Planning a new 383 build that is now going to be a 400

busterrm said:
Am I right on the CC's, .006 = 1cc of volume in a 64cc chamber heads?
Click to expand...
You are correct.
I surfaced my heads the same way, except I made figure 8s. They looked good and had an even pattern.
When the machine shop checked them, they said they have to be cut. They removed <.005" to clean them up.
Nice looking heads. Who makes them?
 
Wow, those look really good, I'm surprised that they came out looking so
good by hand!!!

busterrm said:
Am I right on the CC's, .006 = 1cc of volume in a 64cc chamber heads?
Click to expand...
That's the formula that works for a 70 cc chamber, yours would be slightly
less, but should be a good approximation.

busterrm said:
I did this to both heads, then took a measurement once I was satisfied with the surface, I did it on the other head until I had removed the same amount from both heads.
Click to expand...
Did you use any lubrication? Do you have a link or more info about the sandpaper
you used, others will want to know? I might point out that some gasket companies
want a particular RA for the gaskets to work their best.

You have a nearly identical DCR/SCR, hope you don't have the same problem I'm
having. Maybe you can get 93 octane gasoline. Maybe you just won't have the same
problem anyway with many many variables that apply to detonation.
 
There is also water- methanol injection.
Snow Performance .
I installed last summer on a Vortech Supercharged 5.0 with 700 rear wheel hp .
Drops IAT temps fast.
Also kits are made for carbs. $600 to buy the kit.
I haven't had an issue with Detonation since lowering water temps to 140-160 F with a Water Restrictor plate.
Zero Blow by.
Quit burning oil.
The Olds 425 will run on 87 octane gas now . Drive anywhere .
Tested the other day to 120 mph.
A- Ok.
 
35 BTDC Total ignition timing dialed in.
All in by 1,800 crankshaft RPMS.
 
Cost was Free.
I bought the Moroso water restrictor plate kit for $7.99 back in 2004.
 
I did it dry Rick! I don't know the brand of paper I used, I bought it at Lowe's. I just checked the marble with aluminum straight edge and it was perfect. I just counted the times I ran the head across it in each direction, then switched to the other head. Measured them then did more until I had the entire surface clear. Went to the next grit of paper, repeated, then to the last grit of paper.
It took about two hours to do both heads, I spent about 15 bux on sandpaper and 3M adhesive, the marble slab is a loaner from friend. I used 80/150/220 grit paper, I stuck the paper along parallel edges of the paper for the 80 and 150, did both heads, flipped the marble and stuck the 220 and finished them. Patience is important, I took my time doing it.
 
Indycars said:
Wow, those look really good, I'm surprised that they came out looking so
good by hand!!!


That's the formula that works for a 70 cc chamber, yours would be slightly
less, but should be a good approximation.


Did you use any lubrication? Do you have a link or more info about the sandpaper
you used, others will want to know? I might point out that some gasket companies
want a particular RA for the gaskets to work their best.

You have a nearly identical DCR/SCR, hope you don't have the same problem I'm
having. Maybe you can get 93 octane gasoline. Maybe you just won't have the same
problem anyway with many many variables that apply to detonation.
Click to expand...
I will use the 93 octane we have here and put in some lucas octane booster. My rpms are probably going to higher since I am not going to use overdrive.
 
If you finish with 600 grit it will be even smoother finished and shine Bob.
Optional.
I use 600 3M Wet & Dry.
Once you move up to 800-2000 grit the paper loads up fast.
Not so effective .
 
I use a Long Rubber Bluepoint Snap On Hard Rubber sanding block.
About 14 inches long.
 
Hey guys did some more on my engine, I have the heads and intake back on it, remounted the wires, distributor, headers. Pulled it of the engine stand to mount the flexplate so I can bolt on the starter and get back bracket fabbed up to fit the mini starter. I guess I have a weird dipstick the hole in the block is too big so it flops, so I made a small bracket and tied it to the block, I had to straighten it too it was hitting plugs and headers. Here are a few pictures.
dipstick.jpg dipstick2.jpg starter bracket finished.jpg

dipstick2.jpg

starter bracket finished.jpg
 
Looks Great Bob.
Should be ready to install into your Nova when ready to.
 
It looks like one of these would have also worked to hold the dipstick tube.
If yours is on the passenger side, then the rotation of the crank can throw up the tube.
Be sure to use a sealer where the tube goes into the hole in the block, or your starter takes an oil bath.
clamps.jpg
 
I got the dipstick and starter bracket painted. I went to Lowes to get some wire and connectors to reroute the starter wires and battery lead. I am running them forward to the front of the block and around the valve cover and up and along the intake to keep them away from the header. I have had problems in the past with those wires getting burned.
painted dipstick .jpg

painted bracket new starter wires .jpg

new wiring1.jpg

new wiring2.jpg

new wiring3.jpg

new wiring4.jpg

If the weather cooperates with me, I will probably install the engine tomorrow at the earliest. Here are some pics of the engine on the hoist ready to go in. Also some pictures of the motor mounts I fabricated to eliminate the OEM buckets and also the midmounts to be tied to the transmission. So If all goes well, with the engine mounted solidly I may fire it soon.

ready to go in.jpg

driver side front mount.jpg

driver side midmount1.jpg

driver side midmount2.jpg
 
Nice Bob.
You bought the Hayden 7-blade Engine.
Team Chevelle & Camaro Forums says they are excellent .
I bought the Flex-A-Lite 7-blade Fan.
18" diameter .
 
87vette81big said:
Nice Bob.
You bought the Hayden 7-blade Engine.
Team Chevelle & Camaro Forums says they are excellent .
I bought the Flex-A-Lite 7-blade Fan.
18" diameter .
Click to expand...
That actually is the OEM fan blade, but it is a Hayden, think its 17 inch.
 
I am trying to compile Factory GM Flex Fans & Clutch Fans.
Very few photos exist.
That 7-blade Fan will keep the 400 ci SBC Nova Cool in Texas Heat.
 
I did not know it was a Hayden until I blasted it before painting, blasting uncovered the name on the back.
 
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