I was all ready to fire up the new engine yesterday and could not get the #3 plug to go in without putting a dimple in the header. Does anyone know of a "header" type plug that will work with the afr 210s? Summit is telling me that Accel does not make a plug that cross references to a Autolite 3923 or like. This is a 14mm, 5/8 hex, 0.75 reach, gasketed plug.

thanks.

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70 Z28
397 sb
6 speed

do you have the angle plug heads? what header are you using? i will also be using the afr 210 so i'm interested in the answer to this question as well

The 210s are angle plug. I am using Doug's headers. I was using these same headers with a set of Dart Pro 1 angle plug and didn't have any problems.

The problem is only on #3 and it is sooo close. I might just dimple the tube a little if I can't find any plugs.

Try an NGK plug...they are like 1/4 of an inch shorter then traditional Ac/delcos...might get it to work.

I use 3 of the Bosch in my car. I have angle plug Pro Actions with Hooker super comps

My Vic Jrs recommended a Champion C-63YC or C-61C but when I tried to find them I was told it was an outdated number.
Instead the speed shop crossed them over to an Accel 765. Work great. they are the same 14mm x .75 reach, 5/8" gasketed as you need.

<font face="Arial,Verdana" size="2">Originally posted by AllGoNoShow:
Try an NGK plug...they are like 1/4 of an inch shorter then traditional Ac/delcos...might get it to work.</font>

I stopped by Advance on the way home last night and bought the one that cross-matched. It was the same length as the Autolite.

Heavy, thanks, I'll take a look at the Accel 765. Do you know how many heat ranges are available in that plug?

I've never had one plug stop me from starting a new engine before. This is a PITA. It WILL be fired up this weekend.



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70 Z28
397 sb
6 speed

<font face="Arial,Verdana" size="2">Originally posted by dcs13:
I use 3 of the Bosch in my car. I have angle plug Pro Actions with Hooker super comps</font>


Are the Bosch shorter than standard size?

What part # are you using?

I looked at the Accel 765 and they are listed as "standard", not "shorty".

just measured a 765. They are 2" from tip to gasket seat, maybe this will give you a reference.

The problem is that you are running a "street" type header. You need a "race type" header where the #1 and #2 tubes route OUTSIDE the others, insted of inside... Headman makes a great square port 1 3/4" that fits not only the heads but the car as well...

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1970 1/2 RS Z28 S.B., Pump Gas, Radials, Full Tails ( 3 1/2" ) 10.59 @ 129

[This message has been edited by Z COOKS (edited December 02, 2004).]

[This message has been edited by Z COOKS (edited December 02, 2004).]

<font face="Arial,Verdana" size="2">Originally posted by Goat:

Are the Bosch shorter than standard size?

What part # are you using?

I looked at the Accel 765 and they are listed as "standard", not "shorty".</font>

I will try to look at them tonight and get the part number. I will probably have to pull one out to look otherwise I would get it before work today.
I did a quick serach on the Bosh site and found this:
http://www.boschusa.com/AutoParts/PartFinder/partfinderResults.asp
I will confirm this as soon as I can

[This message has been edited by dcs13 (edited December 02, 2004).]

<font face="Arial,Verdana" size="2">Originally posted by Z COOKS:
The problem is that you are running a "street" type header. You need a "race type" header where the #1 and #2 tubes route OUTSIDE the others, insted of inside... Headman makes a great square port 1 3/4" that fits not only the heads but the car as well...

</font>

That's interesting. I have never heard that distinction before. So why does the routing of the #s 1 & 2 tubes designate them as "race " headers? Got a part #? I looked in Summit and they have over 200 listings for chevy headers and the description in the title heading is not very descriptive.

DCS, thanks, I appreciate that.

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70 Z28
397 sb
6 speed

[This message has been edited by Goat (edited December 02, 2004).]

[This message has been edited by Goat (edited December 02, 2004).]