Discussion in 'Engine & Performance' started by fredflinstone, Mar 25, 2013.
What are the best and most reliable new spark plug out there for a 1987 350 TBI engine ?
If you want the very best go to AutoZone and get a set of E3 plugs. With E3 plugs, it's critical that they be gapped at .034" - .036". No more and no less. Then you'll want to have a set of indexing washers handy, I prefer the Moroso brand, and install one thin washer on each plug. Finally, toss them all in the trash and go get yourself some AC Delcos.
He's not working on a Pinto.
I say AC Delco's for OEM GM Old School V8's.
No Joke though, Back in the day, when me and the street race boys had race motors and wanted them dyno tuned, which we usually did at least once then we'd get a print out of everything that was done to it. Down to the jets in the carb, the springs and how the dizzy was curved and all that good stuff. Once you have that stuff and what the settings are you didn't have to pay again, cuz you could do it yourself, and the jets and springs in the dizzy didn't change. So everytime we did a cam or head change, or a new motor build we'd drop it off at this race dyno tune place after we broke the motor in with a full tank of gas for about 2-3 days. They were good but hey were busy and expensive. You're talking, you'd get it back with no gas and a $300-$350 bill depending on what all they did to it.
But I shit when I seen the Spark Plugs. Motorcraft !!! I was pisssed. Called them back and said HEY WTF??? They laughed at me and said, Hey, settle down !!! What did you pay us for??? Well OK then, Go with it and if you're not happy, I'll put you brand new AC Delco back in on my dime, just do it. Sure enough. Never fouled a fuggin plug and the truck ran fuggin great. Changed them to the same Motorcrafts about every 3-6 months when I'd change my header gaskets.
I'm just trying to stir the pot, lol.
So, AC delco autolites are the best option. What gap do I set them to ?
No Autolites I was just joking with the guys, go with the AC Delco. Do you have an emissions label under the hood? It should tell you on there if you do what the gap should be.
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So I hate to revive older threads but has anyone seen Bosch in these engines? I've been chasing drivability issues and I go pull a plug to get an idea of the IGN system and how the engine is running and there's bosch plugs in the truck!
The plug is a orangish white and not overly worn but I've never seen bosch anything work on a domestic vehicle.
I've never seen Bosch anything work on anything!
I would replace them with factory Delco plugs, they are pretty cheap.
Cheapes bid is how the MT. D.O.T. purchases parts.
They had a run of them bosch plugs. The 427 Gas dump trucks would get so hot, it would blow the porcelan right off the metal hex head.
Only AC's the local stores can get are platinums. Hope they work as good as the coppers. Theyre $5.99 a plug but have a $1.50 ea mail in rebate til the end of the month.
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