radar502

I guess being a person that works on the Corvettes I look at thinks different . Corvettes have flaws and I know it going in . The C-4s RPO Z07 handled with just about anything add. a little power stiffen up the body and BAM great Corvette .The C-5 Z great Corvette the interior sucked and HOT and loud on the inside added some sound proofing and heat barrier 100 more HP and followed a C-7 around Track of America at over 160 mph right on the bumper ( not bad for a 13 year old Corvette ) . People just want the next best thing but like they all have flows even the new $100,000 one ,the Zs are over heating . They all are great rides if one just drives them to church and to work for time to time ,but for people like my self I push them to the limit . I have worked on the last 50 years every HOT ROD on the road and the Corvette is the best all around thing going . It a money thing pay $150.000 + and might get a Sports car with no flaws .. Corvettes have a few so that .. Got to love them ..

Zak2018

This is one of the flaws I'm reading the most about the C4, along with rattling and shaking. When you say stiffen up the body, are you talking about a racing cage type of deal? Or are there other more subtle ways? For a road car a cage is just so inconvenient. Thanks.

Tom400CFI

Go drive some and buy a tight one. My '92 rattled less than my 16k mile C6, when I bought it.

93Polo

The biggest thing in keep rattles down in a C4 is body panel alignment. My car was in a light accident but thankfully the body shop manager was a friend. The car was much quieter after he was done. C5s also have their own problem in this area as much of their interior is plastic but all you can do is relpace the plastic pine trees that hold the door panels on or replace the center plastic trim when the screw hole cracks..

radar502

NO don't have to go that deep into the deal it's been years scene I tighten up the body on a C-4 , 6 years I think anyway . I installed a bar in the front of the motor and in stalled some cross braces under the body bolt on deals . You need to ask the C-4 Tech guys it's been awhile scene I installed the stuff on a C-4 but did it the job..

radar502

I had this one and the C-4 at the same time this had 550 HP . I fixed the flows in both and was a toss up one witch one was better ride . Man got to know his limits .. I tried to over drive these Corvettes ,unless you had a death wish both go anywhere you pointed them at just about any speed.. Fun rides .. Drove them both al over the US never had a problem ,for sure it helps to know how to work on them and what to do to them to get them right ..

radar502

OK this is not my 96 C-4 were is the C-4 PIC ???? Sometimes the pic for me will not upload . O- WELL . Its really nice C-4 ..

ChumpVette

JrRifleCoach

Personally loosing the glass house and gaining a real trunk lid was the biggest draw.
And the new LS engines were another technology leap from the LT series.
My day of enlightenment was sitting in a 04Z at the dealership. Dreamcar fever hit me hard.
​​​​​​​

93Polo

College roommate's FRC which he still owns has dual zone AC

A FRC with dual zone for sale on the forum (not my friend's)
https://www.corvetteforum.com/forums...-2000-frc.html

Dual zone would not be an easy retrofit.

ChumpVette

93Polo

It became available at some point in '99 along with HUD.

https://www.corvetteforum.com/forums...ean-title.html

I wish fixedroofcoupe.com was up with the production #s. Poster posts 435 99s came with dual zone.

93Polo

Found the production #s

https://www.z06vette.com/forums/f10/...oduction-7054/

81c3

Actually, still not beating the KOTH in hp.... in 01 the Z06 had 385 hp.... In 02, the LS6 finally matched the real KOTH at 405hp.

Tom400CFI

People talk about this, erroneously, comparing it to the C4. "They moved the transmission to the rear for better weight bias". But the weight bias remained about the same.

I think people -due to Chevy's marketing, and mag authors "re-tweets" of the OEM- tend to exaggerate and give too much credit here. Remember, while the trans moved to the rear, the gas tank moved forward, and the rear axle moved back.

'92 LT1: 51/49

'97 C5: 51.8/48.2

...Effectively the same but actually slightly closer to 50/50 for the '92 C4. Chev made a BIG hoopla over the C5's transaxle and "weight distribution"...but what they REALLY did was move the trans and gain a bunch of foot well room. Any diff in weigh distribution between a base C4 and a C5 could be mitigated w/a battery move.


.

93Polo

FRC/Z06s were generally a little more front biased thanks to the weight removal of the trunk rather than a hatch or convertible top. 53/47 is more in the Z06 territory. FRCs may be a bit closer to 51/49 with the absence of titanium exhaust. Options can change the weight, HUD is not the lightest option, dual zone AC adds more actuators etc.

https://www.corvetteforum.com/forums...tribution.html

51/49 or 53/47 most won't notice. The transmission being moved from the front to the rear gained loads of room in the foot well. The rarely discussed move is the gas tank going from high in the back on C2/3/4 above and behind the diff to saddle tanks low in front of the rear wheels. The saddle tanks combined with the trans/diff being in the back providing weight on the tires but low makes for good weight balance but lower in the car.

Zak2018

Thanks. Maybe the C4 tech guys will post then.

Zak2018

Nice. But the rattle worries me way less than the stiffness I see mentioned often. I wouldn't mind a little rattle if the rest is just great.

Zak2018

What's the weight distribution for the ZR-1?

And are these numbers calculated with or without a driver? And if with a driver, what weight of a driver?

If without a driver, given the driver sits closer to the rear axle in the C4, the C4 weight distribution would be even more biased towards the rear, which is good.

93Polo

Van Steel makes a Camber brace. RD racing was the 1st I knew of to produce this type of product but they are no longer in production.

A harness bar in the back helps stiffen the chassis in the rear.

A Convertible x brace helps. RD made a version as well but again out of production. The stiffener bar system maybe available,
https://www.corvetteforum.com/forums...on-t-work.html