Visit The Dirt Forum for More Information

Author Topic:   4/7 swap cap
noknowledge
Dirt Newbie

Total posts: 4
posted April 27, 2005 03:01 PM  
our fine ruels makers have decided this late in the season to outlaw 4/7 swap cams. I don't have the time or money to swap the cam out of our motor. I was told by many people that they make a distributor cap for our HEI that keeps the wires in the stock order but fires odd for the 4/7 swap.

Nobody seems to sell the cap, I have called DUI, MSD, and a few others.....they all agree this cap is built already, but none would help me locate one..... can someone on here help?

john7771
Dirt Roller

Total posts: 14
posted April 27, 2005 06:53 PM  
Call Competition Products and ask for Roger, he is a sprint car driver that uses a 4/7 swap and is familiar with it. 800 233 0199

noknowledge
Dirt Newbie

Total posts: 4
posted April 28, 2005 08:32 AM  
John, I called this morning and nobody there knew what I was talking about, they understood what I had for a cam, and what I needed for a cap......but never heard of a cap that swaps the 4/7 (odd fire) inside the cap...... anyone else?? all the cam companies say this cap is out there, and the ignition people seem to agree this cap is out there but none know where to get one for me........

quote:
Originally posted by john7771:
Call Competition Products and ask for Roger, he is a sprint car driver that uses a 4/7 swap and is familiar with it. 800 233 0199


leapinlizard
Dirt Freak

Total posts: 402
posted May 02, 2005 06:48 AM  
Why not use a street rod cap that exit's the wires four on each side like a crab? In fact, it might be what they are called.

Ego Racing
Dirt Forum Champ
Total posts: 724
posted May 02, 2005 09:27 AM  
quote:
Originally posted by leapinlizard:
Why not use a street rod cap that exit's the wires four on each side like a crab? In fact, it might be what they are called.

This would make it REALLY easy for the to nail you. With the correctacap the first plug on the right front goes to the right front plug, the second with goes to the second plug and so on. If this was on a 4/7 swap motor the second wire on the right side and the third wire on the left would be going to the wrong plugs and the wrong side of the engine, it would be VERY easy to notice the swap.

leapinlizard
Dirt Freak

Total posts: 402
posted May 02, 2005 02:35 PM  
So wrap themn up in a "burn proof sustance" and tuck or tie them in place as not to come into contact with header.

Make it real hard to see and hope the official feels lazy.

You could cross the wires somewhere behind the engine so it would appear to head the right way unless you were looking really close.

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted May 02, 2005 02:53 PM  
You could also just try getting some of those shrink sleeves with numbers on them and put them on the wires but switch the 4 and 7 labels. Might fool your tech guy into just looking at the numbers and not actually tracing them to the plug.

Back to the Archives