[i82much]

Originally Posted by Dragncar

Nah, the stroker I am building is going to rip the head off this thing. If thats a nerd then I am a nerd.
That is the thing about making one of your builds very public. Folks will give their opinions because the builder obviously wanted them to. He made it public. Have a thick skin.

yeah well you should see the girl i am gonna pick up at the bar next week

[Formulajones]

LOL

[Dragncar]

Originally Posted by i82much

yeah well you should see the girl i am gonna pick up at the bar next week

Nerds rule !

[slowbird]

Originally Posted by Dragncar

Nah, the stroker I am building is going to rip the head off this thing. If thats a nerd then I am a nerd.
That is the thing about making one of your builds very public. Folks will give their opinions because the builder obviously wanted them to. He made it public. Have a thick skin.

You have been talking about this build of yours for a very long time, is there an end in sight? I believe you've said you are not going to dyno it so how will we know if it "rips the head off this thing"?

[dragracerx2813]

Originally Posted by ta man

Like a 80 Trans Am with 308 gears?

It would be nice in a 80:trans Am with 308 gears. Or a 66 Bonneville with 2.73 gears.

[andy kelleman]

I have read some of this post I have some thing similar it’s in our 73 Ventura bracket car 501 was originally built as a pump gas motor 455 060 over 4.5 crank 310 Cnc Kaufman d port heads comp hyd roller small 230 -240 duration 530 540 lift roller rockers vacuum pump 11,3 comp etc dyno 525hp 600 lb tq @ 5000 rpm big broad tourqe band car weighs 3250 w/ driver ran 10.60 @ 125/126 mph 850 Holley 3.73 rear switched over to methonal 1050 Holley victor manifold goes 10.19 130 at Norwalk we have run the car for several years very pleased with the power and the low maintenance this motor has delivered it would be bad ass in a street car like a full size or gto / lemans tempest crazy low end power

[Dragncar]

Originally Posted by slowbird

You have been talking about this build of yours for a very long time, is there an end in sight? I believe you've said you are not going to dyno it so how will we know if it "rips the head off this thing"?

I have been collecting a lot of high end Pontiac parts for a long time. Extra money stopped for a few years. Now I have plenty of money for it, just not the time. 40 hours per in OT the least few months each check.
Its all about time now so I have to force myself to work on it. Its going to be running this spring one way or another. I might dyno it, Westech. It would be a blast.
But even if I don,t track numbers will leave this thing in the dust.
This engine is a very good street engine. Mine has a different end goal.
And yes I am looking to hurt some feelings with it. If I do, great. If not, I don,t build engines for a living but I will keep at it.
Its only money right ? And we all spend too much of it on this stuff.
I

[Stan Weiss]

Originally Posted by andy kelleman

I have read some of this post I have some thing similar it’s in our 73 Ventura bracket car 501 was originally built as a pump gas motor 455 060 over 4.5 crank 310 Cnc Kaufman d port heads comp hyd roller small 230 -240 duration 530 540 lift roller rockers vacuum pump 11,3 comp etc dyno 525hp 600 lb tq @ 5000 rpm big broad tourqe band car weighs 3250 w/ driver ran 10.60 @ 125/126 mph 850 Holley 3.73 rear switched over to methonal 1050 Holley victor manifold goes 10.19 130 at Norwalk we have run the car for several years very pleased with the power and the low maintenance this motor has delivered it would be bad ass in a street car like a full size or gto / lemans tempest crazy low end power

Can you explain what that statement means? 525 HP @ 5000 RPM is not 600 torque.

Stan

[Dragncar]

Sounds like 525 HP, also making 600lbs tq @ 5000 RPM to me.
Nice street engine. And going 10.19 to boot.

[PAUL K]

Originally Posted by slowbird

You have been talking about this build of yours for a very long time, is there an end in sight? I believe you've said you are not going to dyno it so how will we know if it "rips the head off this thing"?

Originally Posted by Dragncar

This engine is a very good street engine. Mine has a different end goal.
And yes I am looking to hurt some feelings with it. If I do, great. If not, I don,t build engines for a living but I will keep at it.
Its only money right ? And we all spend too much of it on this stuff.
I

Hurting feelings with a Pontiac is the best! I hope it happens for you. I quit often have customers walk in the door wanting to beat "so & so". I usually advise against it. My thoughts are if one builds an engine to beat a specific person, if you fail to achieve that goal your project has become a failure. The best thing to do is build it the best you can and enjoy it... If that happens your project will be a success.

A hobbyist has a lot of advantages over a "Professional" engine builder, the main thing is time. The hobbyist can spend as much time as they care to, researching every part and procedure. Shoot in another thread, it was mentioned a guy building his own engine had three professionals involved in tightening his rod bolts. That seems completely ridiculous, especially considering the particular rods being discussed came with specific instructions and the specific lube for the bolts. But at the end of the day it seems like the bolts were fastened properly.

I haven't commented on the engine in this thread because I have no information on the builders specific goals. The numbers are what they are and it's always easy to speculate what changes could have been made to make it better, but sometimes those guesses don't always pan out. Regardless the engine makes enough power to make ninety percent of the hobbyists happy..... Very happy.

