Re: 1973 Chevelle SS, 350, 4spd. build

by Joe73 Sat Sep 28, 2019 4:04 pm

Just an update for anyone who is looking for a 3/8" npt temp sensor for aluminum heads.

This is what I posted above,

Then onto the next item. Aluminum heads as well as later model stock heads use a 3/8" port for the factory temp sensor. Well, my 73 used 1/2" ports. I wanted to use my original temp sensor on the drivers head but it doesnt fit. And an adapter would bring it out too far. So I ordered a Sierra TS25101 (200 degree) temp switch that looks stock and will fit the 3/8" port. Sierra TS25101 is the same as Stewart Warner 83304 but way cheaper. Stewart Warner does have a 83305 that is a 220 degree switch but they want over $40 bucks for it. Dont think it was worth that. I'll be running a 180 stat so a 200 degree kick on of my factory light would be extra visual insurance for temp.

Update, temp sensor TS25101 has a single blade terminal !!! According to my 1973 service manual wiring diagram, the MANUAL and 307 cars with temp LIGHT use a TWO blade sensor. The single blade sensor I believe is for the automatic cars with temp light.

Just wanted to update you guys. And I have the TS25101 new in the box if anyone needs it.

by Joe73 Sat Sep 28, 2019 4:08 pm

I bolted the Pypes Race pros directly to the headers and support the end of them. Just so I can run the car. Dont want it sitting for long periods without running. Anyway, short video of it running in the car.

https://www.youtube.com/watch?v=pNEvZYImZz8&feature=youtu.be

by Limey SE Sat Sep 28, 2019 11:02 pm

Sounds Nice Joe

by Joe73 Mon Oct 14, 2019 7:57 pm

Car has been Demonized. Swapped the Holley 670 avenger to my Demon 750. Both with 4.5 power valve. I used my avenger for break in because I knew it ran great and wont have any issues. I went through the Demon but didnt want an issue during break in. Demon is on and running nicely. Initial timing is set at 18 at idle and 34 all in at 2000 on mechanical advance. 35 at idle and 52 at 2000 with the vacuum advance connected.

https://youtu.be/f1wYPiIzZPM

by clanceman427 Tue Oct 15, 2019 6:19 pm

Yeah Joe!! Great job!

by Joe73 Tue Oct 15, 2019 6:22 pm

Thanks

by Limey SE Tue Oct 15, 2019 8:25 pm

Yea man sounds great !!

by Joe73 Tue Oct 15, 2019 8:28 pm

Thank you.

by ant7377 Tue Oct 15, 2019 9:29 pm

Sounds great Joe. Going to see you at cruise nights next summer? Looks like it!

by Joe73 Tue Oct 15, 2019 9:38 pm

Hope so.

by bracketchev1221 Wed Oct 16, 2019 7:59 am

Go for the DOMINATOR!!!!!! A 1050 would look perfect on there!!!.

by Joe73 Wed Oct 16, 2019 8:04 am

I agree Ray. Love the look of no choke horn. Have to tackle the brake vacuum issue. Have about 11.5. Going to put in a can temporarily so I can move it in the garage. They I'm thinking of going with a gm electric vac pump with the can as a reservoir.

by bracketchev1221 Wed Oct 16, 2019 9:35 am

My 70 SS is the same way now. I have a solid roller of unknown spec in the 468?? right now and I can only get 10" on it. I do have a vacuum can on it with the powerbooster and it is good for a couple hits and then goes away. I have been looking at the vacuum pumps myself. Let me know how quiet the GM one is. Some of the ones I have seen are louder than the engine running when they cycle and I did not want that. I looked at some of the hydroboost stuff but not sure I want to go that way either. I guess when I build the new engine, I am hoping a better designed hydraulic roller will help my idle vacuum issue. I would like to go 496 as well, to help build a little more vacuum.

by Joe73 Wed Oct 16, 2019 10:29 am

Is your Chevelle an auto? I'm have have the 4 speed so I'm hoping with the can it fills quicker. I ha e a vac gauge on the previous motor and when you let off the gas in gear the vac shoots up high. So it should fill quick. I'll see how the can works out. Won't be on the road anytime soon .

