400/450 stroker....Cheap parts, lotta work.

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I'm not one to make a lot of recommendations.

I just try to report on what I do...........so then...........what I do...........is buy chamfered main bearings.

And when I mock things up I have everything as clean as if I was doing the final assembly.
 
IQ52 said:
I'm not one to make a lot of recommendations.

I just try to report on what I do...........so then...........what I do...........is buy chamfered main bearings.
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Thank you sir !
 
Of course some of us find the work a little more difficult because we're forced to do the whole thing using our.............

CHUBBY FINGERS!

Right Rob?
 
Because I'm making the plug wires today I thought I should use the headers Cody built for the '72 Demon. Looks the wires will fit the headers for the car and the dyno headers in the background too.

400-450 headers 004.JPG
 
IQ52 said:
Just a quick thing that I had to rediscover when doing a prelube.....To oil the 1,3,5,7 rockers (left bank) you need to be on #8 TDC (fire). To oil the right bank rockers (2,4,6,8) you need to be on #6 TDC (fire). Now I must clean the oil off the shop floor and then crawl around in the irrigation ditch to measure for the new mainline offset. Oh Joy!

View attachment 1715726567
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I agree that paint looks terrific! Do you clean the block with something like brake cleaner to clean off the grease before painting?
 
Must chose a carburetor to start with. In keeping with the theme there is the 4150 from Dad's NASCAR days in the 1970's. It is a Murry Jensen modified Holley DP with 1.400" venturies and 1.680 throttle bores. This carburetor took the 424ci stroker to right at 600 HP so we'll start with it and maybe swing to the 850 Mighty Demon and the 1050 cfm Demon RS later.

400-450 Jensen carb 002.JPG
 
Ricks70Duster340 said:
I agree that paint looks terrific! Do you clean the block with something like brake cleaner to clean off the grease before painting?
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Yes we are cheap around here. Spray carburetor cleaner on any oily spots and then blow dry with air.
 
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IQ52 said:
Must chose a carburetor to start with. In keeping with the theme there is the 4150 from Dad's NASCAR days in the 1970's. It is a Murry Jensen modified Holley DP with 1.400" venturies and 1.680 throttle bores. This carburetor took the 424ci stroker to right at 600 HP so we'll start with it and maybe swing to the 850 Mighty Demon and the 1050 cfm Demon RS later.

View attachment 1715749908
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Was this Murry from Fuel Curve Engineering back in the day??
 
IQ52 said:
Of course some of us find the work a little more difficult because we're forced to do the whole thing using our.............

CHUBBY FINGERS!

Right Rob?
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Well......my problem IS just a little different. My fingers aren't chubby, just BIG and LONG because I have caveman hands. Something I really suffered with as a mechanic in a Toyotee dealership. I still struggle with it on old stuff sometimes. But my fingers aren't chubby......like some folks. lol
 
RustyRatRod said:
Well......my problem IS just a little different. My fingers aren't chubby, just BIG and LONG because I have caveman hands. Something I really suffered with as a mechanic in a Toyotee dealership. I still struggle with it on old stuff sometimes. But my fingers aren't chubby......like some folks. lol
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caveman ? or more lady like. :lol:
 
ou812 said:
Was this Murry from Fuel Curve Engineering back in the day??
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Okay. Did a quick research and it was Murray Jensen. Since Pop was building 357 ci NASCAR engines out of California it was probably the same Murray Jensen at Fuel Curve Engineering.

Some place we have a picture of him leaning over a carburetor at full throttle with his hair streaming down the side of his face toward the carburetor.

There is a small article in memory of him at the very beginning of the 2004 Edelbrock Catalog.
 
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Fired it up and broke it in yesterday. Said to my son, "Let's make a pull!"

To which he said, "Shouldn't you change the valve springs first?"

Kid is worth his weight in gold!
 
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IQ52 said:
Okay. Did a quick research and it was Murray Jensen. Since Pop was building 357 ci NASCAR engines out of California it was probably the same Murray Jensen at Fuel Curve Engineering.

Some place we have a picture of him leaning over a carburetor at full throttle with his hair streaming down the side of his face toward the carburetor.

There is a small article in memory of him at the very beginning of the 2004 Edelbrock Catalog.
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Murray was an awesome guy...very helpful! He did a carb for me back around 89' for my 69 440 Charger...I was 17. Then they moved and never heard from him again.
 
This is stupid crazy. Antler hunters, pipe fitters, pipe welders, heavy equipment repair welders and animal art welders are building 450 pump gas stroker engines. No wonder the poor engine is only making 530 lb-ft and 528 hp right now.

Well.......it's only another hobby. What do you expect?
 
Days ago while I was changing jets on the 450 for another run a friend showed up who had never witnessed a dyno run. Had him stand just behind my left shoulder while we made the pull.

Afterwards I looked back to get his impression.

Not there...........he was twenty feet away across the shop hunched down some with big wide eyes.

"I thought it was going to blow up!"
 
IQ52 said:
Days ago while I was changing jets on the 450 for another run a friend showed up who had never witnessed a dyno run. Had him stand just behind my left shoulder while we made the pull.

Afterwards I looked back to get his impression.

Not there...........he was twenty feet away across the shop hunched down some with big wide eyes.

"I thought it was going to blow up!"
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LOL...yup. They would like they are ready to grenade and frag anyone within 50 feet of it. The boss had some old Ford on the chassis dyno one day and they made a couple of easy, quick pulls on it. This thing was put together for some class at Bonneville and it was a flat head 4 with some seriously expensive parts on it.

The owner did some physical checks of stuff and he jumps back it the car and they let it rip. Right at the end of the pull two rods let loose and it was spectacular. There was pieces flying all around, water and oil gushing out and a ton of noise. Maybe 1 second later the engine was off and it was almost was quiet. All you could hear was the dyno slowing and some parts still banging around and hitting the floor.

I felt bad for the guy, and of course he blamed the dyno for breaking his engine. Wish that one was on video. He didn’t get charged for the dyno time.

It was one of those sad things that was still incredible to see.
 
IQ52 said:
Days ago while I was changing jets on the 450 for another run a friend showed up who had never witnessed a dyno run. Had him stand just behind my left shoulder while we made the pull.

Afterwards I looked back to get his impression.

Not there...........he was twenty feet away across the shop hunched down some with big wide eyes.

"I thought it was going to blow up!"
Click to expand...

Sounds like he knows yall's engine building abilities well. HAHAHAHAHAHHA
 
RustyRatRod said:
Sounds like he knows yall's engine building abilities well. HAHAHAHAHAHHA
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Dog gone it you can make me laugh!

A neighbor is coming over tomorrow to watch the engine run. Kinda interested to see his reaction as he's never see a dyno pull in person.
 
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