does anyone that has SLP shorties know what heads WONT work with them? looking to add sportsman II's or TFS 23's. is it a NO for all angle plug heads? the headers in question are the 1 3/4"

 

I can't answer specifically about the heads you list, but I can state that I have 1-3/4" SLP's and have used them with both Corvette aluminum and AFR 190's (both with angled plugs). I can use standard length spark plugs too, although some require the use of a modified spark plug socket.

Tom, if you haven't already, maybe you should post your question on the Tech/General engine board. You should see a better response rate there with this question.

 

I'd say so. I don't have any experience with the SLPs, but the full length 1-5/8 Hedmans with Sportsman IIs don't fit. Not w/o the short plugs. I've been told that unless you're looking for the extra 10 hp that the angles get you, just get straight plugs. A lot of the time angles make changing plugs easier, but most hedders are designed around straight plugs so they can get in the way of angle plugs.

 

I doubt its much help but i've got stock LT1's with regular angles and they fit

 

I have canfield heads with angle plugs and they required me to put a dent in # 8 primary just to get the plug in,the boot has yet to arhc that i can tell but it does get pretty burned up.
And nobody yet has a 3/4 inch reach short spark plug
# 5 is also very very close.
But remember not all heads have plugs in same location.
A friend of mine uses dart angles and has no problem.

 

I know for a fact that the SLP shorties 1 3/4 will fit the Sportsman II angle plug heads. I had them.

I know for a fact that the SLP shorties will not work on the Brodix Track 1 heads. I have them. Thats why the turbo's are now bolted the the Track 1's.

Sorry, can't help with the AFR's.

Hope this helped.

 

any one with the TFS 23'. my other car is getting the full length hooker supercomps, any angle plug head fitment probs known of there?