Hot Rods XO/PP Bonneville project

Thank you Rick Steiner for this gift. Old but it works

 

I have one like that but its missing the little conical gizmo that cinches down the wheel on the post. If it didn't have internal threads I'd make one but I don't think I can cut threads with my rudimentary machinist skills.

 

Was that a hint?

 

nope - I'm just content to search. I have access to another changer.

 

https://www.carliftparts.com/product/tmr-hold-cone-tire-changers-tc108276/

 

WOW! $99. They're pretty proud of their little cone widget. Thanks for the link.

 

There are some for $85 on epay. Couldn't find a used one.

 

I spent the afternoon with Ben Kopp today, had him do some machine work for me and Dave Russell on his flywheel and a bell housing for the 302 GMC engine.
Had a great time watching a master machinist at work.
A great afternoon catching up swapping story's and hanging out.
It's a joy watching a master machinist do his thing.
I was very impressed with his work.
Thanks for a great day Ben

 

Big thank you to Phartmen
For his generous donation to the XO/PP 640 Bonneville Project. Team 640 heads to the DYNO in a couple weeks and his donation will get more hours of testing for us.
Thank you Pete, love you my HEAPS brother.

 

I did a re drill on the Chevy flywheel to fit the GMC crank and once it's bolted tight I'll drill it for 3 pins to the crank

 

How much weight did that work remove from the flywheel?

 

5 lbs total removed some from the back as well 22 lbs now was 27 lbs

 

I used 3 dowels for years helping to keep the flywheels tight on my GMC’s. Over the 45 years I have tried every crank dampener available; 10 years ago I installed a ATI Super Dampener and no longer use any dowels for the flywheel. Can’t explain it but now any engine I assemble gets one no matter what it is. I also have a redrilled Chevrolet V8 flywheel wheel in my stash which I traded. Some day it will get used I’m sure.
The original GMC’s had 3 flat paired lock ties which worked well on their nodular cast iron fly wheels. A set is on my sons engine. I have also found Pontiac flywheel cap screws with a shoulder work great.

 

Surfacing the gasket side of the torque plate

 

Just want to express my gratitude to Jimmy Six and hothead_lou both from Southern California for there support. Jimmy six donated a block and 2 cranks and hothead_lou is picking them up placing it on a palate and taking it to be shipped.
Team 640 will be forever grateful for there help and advise
Thanks JD Tone and Lewis Stands for your friendship, support and knowledge that's been so helpful in our journey of Land Speed Racing. The list of special people we have met along the way has become a long one but none will be forgotten.
Thank you all

 

I hear the 292 Chevy's have problems keeping the flywheel on also.

 

JD, was it a TCI or ATI? TCI make the Rattler, ATI makes the Super Damper. Just looking for clarification and more secrets! Lol!

 

Started working on the sheet metal intake for 3 sidedraft webers, this is the beginning using what was adapters for fuel injection. Ill post photos as it comes together, I'll start the port match and go from there.

 

Added 2 more bolts to each adapter and installed helicoils on all 12 bolt holes

 

I'd like to interject here that an intake more like on your common plenum / multi carbed Ford engine will be a better way to go than Weber IR carbs. My friend John Peto beat that horse to death running a series of both Ford and Mopar inline engines with both U-flow and crossflow heads (his wife Ann drove their altereds to two IHRA national championships). Before he abandoned Weber side drafts completely he had worked his way all the way up to the very rare 58 mm size and had long discussions with the Weber factory about how to get them to work on a big 300+ ci engine. In the end it was three Holley 2300 series 2Vs that provided the best performance, on a common plenum that eventually had him turning quarter mile times in the 7-second range.
Good luck with your new engine combo.

 

I know it not HAMB friendly but—- look at modern EFI LS motor with throttle body & injection at each port, tuned with oxygen sensor & exhaust temp. Good luck

 

The plan is to make a medium size plenum sheet metal intake system that will have a common plenum for all three webers. I'll be working on the runner lengths math next and a more precise plenum size for the RPM where we will be running the engine..
All of this has to also work with the header style and length.
It's a long process even with modern Dyno simulation programs to look for a really good combination. But we will get it to perform in the end

 

A little port matching before and after photos

 

Again thank you jimmy six and hothead_lou for your generosity to team 640. Donated parts and shipping assistance. Thanks lou for such a well done job of packaging these parts.
I enjoy my conversations with Jimmy six about the GMC 302 engine technology he has developed over the years. Thank you JD

 

Packaged like he wanted it to actually make it there!

 

Laying out the carb placement and general configuration for the plenum box more photos as it comes together

 

Looks like they couldn't get a bigger throttle plate in those.
Aren't these carburetors more suited for an IR intake system?

 

There no different than any other carburetor other than they are a sidedraft style unit that's why some people use them on IR setups.
My particular intake design ( balanced plenum) is designed to work in the RPM range that is most beneficial at wide open throtal only.
I have designed and built several of these intake systems for wide open throtal racing and do not work well for other than that.

 

Making some pcs for the intake, I'll post more photos as the pcs come together then you will know what they will become

 

We cannot run EFI in XO or XXO – both vintage engine classes. Only blown or naturally aspirated with carbs or mechanical fuel injection. But we do run an O2 sensor with an air/fuel gauge.