Pre-ignition Problems vs High Compression
Thread Starter
Team Owner
Joined: Mar 2002
Posts: 44,651
Likes: 1,827
From: Huntsville AL
Pre-ignition Problems vs High Compression
I didn't want t hi-jack the Pre-ignition so I'm starting a new one. I'm ready to pull the trigger on my 327 350hp buildup but keep getting opinons that range from use flat top pistons only to I have no problem using dome pistons. Amazing how if you ask (engine builders included) 10 people you get 10 different answers.
My goals is to get 327 350hp performance out of this engine and get it right the first time. That has me using the TRW L2166 Dome pistons, 461 2.02 heads and the LT1 Cam (even thought it came with Hyd.
I've had 2 engine builders and 1 Vette shop owner tell me to use flat tops or I will have a Pre-ignition problem. Not sure I agree with all this.
Is anyone getting 350hp out of a 327 with flat tops?
My goals is to get 327 350hp performance out of this engine and get it right the first time. That has me using the TRW L2166 Dome pistons, 461 2.02 heads and the LT1 Cam (even thought it came with Hyd.
I've had 2 engine builders and 1 Vette shop owner tell me to use flat tops or I will have a Pre-ignition problem. Not sure I agree with all this.
Is anyone getting 350hp out of a 327 with flat tops?
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
So far you have the right idea. You can use the dome piston from the 340 HP 62 engine and be very safe with pump premium. Stay away from those that will say it wont work. Oh, and put that solid lifter cam in it, works fine with those 202 valve heads, 
If you get that far, get back to me as I have a few other nice tricks. 
If you get that far, get back to me as I have a few other nice tricks.
Racer
Joined: Dec 2004
Posts: 480
Likes: 12
From: St. Louis Mo.
So far you have the right idea. You can use the dome piston from the 340 HP 62 engine and be very safe with pump premium. Stay away from those that will say it wont work. Oh, and put that solid lifter cam in it, works fine with those 202 valve heads,
