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Search: Posts Made By: gcusmano74
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Forum: C3 Tech/Performance
03-17-2017, 10:29 PM
Replies: 22
Views: 2,612
Posted By gcusmano74

Those nuts need to be retained positively. The...

Those nuts need to be retained positively. The factory used a cotter pin and a castellated nut on a cross drilled bolt. VB&P used nylock nuts (9/16 NF). If they unscrew while you're driving, it...
Forum: C3 Tech/Performance
02-17-2017, 10:51 PM
Replies: 11
Views: 2,802
Posted By gcusmano74

Yes. First person testimony.

Yes. First person testimony.
Forum: C3 Tech/Performance
02-17-2017, 10:29 PM
Replies: 7
Views: 2,785
Posted By gcusmano74

Yes. Happened to me, as well. Some of the repro...

Yes. Happened to me, as well. Some of the repro houses sell the spring w/rivet alone, or you can buy a new fork that has it already installed.
Forum: C3s for Sale/Wanted
01-19-2017, 08:08 PM
Replies: 15
Views: 3,553
Posted By gcusmano74

I'm in NJ. 1974 w/350 & 4 speed Muncie. ...

I'm in NJ. 1974 w/350 & 4 speed Muncie. Origional engine, rebuilt about six years ago. Sweet driver. Interested?
Forum: C3 Tech/Performance
01-17-2017, 10:07 PM
Replies: 20
Views: 1,614
Posted By gcusmano74

Agree with most of what everyone has been saying,...

Agree with most of what everyone has been saying, except one. A racing oil is designed for VERY frequent changes, like once a week, right after the Sunday race. The additive package doesn't last. ...
Forum: C3 Tech/Performance
01-17-2017, 09:49 PM
Replies: 22
Views: 1,916
Posted By gcusmano74

Yes. Slight variation. Easier than waiting for...

Yes. Slight variation. Easier than waiting for each lifter to automatically adjust.
With the engine running, and cardboard placed to contain the oil splash, adjust ALL the rockers to ZERO lash on...
Forum: C3 Tech/Performance
01-17-2017, 09:41 PM
Replies: 35
Views: 3,259
Posted By gcusmano74

Chevrolet specs the rear suspension ride height...

Chevrolet specs the rear suspension ride height by measuring the difference in height between the inner and outer camber strut rod bolts. IIRC, about 2" for the street, about 1 1/4" for racing.
Net...
Forum: C3 General
01-17-2017, 09:05 PM
Replies: 6
Views: 6,373
Posted By gcusmano74

Redline MT-90. My Muncie never used to like...

Redline MT-90.
My Muncie never used to like to go into second when it was cold. I had always used the GM gear oil. I even tried the limited slip additive in the trans. It improved things very...
Forum: C3 General
01-17-2017, 08:53 PM
Replies: 1
Views: 922
Posted By gcusmano74

Been years since I had mine apart, but. ...

Been years since I had mine apart, but. Disconnect the battery first, or the neighbors will be irritated by the honking.
I think that after you remove the horn ring and electric contacts, you can...
Forum: C3 Tech/Performance
01-12-2017, 10:32 PM
Replies: 16
Views: 6,035
Posted By gcusmano74

One more thing. Install rubber isolators on top...

One more thing. Install rubber isolators on top of your 460# springs. It will improve the NVH isolation. Chevrolet used them on the full sized cars, somehow the Corvette didn't get them.
Forum: C3 Tech/Performance
01-12-2017, 10:24 PM
Replies: 15
Views: 1,318
Posted By gcusmano74

I would not.

I would not.
Forum: C3 Tech/Performance
01-12-2017, 10:22 PM
Replies: 27
Views: 2,484
Posted By gcusmano74

The early Qjets had a tiny fuel filter inside of...

The early Qjets had a tiny fuel filter inside of a short inlet fitting. The 1977 or so version used a longer filter which flows slightly better. The long pattern inlet fitting was used on the full...
Forum: C3 Tech/Performance
01-12-2017, 09:59 PM
Replies: 16
Views: 6,035
Posted By gcusmano74

You can spend a BUNCH of money on your car, and...

