Pulley recommendations
Thread Starter
Burning Brakes
Joined: Oct 2001
Posts: 1,004
Likes: 102
From: Buffalo Grove IL
St. Jude Donor '11
Pulley recommendations
Stock 15 A8 (except for Afe intake and x-pipe). Looking at options for a pulley that won't murder the blower but will provide some kick. Don't want to go with a 2650 at this point.
Moderator
Joined: May 2010
Posts: 15,275
Likes: 4,210
From: Northern Illinois
2023 Corvette of the Year Winner - Modified
2022 C7 of the Year Winner - Modified
St. Jude Donor '18 thru '25
I had one for awhile but car ran hotter with it and wasn't worth minimal gains
Intermediate
Joined: May 2022
Posts: 38
Likes: 14
I am running an ATI 15% lower on a 19' z06 and manifold temps rise quite a bit when sitting still or when doing back to back pulls but it cools off relatively quickly and returns to decent manifold temps once the car is moving.
So far happy with the modification, still itching to get a 2650 though.
So far happy with the modification, still itching to get a 2650 though.
Thread Starter
Burning Brakes
Joined: Oct 2001
Posts: 1,004
Likes: 102
From: Buffalo Grove IL
St. Jude Donor '11
Pro
Joined: Oct 2020
Posts: 671
Likes: 423
From: Ramsey, NJ
I went with a 2.3 GripTech pulley on my 19Z M7. I have an AFE CAI as well. ECS installed and tuned. Car made 661 WHP and 617 WTrq on their hub dyno. Very happy with the results. It pulls noticeably harder.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Le Mans Master
Joined: Mar 1999
Posts: 6,029
Likes: 85
From: Palm Coast, FL
Racer
Joined: Dec 2017
Posts: 369
Likes: 148
From: Wellington Fl
On my 2015 M7 ZO6, I had similar setup as you describe ( AFE CAI, Xpipe), I also have Akra cat back & ported MAMO TB.
Putting on a 15% OD pulley gave it plenty of "kick". Was fun for street driving but limited top end due to heat soak. So while the comment is correct re: a dimishing return when you add a pulley to stock motor you will definetly get a far stronger TQ pull at lower RPMs compared to stock.
Trying to rember, I believe my numbers were 621HP / 651 TQ to the wheels. The TQ would hit very low in the RPM range ....blow the R888R tires off in second gear. Non the less, made it fun to drive. I recently moved to a 2650 ( so will you .... smile).
Putting on a 15% OD pulley gave it plenty of "kick". Was fun for street driving but limited top end due to heat soak. So while the comment is correct re: a dimishing return when you add a pulley to stock motor you will definetly get a far stronger TQ pull at lower RPMs compared to stock.
Trying to rember, I believe my numbers were 621HP / 651 TQ to the wheels. The TQ would hit very low in the RPM range ....blow the R888R tires off in second gear. Non the less, made it fun to drive. I recently moved to a 2650 ( so will you .... smile).
Advanced
Joined: Dec 2010
Posts: 73
Likes: 20
From: St. Louis MO
2019 M7 car. On a mustang dyno I went from 544rwhp w/ x-pipe, mambo throttle body, AFE to 622rwhp adding TSP headers/no cats, and E85. I would guess thats about 685rwhp on a dynojet.
Drifting
Joined: Nov 2002
Posts: 1,651
Likes: 125
From: laguna niguel ca
I’m running a maggy 2300 with a 5% lower
pulley. No heat issues. Kooks LT, ported snout
95mm zr1 tb, Afe intake. Im at 14 lbs of boost..
New ported LT 4 heads katech delete plate LS7
lifters and trays, chrome moly push rods, and an X tank
702/724rw on 91 octane. IAT’s are low. So the 5% pulley
worked for me
pulley. No heat issues. Kooks LT, ported snout
95mm zr1 tb, Afe intake. Im at 14 lbs of boost..
New ported LT 4 heads katech delete plate LS7
lifters and trays, chrome moly push rods, and an X tank
702/724rw on 91 octane. IAT’s are low. So the 5% pulley
worked for me
Safety Car
Joined: Nov 2011
Posts: 3,715
Likes: 343
From: Norman OK
19 C7Z here, base lined at 562rwhp bone stock on some 93 octane. Added Halltech CAI, Mamo V2 PTB and AWE catless x-pipe. On same 93 octane made 596rwhp. Went back and added DSX flex sensor and tuned on E40 and added a LSx style 160° t-stat. The car made 642rwhp, result was low due to a poor as tune from a crappy tuner. Got with Ryne Cunningham, cleaned up tune and got car running right along with having the TCU unlocked. Car was running a 7.49 60-130 before Ryne tuned it.. For the last round of mods I went with Griptech 2.3" upper along with Cordes 5" CAI and Cordes Expansion tank. Ryne touched the tune up one last time and car put down a 6.53 60-130 and then ran a 10.4 1/4 mile at 134mph. Math says the car is making near 700rwhp now and is running E50 on the stock fuel system.
