C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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About to order a package would like input.

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Old Jun 17, 2011 | 07:12 PM
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Default About to order a package would like input.

http://www.summitracing.com/parts/BIG-31106FLT/ -Headers
http://www.summitracing.com/parts/CMB-08-0039/ -Top end kit
http://www.summitracing.com/parts/EDL-1405/ - carb
http://www.summitracing.com/parts/SUM-G6906/ - roller rockers

Will all these parts work on the C3?
Any other parts I should take consider getting obviously a gasket kit.

Does anybody know were i can get a complete hose kit for the c3 including vacuum lines and break lines and all that fun stuff.

New to the game but man I LOVE my c3!
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Old Jun 17, 2011 | 08:28 PM
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I think you can save some money in your choices. Rebuild your q-jet it flows 750 cfm. The heads are only 64 cc and if you plan on using the stock pistons you will still have a low compression 9:1 motor. I would skip the roller rockers and use stamped steel ones for a mild build.

Dr Rebuild, Wilcox and Corvette Central all have vacuum hose kits.
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Old Jun 17, 2011 | 08:34 PM
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My '74 L48 car had 10.25:1 pistons installed and an RV cam + an Edelbrock Performer. Also has 2-1/2" Corvette Central exhaust with Magnaflows - it runs great. My next step (if I keep it) will be to install full length headers and possibly some 2.02/1.60 heads. Yep - I should'a replaced the heads when I did the intake But keep in mind that you probably don;t want to 'outrun' your chassis. These cars were engineered with a HP limit due to olde timey chassis/brake technology. For this car I'll be happy with 350HP - and so will the car. You want to go fast, corner sure and brake hard: get a C4+ generation car. Just a very simple, .02cts worth input.
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Old Jun 17, 2011 | 08:35 PM
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Originally Posted by Scott Marzahl
I think you can save some money in your choices. Rebuild your q-jet it flows 750 cfm. The heads are only 64 cc and if you plan on using the stock pistons you will still have a low compression 9:1 motor. I would skip the roller rockers and use stamped steel ones for a mild build.

Dr Rebuild, Wilcox and Corvette Central all have vacuum hose kits.
What kind of pistons would you recommend then to make it mild compression motor? And the q-jet looks old and worn. What's the difference between stamped steel vs roller rockers?
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Old Jun 17, 2011 | 08:38 PM
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Originally Posted by mar
My '74 L48 car had 10.25:1 pistons installed and an RV cam + an Edelbrock Performer. Also has 2-1/2" Corvette Central exhaust with Magnaflows - it runs great. My next step (if I keep it) will be to install full length headers and possibly some 2.02/1.60 heads. Yep - I should'a replaced the heads when I did the intake But keep in mind that you probably don;t want to 'outrun' your chassis. These cars were engineered with a HP limit due to olde timey chassis/brake technology. For this car I'll be happy with 350HP - and so will the car. You want to go fast, corner sure and brake hard: get a C4+ generation car. Just a very simple, .02cts worth input.
c4 + generation car's are boring and everybody and there mother has one. Stingray's turn heads ...
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Old Jun 17, 2011 | 08:46 PM
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Undeniably and unequivocally - - - -without a doubt- just olde timey 'neath the hood & body.

Originally Posted by djermyn03
c4 + generation car's are boring and everybody and there mother has one. Stingray's turn heads ...
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Old Jun 17, 2011 | 08:48 PM
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Do you want to get into rebuilding the short block or just drop on a new top end? If the short block has 100K on it or more like most of these cars, it's more than likely ready for a rebuild and it doesn't make much sense to drop on new heads. SO then you need to ask yourself do you want a 350 or just upgrade to a 383 with a lot more torque for basically the price of a new crank.
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Old Jun 17, 2011 | 08:49 PM
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Find some hyper eutectics for your application. I'll see if I can find the details on the ones that were installed in my block. Don't know if it was bored out or not.

