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Search: Posts Made By: SpyderD
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Forum: C3s for Sale/Wanted
04-30-2019, 04:14 PM
Replies: 4
Views: 2,539
Posted By SpyderD

Anything that bumps this up is all good my...

Anything that bumps this up is all good my friend.
Really, my frame is totally rust free as well so if they have the means to take it to the frame they might have the means to also straighten the...
Forum: C3s for Sale/Wanted
04-23-2019, 11:29 AM
Replies: 4
Views: 2,539
Posted By SpyderD

Thanks. And I am motivated to sell and ready to...

Thanks. And I am motivated to sell and ready to deal. It's been in the corvette forum family (myself and a previous owner) for a long time so I want to start with you guys before I move to...
Forum: C3s for Sale/Wanted
04-14-2019, 06:26 PM
Replies: 4
Views: 2,539
Posted By SpyderD

1981 Corvette - bent frame - fix or parts car

Hello all,
Putting on the market my 1981 Corvette that went into a ditch last year, bending the frame and sustaining body damage. See original thread on it here for some history: ...
Forum: C3 General
08-10-2018, 02:56 PM
Replies: 15
Views: 1,584
Posted By SpyderD

The control arms from what I can see looks OK....

The control arms from what I can see looks OK. One of the bolts on the control arm cross shafts however were pushed in so hard it almost put a hole in the power steering pump - that tells me, said to...
Forum: C3 General
08-10-2018, 10:50 AM
Replies: 15
Views: 1,584
Posted By SpyderD

Thanks guys. I will use the diagrams provided...

Thanks guys.
I will use the diagrams provided and take some measurements over the weekend, then take to a frame shop and get an estimate.
Agreed this is no collector car, and just about...
Forum: C3 General
08-09-2018, 05:55 PM
Replies: 15
Views: 1,584
Posted By SpyderD

Idea of value - 81 Vette, Bent Frame

It was a sad day a few months ago when I did a few 360's on a rain slicked highway and ran off the road, glancing off a tree in the process. This vette has been owned by me for 15 years, bought it...
Forum: C3 Tech/Performance
08-30-2007, 02:16 PM
Replies: 37
Views: 2,400
Posted By SpyderD

Yes I agree. But my point is, and again this may...

Yes I agree. But my point is, and again this may have such a minor effect as to be irrelevant since it is so quick, is this -

timing at idle with vc connected to manifold - 20 (as an example)...
Forum: C3 Tech/Performance
08-30-2007, 12:47 PM
Replies: 37
Views: 2,400
Posted By SpyderD

Ah the ported vs. manifold debate. 1st of...

Ah the ported vs. manifold debate.

1st of all to the original poster, sounds like you got the vacuum advance hooked up right and your car is acting as expected with the vacuum advance...
Forum: C3 Tech/Performance
08-24-2007, 05:56 PM
Replies: 11
Views: 888
Posted By SpyderD

There was a detailed post years ago - dyno tests,...

There was a detailed post years ago - dyno tests, etc.

You will gain A HELL OF ALOT of HP by removing the cats and going to dual exhaust. 50, 60 horsepower? Around that range.

Open up the...
Forum: C3 Tech/Performance
03-29-2007, 04:20 PM
Replies: 13
Views: 542
Posted By SpyderD

Yeah man you start getting into sticky tires and...

Yeah man you start getting into sticky tires and you will find the weakest link very quickly. Ask yourself if you really need drag radials? Then ask yourself if you want to find broken U-joints or...
Forum: C3 Tech/Performance
03-23-2007, 05:31 PM
Replies: 14
Views: 1,317
Posted By SpyderD

You drilled out your shooters???? I hope you...

You drilled out your shooters???? I hope you didn't ruin them, those are pretty precise measurements. I would personally just go down to the parts store and by sizes 2 and 4 size larger and tried...
Forum: C3 Tech/Performance
03-23-2007, 05:14 PM
Replies: 24
Views: 1,097
Posted By SpyderD

Suprised no one came up with the obvious answer...

Suprised no one came up with the obvious answer to drastically improving 1/4 mile time - improve 60 foot time. Get drag radials and you will probably be there.

Now we don't know what you have or...
Forum: C3 Tech/Performance
03-20-2007, 12:56 PM
Replies: 8
Views: 799
Posted By SpyderD

Can't beat those hydrolic rollers. Some good...

