New 440 SBC Done!
01-21-2018, 02:42 PM
#1
Safety Car
Thread Starter
New 440 SBC Done!
After many upgrades, and some repairs, I finally got my car back yesterday. (Can't get YouTube link to upload correctly).......OK, got it now.....
New engine test run........
New engine test run........
Last edited by C3 Stroker; 01-21-2018 at 02:44 PM.
01-21-2018, 04:32 PM
#3
Team Owner
Is this what you have and did the bore not clean up at .030 over bore?
Calculate Cubic Inch Displacement of Your Engine
Calculate CID
Enter The Bore: 4.185
Enter The Stroke: 4.0
Enter Number of cylinders: 8
Calculate
Engine is 440.18 CID or 7.2 liters
Calculate Cubic Inch Displacement of Your Engine
Calculate CID
Enter The Bore: 4.185
Enter The Stroke: 4.0
Enter Number of cylinders: 8
Calculate
Engine is 440.18 CID or 7.2 liters
01-21-2018, 06:34 PM
#4
Dr. Detroit
Member Since: Mar 2012
Location: New Braunfels Texas
Posts: 9,962
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Sounds happy 
Jebby
Jebby
01-21-2018, 07:26 PM
#7
Race Director
Member Since: Jan 2000
Location: Corsicana, Tx
Posts: 12,603
Received 1,874 Likes
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2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
You're going to have some fun!!
JIM
JIM
01-21-2018, 10:36 PM
#10
Safety Car
Thread Starter
Yep, went way over budget....
This is a new engine, not my previous 427 with overbore, built for me by Box Performance. They videoed the test run for me. I didn't originally plan a new engine, but one thing led to another. I took the car in to repair a bad "thunk" which happened when I shifted from Park into Drive. I mean a LOUD HARSH boom.
Gary Box took a listen, and said it sounds like the rear end, even though it felt like the trans. Which ever it was, he said he could get to the bottom of it, whatever had to be taken apart. Well, Box Performance kinda specializes in Vettes (he owns the Boxvette, see it on Street Outlaws this month), and his shop does everything from engines to full restorations. My thanks to Box Performance.
Well, here was my opportunity for "one stop shopping" and "while I'm at it" action. I recovered some money by selling my 427 sb and putting it toward a new 440" sbc.
The loud clunk turned out to be a bad posi unit. (It was ruined, Gary said). So a new Yukon posi was installed..........and a new engine build started.
While the rear end was out, "might as well install a new aluminum diff cover". Also, why not a new VBP 420 lb. spring......also heim joint strut rods.....
And since the engine was out, why not a new Borgeson steering box........heck, the engine's out, now is good time to get a paint job....
And since the engine's being upgraded, time to upgrade the fuel line to 1/2" braided from tank to carb to handle the added horsepower.......
I'll have to update my sig engine specs, but some info:
Motown Block - (Box specs, with added beefiness)
- 4.185 bore x 4.00 stroke
Heads - Dart PRO1 245 CNC/66cc (Box CNC program, flows a
true 340 cfm intake, 255 cfm exh., 2.125 intake).
Comp ratio - 11.0:1
Cam - Box custom solid roller (made by Crower, he's kinda
secretive of his specs, but think 260'ish @ .050, and
.700 lift. This is one of his milder cams, since this is a
street car.)
Carb - ProSystems 1000 cfm.
Gary Box took a listen, and said it sounds like the rear end, even though it felt like the trans. Which ever it was, he said he could get to the bottom of it, whatever had to be taken apart. Well, Box Performance kinda specializes in Vettes (he owns the Boxvette, see it on Street Outlaws this month), and his shop does everything from engines to full restorations. My thanks to Box Performance.
Well, here was my opportunity for "one stop shopping" and "while I'm at it" action. I recovered some money by selling my 427 sb and putting it toward a new 440" sbc.
The loud clunk turned out to be a bad posi unit. (It was ruined, Gary said). So a new Yukon posi was installed..........and a new engine build started.
While the rear end was out, "might as well install a new aluminum diff cover". Also, why not a new VBP 420 lb. spring......also heim joint strut rods.....
And since the engine was out, why not a new Borgeson steering box........heck, the engine's out, now is good time to get a paint job....
And since the engine's being upgraded, time to upgrade the fuel line to 1/2" braided from tank to carb to handle the added horsepower.......
I'll have to update my sig engine specs, but some info:
Motown Block - (Box specs, with added beefiness)
- 4.185 bore x 4.00 stroke
Heads - Dart PRO1 245 CNC/66cc (Box CNC program, flows a
true 340 cfm intake, 255 cfm exh., 2.125 intake).
Comp ratio - 11.0:1
Cam - Box custom solid roller (made by Crower, he's kinda
secretive of his specs, but think 260'ish @ .050, and
.700 lift. This is one of his milder cams, since this is a
street car.)
Carb - ProSystems 1000 cfm.
