which spark plug suitable for my engine

Old 10-01-2010, 03:01 PM
Junior Member
Thread Starter
Join Date: Aug 2007
Posts: 10
Default which spark plug suitable for my engine

I need help in choosing suitable spark plug for my engine
The specification for my engine as following
SBC 383 with 10.8:1 CR
AFR cylinder head 210(AFR-1054)
Solid roller camshaft (LUN-60132) with 1.6 rocker arm
Advertised Duration 273 int./279 exh
Valve Lift with Factory Rocker Arm Ratio 0.578 int./0.585 exh
amal is offline  
Old 10-01-2010, 04:13 PM
Senior Member
Join Date: Mar 2006
Location: EUGENE,OR.
Posts: 3,408

I might get roasted for some of this, but here is what I have used/learned- many views on spark plugs here. (Kinda like valve lash threads here)...LOL

Here are few I remember: AC R45TS I think "TS" is tapered seat "R" is flat. This is a stock SBC plug.

NGK: BKR5E stock; the lower the number, the hotter the plug.

Bosch: F6DSR again stock.

not sure about hot/cold on your application due to set up; spray/no spray etc...

I use Bosch Platinum in my BBC... Why?? Ever try to start high comp motor in the winter w/ no choke? Fouled many over the years... I have noticed that platinum's are pretty hard to foul... & if they do, they will work the next day after dying out. JMO.
Scooterz is offline  
Old 10-02-2010, 12:07 AM
Senior Member
Join Date: May 2006
Posts: 2,044

I like scooters recommendations, any of those will be fine for your combo, but to add to it if I may.

If you plan on using a ignition box like a MSD 6AL or equivalent, tighten the plug gaps up a bit.

I like > .028 - 032 :wink:
cepx111 is offline  
Old 10-02-2010, 10:33 AM
Senior Member
Join Date: Apr 2003
Location: Brookings South Dakota
Posts: 244

We use NGK R5672A-8 and gap to .040
cncmotorsports is offline  
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service