Can't beat those hydrolic rollers. Some good crate engines out there.

On the other hand, the benifit to using your old engine is you have a seasoned block that may be more reliable if rebuilt...
Forum: C3 Tech/Performance
11-25-2006, 10:44 AM
Replies: 19
Views: 1,168
Posted By SpyderD

Let me try to answer in simple language. The...

Let me try to answer in simple language. The little hex screw adjustment adjusts the point of vacuum at which the vacuum can starts kicking in (starts pulling on the distributor and adds timing). ...
Forum: C3 Tech/Performance
09-12-2006, 11:03 PM
Replies: 12
Views: 542
Posted By SpyderD

Don't do a burnout, it's even debatable if...

Don't do a burnout, it's even debatable if letting the air out of your street tires will help or not. You don't drive through the water box do you?

The best thing you can do is practice...
Forum: C3 General
09-11-2006, 08:09 PM
Replies: 34
Views: 1,291
Posted By SpyderD

If this car invaded your brain remove it from...

If this car invaded your brain remove it from your brain, surgically if possible.

Umm where do I start? It's ugly and it's a wreck.
Forum: C3 Tech/Performance
09-03-2006, 02:08 PM
Replies: 11
Views: 406
Posted By SpyderD

Yes lower the idle via the carb adjustment screw....

Yes lower the idle via the carb adjustment screw. You have such a difference between idle and drive because in drive the RPM is just high enough to engage your centrifugul timing, which in turn...
Forum: C3 Tech/Performance
08-27-2006, 02:11 PM
Replies: 4
Views: 424
Posted By SpyderD

I looked at my '81 computer (non-functional but...

I looked at my '81 computer (non-functional but still in the car) but I didn't pull out the battery to get a good look. It has a number of 8818547 on the top side and a "Delco Electronics" sticker...
Forum: Pacific Northwest
08-26-2006, 01:21 PM
Replies: 33
Views: 1,732
Posted By SpyderD

Do you still have cats? You won't be loud. I...

Do you still have cats? You won't be loud. I can't imagine any C5 or C6, even with an aftermarket exhaust, with anything but a refined but agressive sound.

Now loud is a carburated big block...
Forum: C3 Tech/Performance
08-22-2006, 07:58 PM
Replies: 24
Views: 6,866
Posted By SpyderD

Yeah those shiny alumunum spots are your pistons...

Yeah those shiny alumunum spots are your pistons breaking apart from detonation. Lean conditions will do it and so will being overadvanced. Seems you understand the theory about timing and advance...
Forum: C3 Tech/Performance
08-21-2006, 07:58 PM
Replies: 24
Views: 2,348
Posted By SpyderD

Dude no offense but you just have to be...

Dude no offense but you just have to be smothering that carb. The K&N filter top actually drops down a 1/4 inch or so, and with 1.5 inch filter and the drop down element the filter top is probably...
Forum: C3 Tech/Performance
08-20-2006, 10:59 AM
Replies: 7
Views: 9,423
Posted By SpyderD

How do you cook a booster? Holley...

How do you cook a booster?
Holley intentionally makes it difficult for booster changes for insurance/safety reasons. I've heard they only allow a very few shops to change boosters although I am...
Forum: C3 Tech/Performance
08-20-2006, 10:52 AM
Replies: 24
Views: 3,354
Posted By SpyderD

You can always get one of those adaptor plates...

You can always get one of those adaptor plates that adapt a spread- to squarebore. With the air gap you may have hood clearance issues however.

Read carefully some posts about the BG demon carbs,...
Forum: C3 Tech/Performance
08-15-2006, 10:00 PM
Replies: 17
Views: 2,611
Posted By SpyderD

Those commercially available octane boosters are...

Those commercially available octane boosters are a rip-off and only raise the octane a few tenths of a point.

You could go with the ole toloune (sp) mixes. Buy the stuff at paint stores, etc. ...
Forum: C3 Tech/Performance
08-14-2006, 10:29 PM
Replies: 74
Views: 19,579
Posted By SpyderD

81's were relatively light compared to previous...

81's were relatively light compared to previous years (3200 pounds or so). Seats are really light but I can imagine all that carpet in the interior weighed a 100 pounds. If you removed the bumpers...
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