Last edited by C3 Stroker; 01-21-2018 at 10:47 PM. Reason: Added info
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worship79 (01-27-2018)
01-21-2018, 11:12 PM
#12
Race Director
This is a new engine, not my previous 427 with overbore, built for me by Box Performance. They videoed the test run for me. I didn't originally plan a new engine, but one thing led to another. I took the car in to repair a bad "thunk" which happened when I shifted from Park into Drive. I mean a LOUD HARSH boom.
Gary Box took a listen, and said it sounds like the rear end, even though it felt like the trans. Which ever it was, he said he could get to the bottom of it, whatever had to be taken apart. Well, Box Performance kinda specializes in Vettes (he owns the Boxvette, see it on Street Outlaws this month), and his shop does everything from engines to full restorations. My thanks to Box Performance.
Well, here was my opportunity for "one stop shopping" and "while I'm at it" action. I recovered some money by selling my 427 sb and putting it toward a new 440" sbc.
The loud clunk turned out to be a bad posi unit. (It was ruined, Gary said). So a new Yukon posi was installed..........and a new engine build started.
While the rear end was out, "might as well install a new aluminum diff cover". Also, why not a new VBP 420 lb. spring......also heim joint strut rods.....
And since the engine was out, why not a new Borgeson steering box........heck, the engine's out, now is good time to get a paint job....
And since the engine's being upgraded, time to upgrade the fuel line to 1/2" braided from tank to carb to handle the added horsepower.......
I'll have to update my sig engine specs, but some info:
Motown Block - (Box specs, with added beefiness)
- 4.185 bore x 4.00 stroke
Heads - Dart PRO1 245 CNC/66cc (Box CNC program, flows a
true 340 cfm intake, 255 cfm exh., 2.125 intake).
Comp ratio - 11.0:1
Cam - Box custom solid roller (made by Crower, he's kinda
secretive of his specs, but think 260'ish @ .050, and
.700 lift. This is one of his milder cams, since this is a
street car.)
Carb - ProSystems 1000 cfm.
Gary Box took a listen, and said it sounds like the rear end, even though it felt like the trans. Which ever it was, he said he could get to the bottom of it, whatever had to be taken apart. Well, Box Performance kinda specializes in Vettes (he owns the Boxvette, see it on Street Outlaws this month), and his shop does everything from engines to full restorations. My thanks to Box Performance.
Well, here was my opportunity for "one stop shopping" and "while I'm at it" action. I recovered some money by selling my 427 sb and putting it toward a new 440" sbc.
The loud clunk turned out to be a bad posi unit. (It was ruined, Gary said). So a new Yukon posi was installed..........and a new engine build started.
While the rear end was out, "might as well install a new aluminum diff cover". Also, why not a new VBP 420 lb. spring......also heim joint strut rods.....
And since the engine was out, why not a new Borgeson steering box........heck, the engine's out, now is good time to get a paint job....
And since the engine's being upgraded, time to upgrade the fuel line to 1/2" braided from tank to carb to handle the added horsepower.......
I'll have to update my sig engine specs, but some info:
Motown Block - (Box specs, with added beefiness)
- 4.185 bore x 4.00 stroke
Heads - Dart PRO1 245 CNC/66cc (Box CNC program, flows a
true 340 cfm intake, 255 cfm exh., 2.125 intake).
Comp ratio - 11.0:1
Cam - Box custom solid roller (made by Crower, he's kinda
secretive of his specs, but think 260'ish @ .050, and
.700 lift. This is one of his milder cams, since this is a
street car.)
Carb - ProSystems 1000 cfm.
Me thinks you'll have to change your avatar. 
How soon do you think you'll have it rolling again?
01-22-2018, 01:05 AM
#14
Team Owner
Possible problem might be the 420 rear spring. I had vb&p make a custom 520 to control rear squat even with my qa1s dual adjustable shocks turned up
invest in a valve spring pressure checker. I replace my springs about every year. With. 685/.714 with m y dart 2.10/1.625 manly proflow valves
is your motown the new raise cam block?
invest in a valve spring pressure checker. I replace my springs about every year. With. 685/.714 with m y dart 2.10/1.625 manly proflow valves
is your motown the new raise cam block?
Last edited by gkull; 01-22-2018 at 01:19 AM.
01-22-2018, 07:59 AM
#16
Le Mans Master
Classic example of the epic "snowball effect"...LOL Go in for a posi unit, come out with a new engine and paint job...LOL
New combo sounds like it'll be real nasty.... That outta be good for 675-700hp I'd guess? You may be able to sneak in the 9s with that power, especially as light as your car is...
.
New combo sounds like it'll be real nasty.... That outta be good for 675-700hp I'd guess? You may be able to sneak in the 9s with that power, especially as light as your car is...
.
