4l80E help with converter bolts
4l80E help with converter bolts I got a 4l80e and a yank converter,tci flexplate with the arp flexplate bolts now i want to get ARP bolts for the converter also but need to knwo what size pitch thread can anyone help?
My 4L80E is out but unfortunately I am out of town... I will be able to tell you in a couple weeks!
However, I remember those bolts are pretty meaty.... and there's 6 of them unlike some over converters... do you really think you're at any risk?? That's a lot of metal to go through!!
However, I remember those bolts are pretty meaty.... and there's 6 of them unlike some over converters... do you really think you're at any risk?? That's a lot of metal to go through!!
Originally Posted by fash00
I got a 4l80e and a yank converter,tci flexplate with the arp flexplate bolts now i want to get ARP bolts for the converter also but need to knwo what size pitch thread can anyone help?
Are you running an internal or external balance motor?
If it is internal the Summit P/N is: ARP-200-2902, $10.88
If it is external the Summit P/N is: ARP-200-2906, $10.95
These are both Pro Series ARP Flexplate bolt kits, 6 each.
I am using the 2902 pack on my 4L80E with an internally balanced engine. They are stout parts, and need a 12-point, 3/4" socket.
Jim
If it is internal the Summit P/N is: ARP-200-2902, $10.88
If it is external the Summit P/N is: ARP-200-2906, $10.95
These are both Pro Series ARP Flexplate bolt kits, 6 each.
I am using the 2902 pack on my 4L80E with an internally balanced engine. They are stout parts, and need a 12-point, 3/4" socket.
Jim
This is the ARP spec from Summit:
Fastener Material: Steel
Fastener Finish: Black oxide
Fastener Head Style: 12-point
Thread Size: 7/16-20 RH in.
Underhead Length (in): .680
Fastener Yield Strength (psi): 200,000
Washers Included: Yes
Quantity: Sold as a set of 6.
Notes: Fits with 3/4 in. socket.
I believe it is the flexplate-to-torque converter bolts that are metric, and you must use Metric Grade 10.9 because there are only 3 bolts holding the converter. I remember that Summit/ARP did not carry them and I had to go to a special metric store (Mr. Metric) here in San Jose, CA. They're like $1.25 each, and dark gray.
Jim
Fastener Material: Steel
Fastener Finish: Black oxide
Fastener Head Style: 12-point
Thread Size: 7/16-20 RH in.
Underhead Length (in): .680
Fastener Yield Strength (psi): 200,000
Washers Included: Yes
Quantity: Sold as a set of 6.
Notes: Fits with 3/4 in. socket.
I believe it is the flexplate-to-torque converter bolts that are metric, and you must use Metric Grade 10.9 because there are only 3 bolts holding the converter. I remember that Summit/ARP did not carry them and I had to go to a special metric store (Mr. Metric) here in San Jose, CA. They're like $1.25 each, and dark gray.
Jim
The ones I used on my vig converter were metric 11mm by 1.25 pitch. I used grade 8 bolts and have had no problems. We used the same grade 8 bolts on my buddies car with over 600 rwhp also with no problems. I tried to find higher grade bolts, but came up with nothing after a week of driving around down in la. Can you send me a link to the metric store if they have a website to order from.
Let me check if I have it right:
You are talking about which?:
- The SIX bolts that attach the flexplate to the rear of the crankshaft? These are Standard thread.
- The THREE bolts that go to the Torque Converter? These are Metric thread and must be Metric rated 10.9 or higher.
I am sure you have it right but want to make sure I understand it.
Jim
You are talking about which?:
- The SIX bolts that attach the flexplate to the rear of the crankshaft? These are Standard thread.
- The THREE bolts that go to the Torque Converter? These are Metric thread and must be Metric rated 10.9 or higher.
I am sure you have it right but want to make sure I understand it.
Jim
Trending Topics
Now I am confused... I'm almost positive I have 6 bolts holding my 2003 4L80E converter to the flexplate.
Do you only have 3 on your 4L80E? What model year is it out of?
Do you only have 3 on your 4L80E? What model year is it out of?
Originally Posted by DeltaT
Let me check if I have it right:
You are talking about which?:
- The SIX bolts that attach the flexplate to the rear of the crankshaft? These are Standard thread.
- The THREE bolts that go to the Torque Converter? These are Metric thread and must be Metric rated 10.9 or higher.
I am sure you have it right but want to make sure I understand it.
Jim
You are talking about which?:
- The SIX bolts that attach the flexplate to the rear of the crankshaft? These are Standard thread.
- The THREE bolts that go to the Torque Converter? These are Metric thread and must be Metric rated 10.9 or higher.
I am sure you have it right but want to make sure I understand it.
Jim
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever
Verdad Gallardo He is not using an lsx motor from the picture I see. The flexplate uses 6 11mm bolts that can be bought from arp if you are using a tci flexplate. The converter to flex plate uses 3 11mm bolts. My vig converter also has 3 standard threaded holes, but since I used the metric ones I don't know the size on the standard holes.
