You are browsing camaro6 
04-07-2021, 02:41 PM
|
#1 |
 Drives: 2018 ZL1 Join Date: Jun 2020
Location: Louisiana
Posts: 121
|
Upper Pulley Question
So, I was looking at the Weapon X chart for LT4 pulleys and balancer combinations, many on this forum don't want to lose their warranty by tuning.
I can see where a 2.31 upper pulley would be enough of a change to warrant a tune certainly, however would a 2.40 pulley require much more fuel over the stock 2.50 ??? In another words, would a 2.40 require a tune or is their enough area in the stock tune table to handle spinning the blower a little faster than stock? Curious. |
|
|
|
04-07-2021, 05:53 PM
|
#2 |
Drives: '17 ZL1 M6 Join Date: Apr 2021
Location: Earth
Posts: 108
|
I would definitely tune with a pulley size change
|
|
|
|
|
04-07-2021, 09:01 PM
|
#3 | |
|
Drives: 18 ZL1 Convertible Join Date: Jun 2019
Location: NJ
Posts: 118
|
Quote:
|
|
|
|
|
|
04-07-2021, 10:07 PM
|
#4 |
|
Coupe Newbie
Drives: '23 CT5-V BW, '21 Corvette HTC Join Date: Jul 2011
Location: Columbus, Ohio
Posts: 3,469
|
Anytime you jam more air into the cylinder you have to consider timing along with the air/fuel ratio.
__________________
 |
|
|
|
|
04-08-2021, 07:12 AM
|
#5 |
|
Oh Oh it's Friday Night!
Drives: 2018 ZL1 1LE Nightfall Gray Join Date: Jan 2018
Location: Walton Woods
Posts: 1,075
|
You need a tune to be able to effectively utilize the change in airflow from a pulley change. Otherwise it is not worth the mod and could result in an overly lean condition.
__________________
2018 Camaro ZL1 1LE NFG; ARH 2” headers, catless mids, ARH full exhaust, Lingenfelter 18% lower pulley, ATI Harmonic Balancer, Roto-fab CAI, EE-catch can, TM ported TB, NX Lid, BMR strut tower brace. Aeroforce dual pod interceptor gauges. Tuned by Vengeance Racing!!! 644 HP @ 6250 rpm / 689 trq @ 3660 rpm
Four that wanna own me Two that wanna stone me One says she's a friend of mine... |
|
|
|
|
04-08-2021, 08:48 PM
|
#6 |
 
Drives: 16 camaro M6/ 18 ZL1 camaro A10 Join Date: Nov 2015
Location: MD/PA LINE
Posts: 202
|
I put a 2.30 pulley on without a tune with no problems but to really get the most out of it you probably want to get a tune for it. Just putting it out there I installed a 2.25 pulley and it cleared the blower snout just fine but it's tight, only about .030 clearance.
|
|
|
|
|
04-08-2021, 11:51 PM
|
#7 | |
     
Drives: 2019 ZL1 Join Date: Mar 2019
Location: NJ
Posts: 1,537
|
Quote:
Thats really bad advice... No problems is very vague...Never do anything that can possibly change air/fuel without getting a proper tune. |
|
|
|
|
|
04-09-2021, 06:21 AM
|
#8 | |
|
Oh Oh it's Friday Night!
Drives: 2018 ZL1 1LE Nightfall Gray Join Date: Jan 2018
Location: Walton Woods
Posts: 1,075
|
Quote:
__________________
2018 Camaro ZL1 1LE NFG; ARH 2” headers, catless mids, ARH full exhaust, Lingenfelter 18% lower pulley, ATI Harmonic Balancer, Roto-fab CAI, EE-catch can, TM ported TB, NX Lid, BMR strut tower brace. Aeroforce dual pod interceptor gauges. Tuned by Vengeance Racing!!! 644 HP @ 6250 rpm / 689 trq @ 3660 rpm
Four that wanna own me Two that wanna stone me One says she's a friend of mine... |
|
|
|
|
|
|
|
|
|
Post Reply
|
| Thread Tools | |
|
|