You can spend a BUNCH of money on your car, and make it DIFFERENT. But it's not so easy to make it BETTER.
IMHO, budget mods as follows:
Fresh suspension bushings, front and rear. Rubber...
Forum: C3 Tech/Performance
01-08-2017, 08:30 AM
Replies: 15
Views: 2,770
Posted By gcusmano74

I have a pair of very slightly used Magnaflows to...

I have a pair of very slightly used Magnaflows to fit 74 to 82 cars, with 2 1/2" inlets welded on. $40/pair plus freight. Or pick up in NJ.
Forum: C3s for Sale/Wanted
01-07-2017, 11:06 AM
Replies: 5
Views: 1,570
Posted By gcusmano74

I'm in New Jersey. 1974 w/350 and 4 speed...

I'm in New Jersey. 1974 w/350 and 4 speed Muncie, AC, PS and tilt/tele wheel. Any interest?
Forum: C3 Tech/Performance
01-05-2017, 07:38 PM
Replies: 12
Views: 2,725
Posted By gcusmano74

I use a bump steer kit in a car that's not even...

I use a bump steer kit in a car that's not even lowered. I think it dramatically improves the feel of the steering. I safety wired the bolts that retain the block to the steering arm. I also had...
Forum: C3 Tech/Performance
01-05-2017, 07:30 PM
Replies: 31
Views: 8,381
Posted By gcusmano74

Nah, just change it again after a hundred miles. ...

Nah, just change it again after a hundred miles. Don't overthink it.
Forum: C3 General
01-05-2017, 07:25 PM
Replies: 28
Views: 13,982
Posted By gcusmano74

IMHO, when you use an aluminum intake manifold on...

IMHO, when you use an aluminum intake manifold on a garage kept car, a heat riser is not required. Seems to me we spend a bunch of good money putting free flowing exhaust pipes on the car, and a...
Forum: C3 Tech/Performance
12-31-2016, 03:32 PM
Replies: 10
Views: 1,931
Posted By gcusmano74

When my car had about 110,000 miles, I had the...

When my car had about 110,000 miles, I had the diff rebuilt. Among other things, the end play of the side yokes was excessive. After the rebuilder put in fresh posi clutch packs, the end play was...
Forum: C3 Tech/Performance
12-31-2016, 03:29 PM
Replies: 10
Views: 1,931
Posted By gcusmano74

When my car had, maybe, 110,000 miles, I had the...

When my car had, maybe, 110,000 miles, I had the diff rebuilt. Among other problems, the side yokes had excessive end play. But when the rebuilder installed fresh posi clutch packs, the end play...
Forum: C3s for Sale/Wanted
12-31-2016, 03:19 PM
Replies: 5
Views: 2,158
Posted By gcusmano74

PS. I am in Union County, NJ

PS. I am in Union County, NJ
Forum: C3s for Sale/Wanted
12-31-2016, 03:17 PM
Replies: 5
Views: 2,158
Posted By gcusmano74

Dear Mike, Attached please see some photos of...

Dear Mike,
Attached please see some photos of my 74 L48 convertible. Would only be interested in cash, no trades.
Forum: C3 Tech/Performance
12-05-2016, 09:35 PM
Replies: 34
Views: 2,480
Posted By gcusmano74

The thermostat will "set" the minimum operating...

The thermostat will "set" the minimum operating temperature of the engine. The efficiency of the water pump and radiator will "set" the max temp. Don't overthink it. A 180 stat is a good choice...
Forum: C3 Tech/Performance
12-05-2016, 09:27 PM
Replies: 11
Views: 1,612
Posted By gcusmano74

Been a while since I did that on my car, but I...

Been a while since I did that on my car, but I think you have to take one bearing per lamp clean out to remove the assembly.:thumbs:
Forum: C3 Tech/Performance
11-13-2016, 09:07 PM
Replies: 1
Views: 679
Posted By gcusmano74

IMHO, this package is a race/autocross prep kit,...

IMHO, this package is a race/autocross prep kit, similar to what Chevrolet called the "Daytona", not for city streets that have actual bumps. The biggest problem with the C3 chassis is it's lack of...
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