by bracketchev1221 Wed Oct 16, 2019 11:20 am

Yes my car is an auto, but that is the normal response from vacuum. When the engine is at rpm, and you close the blades, vacuum should spike up high. These spikes are what will eventually be in the can. So even though your car only has 11.5", the can SHOULD be maintained at a higher vacuum. So make sure the can and fittings are tight, and you will have "acceptable" vacuum in the can. Over and above your idle vacuum.

by Joe73 Wed Oct 16, 2019 11:38 am

He's, that's what I'm thinking. And with leaving it in gear a bit longer before stopping and throttle closed it should build quick.

by Joe73 Wed Oct 16, 2019 1:55 pm

This is an interesting setup. Pump looks exactly like the GM pump. But this kit has everything including the pressure sensor to turn it off. Have to always remember not to use 3/8" fuel line for vacuum brakes. Must use 11/32" PCV vacuum hose.

Volvo 30641411

https://www.youtube.com/watch?v=i1n3bX1OirI&t=60s

by bracketchev1221 Thu Oct 17, 2019 6:53 am

Is that the part number for the kit? I watched the video and went through all the comments and couldn't find where he said what the part numbers were.

by Joe73 Thu Oct 17, 2019 7:00 am

I believe that is the kit. Just Google the number. I found the number on another forum that a guy was installing. I kind of like the pressure switch just plugging into the booster. And the pump is compact. I'd like to use factory parts for this. So many vehicles come with electric brake booster pumps nowadays.

by bracketchev1221 Thu Oct 17, 2019 7:28 am

I did find this part number too.

https://www.fcpeuro.com/products/volvo-booster-vacuum-hose-s40-v40-30616993?ads_cmpid=1608986330&ads_adid=61198898576&ads_matchtype=&ads_network=g&ads_creative=305878625160&utm_term=&ads_targetid=pla-339920692971&utm_campaign=&utm_source=adwords&utm_medium=ppc&ttv=2&gclid=Cj0KCQjwoqDtBRD-ARIsAL4pviC90qNcHYdUsDLfqxuqbGVAVc_r8UjOlXvUEQ83dw6ZKXb0RSRBeqsaArJUEALw_wcB#desc

by Joe73 Thu Oct 17, 2019 10:04 am

Seems like alot of money just for the hose and sensor. Amazon has just that hose for $105.

The volvo kit looks to be complete, pump hose, mounting bracket etc. https://www.tascaparts.com/oem-parts/volvo-vacuum-pump-30641411

Other option would be to grab a GM one on ebay and buy the vac. pressure switch for about $40. It runs in line with the hose and turns the pump off when it tops off the vacuum.

by bracketchev1221 Thu Oct 17, 2019 10:49 am

The tasca parts one was the seller I found as well. But it didn't show hose and vacuum switch. I did a quick search and came up with the picture above for the setup. I didn't even get on to amazon yet to see what they can do for any of the parts. Otherwise I had been looking at the Leeds Bandit pump setup. It was a pretty quiet setup.

by Joe73 Thu Oct 17, 2019 11:32 am

Yes, I saw that one as well. Would probably fit nicely in place of a factory EVAP canister. I'm really liking that vertical stock type pump.

by Joe73 Thu Nov 07, 2019 11:29 am

For those who might have factory manual steering. This is what the rag joint and cover look like. The cover is GM part number 414017. If I remember correctly, the GM parts manual lists it as 73-74 only. I know the Nova uses a different cover for their 74 with manual steering (its similar to the power steering covers). Just fyi.

1973 Chevelle SS, 350, 4spd. build - Page 12 Rag_jo10

1973 Chevelle SS, 350, 4spd. build - Page 12 Rag_jo11

by Joe73 Fri Nov 15, 2019 12:55 pm

First time out of the garage in 5 years. First time out of the garage with the new paint. I painted it Oct. 2016 .

https://www.youtube.com/watch?v=IGsDDJ18aqI&feature=youtu.be

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