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Search: Posts Made By: Sweet70
Showing results 1 to 25 of 104
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Forum: C3 Tech/Performance
06-12-2016, 11:29 AM
Replies: 13
Views: 2,141
Posted By Sweet70

Bent pushrod

Bman,
I don't use the forum often so if this is not correct ... sorry!

Several things were done during the rebuild, Block rebored, new pistons and rings. new bearings and camshaft, new hydraulic...
Forum: C3 Tech/Performance
06-12-2016, 11:01 AM
Replies: 13
Views: 2,141
Posted By Sweet70

Thank you I'll check.

Thank you I'll check.
Forum: C3 Tech/Performance
06-04-2016, 01:18 PM
Replies: 13
Views: 2,141
Posted By Sweet70

Pushrod question

I have a 1970 L46 engine rebuilt to stock. About a year ago I replaced the cam with a correct GM spec cam. The engine was returned to original 11.1 compression. Since the rebuild I have started and...
Forum: C3 Tech/Performance
09-02-2014, 03:26 PM
Replies: 57
Views: 8,546
Posted By Sweet70

Thanks, I did send a detailed request to Chris...

Thanks, I did send a detailed request to Chris per your suggestion without reply. Based on my testing today I am going to work on the ignition timing first. Thank you for the time, I have learned a...
Forum: C3 Tech/Performance
09-02-2014, 03:08 PM
Replies: 57
Views: 8,546
Posted By Sweet70

I'm not sure if you will receive this but I'll...

I'm not sure if you will receive this but I'll give it a try. We have been out of town for the last month, so today I tried your suggestion of plugging the vacuum advance. At an ambient temperature...
Forum: C3 Tech/Performance
08-13-2014, 07:09 PM
Replies: 57
Views: 8,546
Posted By Sweet70

were Thank you for the tip. When I last ran...

were

Thank you for the tip. When I last ran the engine I switched to the two gold springs in the MR G kit. Like you I suspected the springs that were in the distributor were allowing "all in "...
Forum: C3 Tech/Performance
08-12-2014, 07:59 AM
Replies: 57
Views: 8,546
Posted By Sweet70

I read an interesting article comparing three...

I read an interesting article comparing three cams from yesteryear in L79 vs L46 vs L82 engines. My original cam (3896962) rated very well, it made reference to the domed pistons cast iron heads and...
Forum: C3 Tech/Performance
08-09-2014, 03:03 PM
Replies: 57
Views: 8,546
Posted By Sweet70

Thanks for the comments, I would prefer going the...

Thanks for the comments, I would prefer going the way of replacing the cam to something less radical rather than chase a cc or two in the heads. I'm confident the 64cc chamber is correct for these...
Forum: C3 Tech/Performance
08-08-2014, 04:04 PM
Replies: 57
Views: 8,546
Posted By Sweet70

Thanks indeed for your time and trouble. Since...

Thanks indeed for your time and trouble. Since you shared the calculator I've done a couple of things. My 3927186 heads are rated at 64cc and not 58cc as previously stated. This change significantly...
Forum: C3 Tech/Performance
08-07-2014, 12:28 PM
Replies: 57
Views: 8,546
Posted By Sweet70

The good news ... if any, is this not a daily...

The good news ... if any, is this not a daily driver. The reason for selecting a domed piston was the original GM piston 3942545 had a dome and this at the time seemed like a good alternative. It...
Forum: C3 Tech/Performance
08-07-2014, 10:14 AM
Replies: 57
Views: 8,546
Posted By Sweet70

At the vin plate and head right side seems like...

At the vin plate and head right side seems like .033" same on the left side. Thoughts?
Forum: C3 Tech/Performance
08-07-2014, 08:32 AM
Replies: 57
Views: 8,546
Posted By Sweet70

Thanks but I fear my foot was out to be shot at!...