Slowbird recently built an engine for his father's street car. He put it together at my shop and started on it right after Labor day. He assembled the engine, installed it and had the car at the track in about three weeks. He ran some good numbers for a first outing. There is no reason an engine project should take two decades to complete. That would actually make it several uncompleted projects with a lot of mind changing along the way... Not that there is anything wrong with that. This is a hobby for most of us.

We should all be happy a Pontiac engine got some coverage. One thing for sure the engine in this thread should not have an issue with the connecting rods.

[Stan Weiss]

Originally Posted by Dragncar

Sounds like 525 HP, also making 600lbs tq @ 5000 RPM to me.
Nice street engine. And going 10.19 to boot.

Only problem is in the real work it does not work like that.

600 torque @ 5000 RPM = 571.2 HP

525 HP @ 5000 = 551.5 Torque

Stan

[Steve C.]

Stan,
Note the comments here in post number 37.

Presume this is Andy Kelleman's first engine combo (note- the link no longer goes to the dyno run ).

Also note I asked Andy a few questions regarding the build after that post. He replied.

https://forums.maxperformanceinc.com...=810005&page=2

And for those interested this thread I started is about another 4.500" stroke build By Rocky Rotella. Not intended for a high HP build but for a very streetable torque monster !

https://www.motortrend.com/how-to/47...-inch-pontiac/


.


.

[Stan Weiss]

Originally Posted by Steve C.

Stan,
Note the comments here in post number 37.

Presume this is Andy Kelleman's first engine combo (note- the link no longer goes to the dyno run ).

Also note I asked Andy a few questions regarding the build after that post. He replied.

https://forums.maxperformanceinc.com...=810005&page=2

And for those interested this thread I started is a about another 4.500" stroke build By Rocky Rotella. Not intended for a high HP build but for a very streetable torque monster !

https://www.motortrend.com/how-to/47...-inch-pontiac/

Originally Posted by Steve C.

Of interest, another 4.500 stroke low rpm street build. Not to detract from Rocky's 495 CID build but to aid as a comparison for conversation.

Note it used a rated "850 cfm" carburetor, however at peak power the SCFM was a lower 622. And a larger 236 degree hydraulic roller cam in use. Also note the power band of Rocky's 495 CID engine is wider in the range of operating speeds under which the engine is able to operate efficiently. A 1400 rpm spread between peak torque RPM and peak power RPM. Whereas the 501 CID engine as presented here has a narrow 800 RPM spread. However it was reported they didn’t have the luxury of spending additional dyno time for fine tuning or experimentation.

Max power was recorded at 525.4 HP at 4900 rpm, and max torque was 604.8 lb-ft at 4100 rpm. SCFM at max HP was 622.

In short:

455 block

4.210 bore

4.500 stroke

6.7 rods

Ported KRE d-port heads

Comp XR288HR 236/242-110

Hurricane single-plane intake

Holley 850 cfm Ultra XP carburetor

Hooker Super Comp headers, 1.750” primary tubes and 3” collectors.

https://theshopmag.com/features/pontiac-501-dyno-run

.

Steve,
Thanks. The highlighted line in your other post I quoted. Show what I was asking about.

Stan

[Steve C.]

Stan
It seems that 501 build by Mike Mavrigian at Precision Engine Tech is no longer available. Noted was the use of a small 236 degrees duration cam. Also noted in the article it used Comp 995 valve springs used with the hydraulic roller cam.
I questioned the low 4900 rpm and thus brought up the subject if due to inadequate spring pressure the engine was noseing over at rpm on the dyno. That was not determined in conversation.

Comments made in the article regarding the engine....

"Budget-wise, I didn’t have the luxury of spending additional time on Ross’s dyno for fine tuning or experimentation with different intake manifolds, timing setups, carb adjustments or cams. In the short time we spent that day, our peak horsepower was recorded at 525.4 HP at 4900 rpm, and peak torque was a whopping 604.8 lb-ft at 4100 rpm, with timing set at 36 degrees. Obviously, the valvetrain and bottom end is certainly capable of handling much higher rpm. We strongly felt that with more cam duration and experimenting with larger-volume intake manifold runners, the rpm band would move upwards, and obtaining very close to 600 HP would be realistic. However, for the first time out of the gate, we felt that this session was very successful. She’s definitely a stump puller."


.

[Stan Weiss]

Just a guess on my part.

Stan

[andy kelleman]

Steve not my first Pontiac but my first stroked Pontiac sorry for the confusion on hp and torque numbers I have a copy of dyno sheet at my shop I will find it and get my wife to help me post as for nosing over at 4900 no it pulls just past 6000 it just makes me wonder what it would do with a bigger camshaft since it is in a race car not a street car but I keep telling my self it would be sweet in a 68 gto for street use

[Steve C.]

Thanks Andy. Sorry for any confusion on my part.

With the dyno numbers please reaffirm the engine specifications.


.

[andy kelleman]

Steve c this is the paper work I received with the motor I got from mike m I do not have flow numbers for the kaufman heads I will be interested in hearing what every one thinks I just know for a street build it works great for a bracket motor
Here’s pages 1 - 5

[andy kelleman]

Pages 6 - 10

[andy kelleman]

Pages 11 and 12.