01-22-2018, 03:02 PM
#18
Safety Car
Thread Starter
Possible problem might be the 420 rear spring. I had vb&p make a custom 520 to control rear squat even with my qa1s dual adjustable shocks turned up
invest in a valve spring pressure checker. I replace my springs about every year. With. 685/.714 with m y dart 2.10/1.625 manly proflow valves
is your motown the new raise cam block?
invest in a valve spring pressure checker. I replace my springs about every year. With. 685/.714 with m y dart 2.10/1.625 manly proflow valves
is your motown the new raise cam block?
Block is the Motown II, but not the raised cam version.
Last edited by C3 Stroker; 02-16-2018 at 02:49 PM.
01-22-2018, 09:34 PM
#19
Safety Car
Thread Starter
The snowball continued........
........when searching for the original problem, the transmission was disassembled first to check if OK.......it was. But now that it was completely apart, why put it back the same?.....no extra labor, right?...... Yes, a racing transmission was then built with heaviest duty everything, extra clutches, and a reverse manual valve body. Good for 1000 hp. The same trans Box uses in his race applications. OH YEAH!
Snowball 2.0..........now that meant a new torque converter was now necessary, to match the new combo........
Snowball 2.0..........now that meant a new torque converter was now necessary, to match the new combo........
01-23-2018, 07:30 AM
#20
Dr. Detroit
Member Since: Mar 2012
Location: New Braunfels Texas
Posts: 9,962
Received 3,891 Likes
on
2,563 Posts
This is a new engine, not my previous 427 with overbore, built for me by Box Performance. They videoed the test run for me. I didn't originally plan a new engine, but one thing led to another. I took the car in to repair a bad "thunk" which happened when I shifted from Park into Drive. I mean a LOUD HARSH boom.
Gary Box took a listen, and said it sounds like the rear end, even though it felt like the trans. Which ever it was, he said he could get to the bottom of it, whatever had to be taken apart. Well, Box Performance kinda specializes in Vettes (he owns the Boxvette, see it on Street Outlaws this month), and his shop does everything from engines to full restorations. My thanks to Box Performance.
Well, here was my opportunity for "one stop shopping" and "while I'm at it" action. I recovered some money by selling my 427 sb and putting it toward a new 440" sbc.
The loud clunk turned out to be a bad posi unit. (It was ruined, Gary said). So a new Yukon posi was installed..........and a new engine build started.
While the rear end was out, "might as well install a new aluminum diff cover". Also, why not a new VBP 420 lb. spring......also heim joint strut rods.....
And since the engine was out, why not a new Borgeson steering box........heck, the engine's out, now is good time to get a paint job....
And since the engine's being upgraded, time to upgrade the fuel line to 1/2" braided from tank to carb to handle the added horsepower.......
I'll have to update my sig engine specs, but some info:
Motown Block - (Box specs, with added beefiness)
- 4.185 bore x 4.00 stroke
Heads - Dart PRO1 245 CNC/66cc (Box CNC program, flows a
true 340 cfm intake, 255 cfm exh., 2.125 intake).
Comp ratio - 11.0:1
Cam - Box custom solid roller (made by Crower, he's kinda
secretive of his specs, but think 260'ish @ .050, and
.700 lift. This is one of his milder cams, since this is a
street car.)
Carb - ProSystems 1000 cfm.
Gary Box took a listen, and said it sounds like the rear end, even though it felt like the trans. Which ever it was, he said he could get to the bottom of it, whatever had to be taken apart. Well, Box Performance kinda specializes in Vettes (he owns the Boxvette, see it on Street Outlaws this month), and his shop does everything from engines to full restorations. My thanks to Box Performance.
Well, here was my opportunity for "one stop shopping" and "while I'm at it" action. I recovered some money by selling my 427 sb and putting it toward a new 440" sbc.
The loud clunk turned out to be a bad posi unit. (It was ruined, Gary said). So a new Yukon posi was installed..........and a new engine build started.
While the rear end was out, "might as well install a new aluminum diff cover". Also, why not a new VBP 420 lb. spring......also heim joint strut rods.....
And since the engine was out, why not a new Borgeson steering box........heck, the engine's out, now is good time to get a paint job....
And since the engine's being upgraded, time to upgrade the fuel line to 1/2" braided from tank to carb to handle the added horsepower.......
I'll have to update my sig engine specs, but some info:
Motown Block - (Box specs, with added beefiness)
- 4.185 bore x 4.00 stroke
Heads - Dart PRO1 245 CNC/66cc (Box CNC program, flows a
true 340 cfm intake, 255 cfm exh., 2.125 intake).
Comp ratio - 11.0:1
Cam - Box custom solid roller (made by Crower, he's kinda
secretive of his specs, but think 260'ish @ .050, and
.700 lift. This is one of his milder cams, since this is a
street car.)
Carb - ProSystems 1000 cfm.
Do you know what head they used to CNC to 245? Those are wicked numbers but I suspect it would take a thcik casting as they have to be rather large ports.
Your 440 should be a beast......
Jebby