Thanks but I fear my foot was out to be shot at! I wish this were the case but I fear not. The block was not decked when it was bored .030" over. But the replacement pistons were upped a bit to allow...
Forum: C3 Tech/Performance
08-07-2014, 07:18 AM
Replies: 57
Views: 8,546
Posted By Sweet70

My thanks to all those who offered suggestions. I...

My thanks to all those who offered suggestions. I have a numbers matching L46, heads and inlet manifold are cast iron ... not sure what that aluminum head talk was about.
Based on the many...
Forum: C3 Tech/Performance
08-06-2014, 03:33 PM
Replies: 57
Views: 8,546
Posted By Sweet70

Sounds like a novice question but where can you...

Sounds like a novice question but where can you typically buy race fuel?
Forum: C3 Tech/Performance
08-06-2014, 01:15 PM
Replies: 57
Views: 8,546
Posted By Sweet70

I agree with the thought process re what's...

I agree with the thought process re what's changed ... basically a lot.

I purchased the car about five years ago at that time it was mostly original but in need of a restoration. Since then I have...
Forum: C3 Tech/Performance
08-06-2014, 12:06 PM
Replies: 57
Views: 8,546
Posted By Sweet70

Thanks for the in put, this is 4* lower and 10*...

Thanks for the in put, this is 4* lower and 10* lower than I'm currently at without vacuum.
Forum: C3 Tech/Performance
08-06-2014, 07:31 AM
Replies: 57
Views: 8,546
Posted By Sweet70

Good thought, I'll give it a try.

Good thought, I'll give it a try.
Forum: C3 Tech/Performance
08-06-2014, 07:18 AM
Replies: 57
Views: 8,546
Posted By Sweet70

Yesterday I decided to start over and reset from...

Yesterday I decided to start over and reset from scratch. Best I could tell following your instructions I was "all in" at 2500 rpm with one spring at about 2650 with a black and silver spring set....
Forum: C3 Tech/Performance
08-06-2014, 06:26 AM
Replies: 57
Views: 8,546
Posted By Sweet70

93 octane, tried different brands and gas...

93 octane, tried different brands and gas stations.
Started with AC Delco R-45 and changed to R-43 a few months ago (no real change).
At engine rebuild (2000 miles ago) I switched from a 195 to 180...
Forum: C3 Tech/Performance
08-06-2014, 06:13 AM
Replies: 57
Views: 8,546
Posted By Sweet70

That could be possible but I don't think...

That could be possible but I don't think probable. It's only 2,000 miles since the engine rebuild, block bored, new pistons, rings, heads cleaned etc.
Forum: C3 Tech/Performance
08-05-2014, 08:02 AM
Replies: 57
Views: 8,546
Posted By Sweet70

Thank you for your suggestions, like you I agree...

Thank you for your suggestions, like you I agree it doesn't make much sense.

In the engine rebuild when I removed the body I did replace the harmonic balancer because the sandwiched dampening...
Forum: C3 Tech/Performance
08-05-2014, 05:46 AM
Replies: 57
Views: 8,546
Posted By Sweet70

Thank you that's certainly an option for...

Thank you that's certainly an option for consideration.
Forum: C3 Tech/Performance
08-04-2014, 01:18 PM
Replies: 6
Views: 1,042
Posted By Sweet70

I recently upgraded my 70 to power brakes ......

I recently upgraded my 70 to power brakes ... think it's the same set-up as yours. Firstly unless you have a cool environment or a necessity to do this now I would wait until it cools down a bit. Be...
Forum: C3 Tech/Performance
08-04-2014, 12:55 PM
Replies: 57
Views: 8,546
Posted By Sweet70

Timing is everything!

First my question … are there higher rated distributor centrifugal weight springs available?
Now the background I’ve been battling with pre-ignition for some time. I have diligently followed Lars...
Forum: C3 Tech/Performance
07-18-2014, 07:02 AM
Replies: 27
Views: 8,532
Posted By Sweet70

PS ... Thinking about it the brake clevis should...

PS ... Thinking about it the brake clevis should be relocated to the lower position on the brake pedal arm.
Showing results 1 to 25 of 104
 
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