SKU: 60468682159

COMP Cams Camshaft CB 291T HR-107 MT Th

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Description

COMP Cams Camshaft CB 291T HR-107 MT ThDesigned to deliver an aggressive, hard hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods, the Thumpr series' early intake valve opening and long exhaust duration create optimum overlap for that race car idle. The Thumpr grinds all require an aftermarket torque converter and lower gear ratio to ensure the drivetrain

Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods, the Thumpr series' early intake valve opening and long exhaust duration create optimum overlap for that race car idle. The Thumpr grinds all require an aftermarket torque converter and lower gear ratio to ensure the drivetrain always puts the engine in its powerband. Additionally, Thumpr camshafts typically deliver reduced vacuum at idle, making a vacuum canister, pump or hydroboost a requirement for vehicles running power brakes.

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Year Make Model Submodel
1967-1975 Chevrolet Bel Air Base
1967-1972 Chevrolet Biscayne Base
1973-1974 Chevrolet Blazer Base
1969-1972 Chevrolet Brookwood Base
1978-1980 Chevrolet C10 Big Ten
1975-1980 Chevrolet C10 Cheyenne
1975-1980 Chevrolet C10 Custom Deluxe
1975-1980 Chevrolet C10 Scottsdale
1975-1980 Chevrolet C10 Silverado
1968-1974 Chevrolet C10 Pickup Base
1968-1974 Chevrolet C10 Suburban Base
1975-1980 Chevrolet C10 Suburban Custom Deluxe
1975-1980 Chevrolet C10 Suburban Scottsdale
1975-1980 Chevrolet C10 Suburban Silverado
1975-1981 Chevrolet C20 Cheyenne
1981-1986 Chevrolet C20 Custom
1975-1980 Chevrolet C20 Custom Deluxe
1981 Chevrolet C20 Deluxe
1975-1986 Chevrolet C20 Scottsdale
1975-1986 Chevrolet C20 Silverado
1968-1974 Chevrolet C20 Pickup Base
1968-1974 Chevrolet C20 Suburban Base
1981-1986 Chevrolet C20 Suburban Custom
1975-1980 Chevrolet C20 Suburban Custom Deluxe
1981 Chevrolet C20 Suburban Deluxe
1975-1980,1982,1984-1986 Chevrolet C20 Suburban Scottsdale
1975-1977,1979-1980,1982-1986 Chevrolet C20 Suburban Silverado
1992-1993 Chevrolet C2500 Suburban Base
1992-1993 Chevrolet C2500 Suburban Silverado
1975-1981 Chevrolet C30 Cheyenne
1981-1986 Chevrolet C30 Custom
1975-1980 Chevrolet C30 Custom Deluxe
1981 Chevrolet C30 Deluxe
1975-1986 Chevrolet C30 Scottsdale
1975-1986 Chevrolet C30 Silverado
1968-1974 Chevrolet C30 Pickup Base
1967,1969,1971-1972 Chevrolet Camaro Base
1967,1969 Chevrolet Camaro RS
1967-1972 Chevrolet Camaro SS
1972 Chevrolet Camaro Z28
1967-1972 Chevrolet Caprice Base
1973-1976 Chevrolet Caprice Classic
1976 Chevrolet Caprice Classic Estate
1976 Chevrolet Caprice Classic Landau
1975-1976 Chevrolet Caprice Classic Sport
1973-1974 Chevrolet Caprice Estate
1975 Chevrolet Caprice Estate Wagon
1968 Chevrolet Chevelle 300
1968-1969 Chevrolet Chevelle 300 Deluxe
1970-1972 Chevrolet Chevelle Base
1968-1972 Chevrolet Chevelle Concours
1969-1972 Chevrolet Chevelle Concours Estate
1973 Chevrolet Chevelle Deluxe
1969-1972 Chevrolet Chevelle Greenbrier
1973 Chevrolet Chevelle Laguna
1973 Chevrolet Chevelle Laguna Estate
1974-1975 Chevrolet Chevelle Laguna Type S-3
1967-1974 Chevrolet Chevelle Malibu
1974-1975 Chevrolet Chevelle Malibu Classic
1974 Chevrolet Chevelle Malibu Classic Estate
1973 Chevrolet Chevelle Malibu Estate
1968-1972 Chevrolet Chevelle Nomad
1971-1972 Chevrolet Chevelle SS
1967-1970 Chevrolet Chevelle SS 396
1968 Chevrolet Chevy II Nova
1967-1974 Chevrolet Corvette Base
1967-1975 Chevrolet El Camino Base
