what a difference quality parts and a bit of experience make



what a difference quality parts and a bit of experience make

Postby grumpyvette » April 8th, 2012, 9:39 am

I had bob stop by with a friend who had a 1967 corvette that he had installed a really nice 427 big block with a 1/2" stroker kit
making it a 489 cid stroker , the engine looked really great as the owner had done extremely impressive paint and chrome detail work and accents and cleaned up the engine bay to show room condition.
the problem was that it ran like crap once the rpms exceeded about 5000rpm as he still had a points distributor installed, and had well worn points, these points were purchased only 3000-3500 miles ago yet they were well worn,the new replacement points were purchased at NAPA and comparing them side bye side showed obviously stronger construction.
the problem was easily traced to a set of defective ignition points.
Bob installed, and having never even seen the inside of a dual point distributor, prior to this car, bob has no idea how to install,or set up points, previously.
corvette dual points ,which it seems are very hard to locate at most local auto parts stores.
a dual point distributor is not difficult to work with but it is old school tech, the newer systems are usually more durable and take less maintenance, BTW be sure to lubricate the wiper pad on the distributors cam as a worn distributor cam on a 40-45 year old ignition is a common problem, in this case , installing two new sets of points and the car ran far better
on Corvette (Delco) dual-point distributors, each set of points is adjusted individually to 27-29 degrees dwell (by blocking the other set with a small piece of matchbook cover or business card), and with both sets operating, dwell should be 32-34 degrees.


you might want to watch this video on swapping to low resistance ignition wire

https://www.youtube.com/watch?v=bjpI6nACxlM

its the AMP load that heats and burns points, getting 20-25 k miles is very common before you notice any need to clean and reset points in my experience, youll want a dwell meter and a points file if your going old school ignitions
http://www.amazon.com/dp/B000N31ZTE/ref ... B000N31ZTE

http://www.amazon.com/Actron-CP7605-Tac ... B00062YUUS

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because of easy interchangeability between most SBC and even the BBC engines , the early dual point distributors can be, and frequently were a commonly swapped to ignition, upgrade, but most originally came in...
1957 283 Passenger 245 & 270 HP 2X4
1957 283 Corvette 220, 245, 270 HP 2X4
1958-61 283 Corvette 245, 270 HP 2X4
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http://www.mre-books.com/chevy/engines/ ... ition.html
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http://www.tispecialty.com/articles/article6.htm
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viewtopic.php?f=70&t=6778&p=21751&hilit=corvette+distributor#p21751
http://www.socalsacc.com/Ignition%20Timing.htm

http://www.centuryperformance.com/setti ... pg-90.html

viewtopic.php?f=69&t=2165

http://www.earlycorvettes.com/corvetteg ... 56to57.pdf

http://www.gofastforless.com/ignition/points.htm

http://www.summitracing.com/parts/ANM-CP7605

viewtopic.php?f=70&t=855

http://www.wernersparts.com/Distributors.htm

http://www.corvettefever.com/techarticl ... ewall.html

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HERES A PICTURE OF A SIMILAR DISTRIBUTOR ON A SBC ENGINE

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RELATED THREAD
viewtopic.php?f=70&t=251&p=299#p299
MALLORY SELLS A NEW QUALITY DUAL POINT CORVETTE STYLE DISTRIBUTOR #2664501
these are small base and easy to use with a tunnel ram intake which makes then very useful if you don,t want to spent the cash for a vertex magneto
IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
grumpyvette

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Re: what a difference quality parts and a bit of experience

Postby grumpyvette » March 17th, 2013, 12:51 pm

IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
grumpyvette

User avatar
Site Admin
Site Admin
 
Posts: 14105
Joined: September 14th, 2008, 1:40 pm
Location: florida


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