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#1
03-25-2005, 11:08 AM
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I equipped my 57 GMC (with from the factory 347" Pontiac V8) with a junkyard HEI from a '77 400 Pontiac. I've seen HEI caps at car shows that have the connections re-routed internally so that the plug wire connections point directly at the plugs, eliminating the "can of worms" effect near the distributor.
Some have referred to these as "crossfire" caps, but my Google searching for "crossfire HEI cap" has yielded nothing but specs for regular caps. Three questions: 1. Does anyone know the correct name for these caps? Maybe the manufacturer's name? 2. Does a Chebbie HEI cap interchange with a '77 Pontiac HEI cap? 3. This engine is NEVER spun over 4000 RPM. Anyone heard of any problems with these caps in daily driver use?
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My Pontiac is a '57 GMC with its original 347" Pontiac V8 and dual-range Hydra-Matic. |
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#2
03-25-2005, 11:08 AM
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I equipped my 57 GMC (with from the factory 347" Pontiac V8) with a junkyard HEI from a '77 400 Pontiac. I've seen HEI caps at car shows that have the connections re-routed internally so that the plug wire connections point directly at the plugs, eliminating the "can of worms" effect near the distributor.
Some have referred to these as "crossfire" caps, but my Google searching for "crossfire HEI cap" has yielded nothing but specs for regular caps. Three questions: 1. Does anyone know the correct name for these caps? Maybe the manufacturer's name? 2. Does a Chebbie HEI cap interchange with a '77 Pontiac HEI cap? 3. This engine is NEVER spun over 4000 RPM. Anyone heard of any problems with these caps in daily driver use?
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My Pontiac is a '57 GMC with its original 347" Pontiac V8 and dual-range Hydra-Matic. |
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#3
03-25-2005, 12:04 PM
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The standard Chevy and Pontiac caps are the same.
The one you're talking about probably wouldn't be. The Pontiac rotates Counter-Clockwise. That cap is probably wired for the Chevy rotation - clockwise.
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#4
03-25-2005, 12:57 PM
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Never thought of that, but you are right. I'd have to be sure the cap was Pontiac specific. Thanks for keeping me from stepping in a hole.
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My Pontiac is a '57 GMC with its original 347" Pontiac V8 and dual-range Hydra-Matic. |
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#5
03-25-2005, 01:04 PM
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The crossfire caps(terrible name for an ign. product,Great name for my 2genF exhaust sys)were marketed bythe Magazine writer David Vizard and some other folks . I used to see them @ swap meets.They definately DID work on Pontiacs.you just had to think a little harder to wire them up!
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GOOD IDEAS ARE OFTEN FOUND ABANDONED IN THE DUST OF PROCRASTINATION |
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#6
03-25-2005, 02:27 PM
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as, one goes in six... 2 goes in 5...etc
__________________
  My Daddy bought me a car but all I got was this old Pontiac.
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#7
03-25-2005, 07:46 PM
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right on
__________________
GOOD IDEAS ARE OFTEN FOUND ABANDONED IN THE DUST OF PROCRASTINATION |
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#8
03-25-2005, 10:11 PM
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http://www.corvettefever.com/techarticles/18459/
Crossfire Manufacturing 116-B N. Mercer Ave. Sharpsville, PA 16150 (800) 458-3478 Crossfire Industries distributor cap (PN 7148-B) First guess: Out of business. |
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#9
03-26-2005, 07:23 AM
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FWIW: If you face #1 on the cap at 12 o'clock facing the firewall. You will have less spark plug wire crossing over each other. Plus easier to R & R as it is at the exact location every time without guessing if it's off one tooth or not.
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#10
03-26-2005, 08:12 AM
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">FWIW: If you face #1 on the cap at 12 o'clock facing the firewall. You will have less spark plug wire crossing over each other. </div></BLOCKQUOTE>
Thats a great tip, I never realized that. I always admired my LT1 cap as it is this criss-cross design also. I did not know anyone made a cap like this for the HEI, does anyone make one for a points distributor?
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 68 Firebird, trying a q-jet now. 434/10.5:1/997's/240-242 HFT/4L80E/2800 Yank/3.42's/ Vintage Air/ 13.0 @105 mph 70 Lemans, 350/350, A/C, mostly stock 14 Ram CC, 5.7 Hemi, 8-speed, 3.92 lsd 97 Trans Am, HPP Aug 2012 http://www.highperformancepontiac.co...tiac_trans_am/ ***Sold*** |
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#11
03-26-2005, 12:18 PM
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I have kept 8 - 1 across the firewall* soo long that I thoughts we all did that.
*NOTE: only 2 & 3 are crossing the middle. After some thoughs here, I think it'sa non-product for Poncho.
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12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct |
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#12
03-26-2005, 12:19 PM
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Stock Chevy has 1,8,4,6,5,7 crossing the center...they are hosed up.
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12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct |
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