new 388ci question
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Originally Posted by rssshen vette
will can a 388ci stroker with a 274 duration roller cam work with ECU and a stock chip. Or do I have to have a custom chiop made for it ?
First advertised duration is but one small part of a cams profile. Lobe seperation has a lot to do with how the ECM will deal with the cam. What type of ECM and Motor would also play a huge role. IMHO you need to get the car tuned reguardless just because of the added CI's. When selecting you cam try to select a ECM freindly cam, typiacly 112-114 LS
Racer
Joined: Jul 2001
Posts: 359
Likes: 0
From: Russellville TN
St. Jude Donor '06
I'm sure you're going to run bigger fuel injectors so the stock chip isn't going to work. My 383L is running with 36lb injectors. You'll need to play with the timing map a bit also.
What year vette are you working on?
What year vette are you working on?
Team Owner
Joined: Sep 2001
Posts: 62,141
Likes: 1,729
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
An 85 comes with 24lb/hr injectors, so hopefully you dont need new ones. The quick answer is yes, you will need a chip burnt for the application, nearly everytime you change a cam and enlarging the motor will necessitate it.
Its better to state the duration @050" for the cam than just the duration.
Its better to state the duration @050" for the cam than just the duration.