Originally Posted by djermyn03
What kind of pistons would you recommend then to make it mild compression motor? And the q-jet looks old and worn. What's the difference between stamped steel vs roller rockers?
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Old Jun 17, 2011 | 08:59 PM
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Find some hyper eutectics for your application. I'll see if I can find the details on the ones that were installed in my block. Don't know if it was bored out or not.

Originally Posted by djermyn03
What kind of pistons would you recommend then to make it mild compression motor? And the q-jet looks old and worn. What's the difference between stamped steel vs roller rockers?
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Old Jun 18, 2011 | 02:23 AM
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I think that you would be very dissapointed with a 204 cam when a wimpy L-82 cam was 222 duration stock

Just look up crane 272 or comp cams 262 or 268 numbers
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Old Jun 18, 2011 | 07:12 AM
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/b
Originally Posted by Scott Marzahl
Do you want to get into rebuilding the short block or just drop on a new top end? If the short block has 100K on it or more like most of these cars, it's more than likely ready for a rebuild and it doesn't make much sense to drop on new heads. SO then you need to ask yourself do you want a 350 or just upgrade to a 383 with a lot more torque for basically the price of a new crank.
Well the car is a 79 and has 46,000 miles on it and it already has a rebuilt motor in it. I'm going to get the block dipped and pressure checked to amake sure it's in fine- working order and I suspect it is. I do have a budget how much would I be looking at to upgrade to a new crank?
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Old Jun 18, 2011 | 07:14 AM
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i meant to a 383
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Old Jun 18, 2011 | 07:16 AM
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would it have a better result? to go the 383 route?
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Old Jun 18, 2011 | 07:20 AM
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Call your local machine shop: Find a good autoparts dealer (NAPA, the places that deliver parts to repair facilities, etc.) and ask them for the number of the machine shop they use. Eventually you'll find a shop that you can exchange thoughts on costs and issues associated with all your questions. "Is it better to do this...is it better to do that..."

"...you can get 'wit dis ... you can get wit' dat'...!"

"...Doo - Dahh --- Dippity...!

Originally Posted by djermyn03
/b

Well the car is a 79 and has 46,000 miles on it and it already has a rebuilt motor in it. I'm going to get the block dipped and pressure checked to amake sure it's in fine- working order and I suspect it is. I do have a budget how much would I be looking at to upgrade to a new crank?
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Old Jun 18, 2011 | 07:45 AM
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Originally Posted by mar
Call your local machine shop: Find a good autoparts dealer (NAPA, the places that deliver parts to repair facilities, etc.) and ask them for the number of the machine shop they use. Eventually you'll find a shop that you can exchange thoughts on costs and issues associated with all your questions. "Is it better to do this...is it better to do that..."

"...you can get 'wit dis ... you can get wit' dat'...!"

"...Doo - Dahh --- Dippity...!
Rodger that man
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Old Jun 18, 2011 | 10:49 AM
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By all means do the 383 (3.75 stroke) if you can youll love the torque increase and its everywhere not just further up the rpm band.

Or you could stroke it to a 396 (3.875 stroke)
Youll need supporting heads/intake/exh to match.

It could have near stock manners and roast the tires whenever you felt like it.
one thing for sure youd never go 350 again.
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Old Jun 18, 2011 | 04:00 PM
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Blindly choosing a cam without know the compression ratio is not going to yield very good results. As George already stated, thats a pretty small cam to consider.
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To About to order a package would like input.

Old Jun 18, 2011 | 10:32 PM
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Originally Posted by gkull
I think that you would be very dissapointed with a 204 cam when a wimpy L-82 cam was 222 duration stock

Just look up crane 272 or comp cams 262 or 268 numbers
http://www.summitracing.com/parts/CC...ize|5.7L%2f350
Something more like this for a cam?
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Old Jun 19, 2011 | 07:24 PM
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so would you suggest getting this cam and the rest of the package?
http://www.summitracing.com/parts/CCA-CL12-262-4/
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Old Jun 19, 2011 | 07:28 PM
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or even something along these lines?
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