ElSpa

I have a crack spark plug and the deivery time hre in Europe is 4 weeks+.
Can somebody please post a cross reference part number from another manufacturer NGK, Denso, Bosch so I can replace it till the GM one comes ?

Regards,
Michael

juanvaldez

Try this for LT1 (non-Z06)

NGK TR55 (stock number 3951); NGK TR55IX (stock number 7164); Autolite 764; Champion RS14YC6 (stock
number 13); Denso IT-16 (stock number 5325)

ElSpa

I have some it16 left from my Mustang...they are shorter then the c7 plugs...ITV16 seems to be the one (long reach)...
Anybody can confirm ?

ElSpa

OK I can cofirm now that the C5, C6 spark plugs (41-110, TR55, IT16, etc) doesn't work on the c7. The c7 ones are longer.
Only cross reference I found for th C7 acdelco 41-114 is Denso ITV16 and it does work.

Higgs Boson

NGK 6510 is the right application for the C7. Same style plug as Ford's Coyote. The old LS plugs (TR55, etc) are incorrect.

bob guzzy

LTR71X is the NGK plug I have had them in my C7 for nearly 5500 miles.

I had a hard time finding them early last year.

Higgs Boson

ltr71x = 6510 btw its "I" not 1. ;-)

MindBend

Third time NOT a charm! Got plugs at Autozone (NGK) not even close....to short, must be LT1 plugs. Summit Racing sent Champion iridiums and are same size...no deal.
Got the Denso ITV16 and its close, but shorter than Delco on both ends. (See pic)

Not sure how much the delco sits into the chamber, or how critical the exact length is, but definitely not the same. Anyone?

Some things SHOULD Ben easy.

Thx