My Scat Rods came with the 7/16X1.4" ARPs and the spec on the box was 64LBS with maximun stretch of .0046".
Race Car Engine Build
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Le Mans Master
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Yep. He probably kept the caps the way they are for budget reasons.
I'll bet he isn't going for a huge HP build, probably in the 300 - 350 rwhp
I have the same problem, but I'm not adverse to a dyno reclass.
I'm going to be around 3400lbs (driver and splash of fuel) and MAX 350 rwhp with a 383. One of the reasons I went with a Hotcam instead of a cusom grind.
Now I'm still planning the replacement engine for the 383 in case it blows. I'll be using my original LT1 for that one.
I'll bet he isn't going for a huge HP build, probably in the 300 - 350 rwhp
I have the same problem, but I'm not adverse to a dyno reclass.
I'm going to be around 3400lbs (driver and splash of fuel) and MAX 350 rwhp with a 383. One of the reasons I went with a Hotcam instead of a cusom grind.
Now I'm still planning the replacement engine for the 383 in case it blows. I'll be using my original LT1 for that one.
I am building for about 370 HP to the wheels and about 3158 comp weight with me and fuel in the car.
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Le Mans Master
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From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
2024 C5 of the Year Winner - Modified
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St. Jude Donor '09-'10-'11
I also have a question regarding rod bolt torque. What are the specs for a lubed rod bolt? The bolts are ARP 8740 high tensile strength, if it makes a difference. I believe lubed torque is around 45 ft/lbs but wasn't 100% sure.
Edit: These are the rods I got
http://www.summitracing.com/parts/SCA-26000716/
The only specs on rod bolts I could find on the ARP site were for kits to add to rods. These rods came with these bolts and I dont know what kit they are from.
Edit: These are the rods I got
http://www.summitracing.com/parts/SCA-26000716/
The only specs on rod bolts I could find on the ARP site were for kits to add to rods. These rods came with these bolts and I dont know what kit they are from.
Last edited by Kubs; Apr 7, 2012 at 09:32 PM.
Safety Car
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From: Dale City VA
I also have a question regarding rod bolt torque. What are the specs for a lubed rod bolt? The bolts are ARP 8740 high tensile strength, if it makes a difference. I believe lubed torque is around 45 ft/lbs but wasn't 100% sure.
Edit: These are the rods I got
http://www.summitracing.com/parts/SCA-26000716/
The only specs on rod bolts I could find on the ARP site were for kits to add to rods. These rods came with these bolts and I dont know what kit they are from.
Edit: These are the rods I got
http://www.summitracing.com/parts/SCA-26000716/
The only specs on rod bolts I could find on the ARP site were for kits to add to rods. These rods came with these bolts and I dont know what kit they are from.
SCAT sends bolt specs in the box or a label on the box.
Will
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I thought the corvettes all got 4 bolt mains L98 and LTx?
If you are using points don't forget the freaking tire width
TTC is only a 255 and that is the widest tire you can run without taking points.
My reclass last year gave me at least a TTB 265 as the widest tire so the 275 was only +1 pt.
If you are using points don't forget the freaking tire width
TTC is only a 255 and that is the widest tire you can run without taking points.
My reclass last year gave me at least a TTB 265 as the widest tire so the 275 was only +1 pt.
Safety Car
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From: Dale City VA
LTX in the Y body are 4 bolt main.
L98's are all 2 bolt main reguardless of what platform they came in.
There are factory 4 bolt roller cam blocks, which came in GM 3/4 ton commercial trucks (ie Cube Vans) or over the counter crate engines (ie ZZ3/4).
Will
L98's are all 2 bolt main reguardless of what platform they came in.
There are factory 4 bolt roller cam blocks, which came in GM 3/4 ton commercial trucks (ie Cube Vans) or over the counter crate engines (ie ZZ3/4).
Will
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Le Mans Master
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2025 Corvette of the Year Finalist - Modified
2024 C5 of the Year Winner - Modified
2023 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
St. Jude Donor '09-'10-'11
I thought the corvettes all got 4 bolt mains L98 and LTx?
If you are using points don't forget the freaking tire width
TTC is only a 255 and that is the widest tire you can run without taking points.
My reclass last year gave me at least a TTB 265 as the widest tire so the 275 was only +1 pt.
If you are using points don't forget the freaking tire width
TTC is only a 255 and that is the widest tire you can run without taking points.
My reclass last year gave me at least a TTB 265 as the widest tire so the 275 was only +1 pt.
I am planning on a 275mm tire with no dyno reclass. We will see how it goes at first. I have a couple back up plans in case I need to change things to go faster.
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Le Mans Master
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2025 Corvette of the Year Finalist - Modified
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No that is not the backup plan. That would be the primary plan if it were an option.
Safety Car
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From: Dale City VA
http://www.scatcrankshafts.com/scatt...rque_specs.pdf
Will
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Le Mans Master
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St. Jude Donor '09-'10-'11
7/16X1.4 ARP 8740 cap screw = 64lbs with ARP moly lube.
http://www.scatcrankshafts.com/scatt...rque_specs.pdf
Will
http://www.scatcrankshafts.com/scatt...rque_specs.pdf
Will
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Safety Car
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7/16X1.4 ARP 8740 cap screw = 64lbs with ARP moly lube.
http://www.scatcrankshafts.com/scatt...rque_specs.pdf
Will
http://www.scatcrankshafts.com/scatt...rque_specs.pdf
Will
Awesome work, can't wait to see the outcome 
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Le Mans Master
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2025 Corvette of the Year Finalist - Modified
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St. Jude Donor '09-'10-'11
Should be more pictures this weekend. I plan to get the rest of the pistons in, and possibly the cam this weekend.
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Le Mans Master
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2025 Corvette of the Year Finalist - Modified
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St. Jude Donor '09-'10-'11
Thanks Will and Ray! The torque was right on the box like you guys said it would be. I can't believe I missed it before. 
I got 3 more pistons in last night for a total of 4. All are torqued to 65ft/lbs.
I got 3 more pistons in last night for a total of 4. All are torqued to 65ft/lbs.
Thread Starter
Le Mans Master
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From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
2024 C5 of the Year Winner - Modified
2023 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
St. Jude Donor '09-'10-'11