Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
|
01-28-2020, 05:35 AM | #1 | |
Registered User
Join Date: Apr 2019
Location: California
Posts: 53
|
Re: Smeding Performance 383 Extreme
Quote:
|
|
01-28-2020, 11:33 AM | #2 |
Senior Member
Join Date: Jul 2000
Location: North Texas
Posts: 3,429
|
Re: Smeding Performance 383 Extreme
Probably no more than a 1000 miles, if that. The car's been finished for only 3 months. I'm not sure which version of the 383 he has, but I'll find out.
I was just saying that the one you ordered may be a bit much on the street. You'll probably want a torque converter with a higher stall speed. If the TH350 comes with a converter, check with TCI to see if it's optimal for your engine. They will probably want to know the camshaft specs at .050" duration. The truck should be a blast to drive, but even with 30" tires like yours, the engine will be spinning pretty fast at highway speeds with 3.42 gears. I once had a mild 383 in a 69 C10 with a TH350, 29" tires and a 3.08 axle. At anything over 60-65 mph, I was always wishing for a taller rear gear! 3.42 would have been a non-starter for me. Keep in mind that your 383 will probably make 50% more torque and do it at lower RPM than your old 307, which means it can pull a much taller gear and still accelerate much quicker. Depending on how often you drive at highway speeds, I'd suggest 3.23 maximum.
__________________
Mike 1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 23 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
01-29-2020, 03:22 AM | #3 | |
Registered User
Join Date: Apr 2019
Location: California
Posts: 53
|
Re: Smeding Performance 383 Extreme
Quote:
|
|
Bookmarks |
|
|