com/forum/showthread.php?t=1923314

Mark Miller August 31st 2016, 12:37 am

Are the guys with the 611 BBF and the 532 BBF brothers,kind of sounded like it in the link you posted?

Scott Foxwell August 31st 2016, 10:16 am

68galaxie wrote:The 611 finally suffered a loss.
However, not all bad news.

The winner was a 532 BBF old A460 heads, and a new Rick Jones camshaft for motivation.
A very cool build for sure.
New camshaft and some head work made the owner very happy with the results.

http://www.yellowbullet.com/forum/showthread.php?t=1923314

Hey, start your own thread! Very Happy

Scott Foxwell August 31st 2016, 10:16 am

Mark Miller wrote:Are the guys with the 611 BBF and the 532 BBF brothers,kind of sounded like it in the link you posted?

Yes, they're brothers.

Mark Miller September 1st 2016, 12:42 am

Scott Foxwell wrote:
Mark Miller wrote:Are the guys with the 611 BBF and the 532 BBF brothers,kind of sounded like it in the link you posted?
Yes, they're brothers.

Thanks for confirming that,i guess i'm not so stupid after all and figured that out on my own!!!! Smile

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