1968-1974 Chevrolet El Camino Custom
1968-1974 Chevrolet El Camino SS
1969-1970 Chevrolet Estate Base
1973-1974 Chevrolet G10 Van Base
1976 Chevrolet G20 Beauville
1976 Chevrolet G20 Chevy Van
1973-1974 Chevrolet G20 Van Base
1973-1974 Chevrolet G20 Van Sportvan
1975-1976 Chevrolet G30 Beauville
1975-1976 Chevrolet G30 Chevy Van
1975-1976 Chevrolet G30 Hi-Cube
1973-1974 Chevrolet G30 Van Base
1967-1976 Chevrolet Impala Base
1975-1976 Chevrolet Impala Custom
1976 Chevrolet Impala Custom Landau
1976 Chevrolet Impala S
1975-1976 Chevrolet Impala Sport
1976,1979-1980 Chevrolet K10 Cheyenne
1976,1979-1980 Chevrolet K10 Custom Deluxe
1976,1979-1980 Chevrolet K10 Scottsdale
1976,1979-1980 Chevrolet K10 Silverado
1968-1974 Chevrolet K10 Pickup Base
1968-1974 Chevrolet K10 Suburban Base
1976-1978,1980 Chevrolet K20 Cheyenne
1976-1978,1980 Chevrolet K20 Custom Deluxe
1976-1978,1980 Chevrolet K20 Scottsdale
1976-1978,1980 Chevrolet K20 Silverado
1968-1974 Chevrolet K20 Pickup Base
1968-1974 Chevrolet K20 Suburban Base
1985 Chevrolet K20 Suburban Custom
1985 Chevrolet K20 Suburban Scottsdale
1985 Chevrolet K20 Suburban Silverado
1992-1993 Chevrolet K2500 Suburban Base
1992-1993 Chevrolet K2500 Suburban Silverado
1977,1980-1981 Chevrolet K30 Cheyenne
1981-1986 Chevrolet K30 Custom
1977,1980 Chevrolet K30 Custom Deluxe
1981 Chevrolet K30 Deluxe
1977,1980-1986 Chevrolet K30 Scottsdale
1977,1980-1986 Chevrolet K30 Silverado
1968-1974 Chevrolet K30 Pickup Base
1976 Chevrolet K5 Blazer Base
1976-1978 Chevrolet K5 Blazer Cheyenne
1977-1978 Chevrolet K5 Blazer Custom Deluxe
1978 Chevrolet K5 Blazer Silverado
1969-1972 Chevrolet Kingswood Base
1969-1972 Chevrolet Kingswood Estate
1970-1974 Chevrolet Monte Carlo Base
1973-1974 Chevrolet Monte Carlo Landau
1973,1975 Chevrolet Monte Carlo S
1969-1972 Chevrolet Nova Base
1973 Chevrolet P10 Van Base
1976,1979 Chevrolet P20 Base
1976,1979 Chevrolet P20 Step-Van
1970-1971,1973 Chevrolet P20 Van Base
1975-1989 Chevrolet P30 Base
1975-1985,1987-1989 Chevrolet P30 Step-Van
1970-1971,1973-1974 Chevrolet P30 Van Base
1989 Chevrolet R2500 Cheyenne
1989 Chevrolet R2500 Scottsdale
1989 Chevrolet R2500 Silverado
1988 Chevrolet R30 Cheyenne
1987-1988 Chevrolet R30 Custom Deluxe
1987-1988 Chevrolet R30 Scottsdale
1987-1988 Chevrolet R30 Silverado
1989 Chevrolet R3500 Cheyenne
1989 Chevrolet R3500 Scottsdale
1989 Chevrolet R3500 Silverado
1969-1972 Chevrolet Townsman Base
1988 Chevrolet V30 Cheyenne
1987-1988 Chevrolet V30 Custom Deluxe
1987-1988 Chevrolet V30 Scottsdale
1987-1988 Chevrolet V30 Silverado
1989 Chevrolet V3500 Cheyenne
1989 Chevrolet V3500 Scottsdale
1989 Chevrolet V3500 Silverado
1972-1979 Excalibur Phaeton Base
1975-1978 GMC C15 Base
1977-1978 GMC C15 Heavy Half
1975-1978 GMC C15 High Sierra
1977 GMC C15 Indy Hauler
1975-1978 GMC C15 Sierra Classic
1975-1978 GMC C15 Sierra Grande
1978 GMC C15 Street Coupe
1975-1978 GMC C15 Suburban Base
1975-1978 GMC C15 Suburban High Sierra
1975-1978 GMC C15 Suburban Sierra Classic
1975-1978 GMC C15 Suburban Sierra Grande
1968-1974 GMC C15/C1500 Pickup Base
1968-1974 GMC C15/C1500 Suburban Base
1979-1980 GMC C1500 Base
1979-1980 GMC C1500 Heavy Half
1979-1980 GMC C1500 High Sierra
1979-1980 GMC C1500 Sierra Classic
1979-1980 GMC C1500 Sierra Grande
1979-1980 GMC C1500 Street Coupe
1979-1980 GMC C1500 Suburban Base
1979-1980 GMC C1500 Suburban High Sierra
1979-1980 GMC C1500 Suburban Sierra Classic
1979-1980 GMC C1500 Suburban Sierra Grande
1975-1978 GMC C25 Base
1975-1978 GMC C25 High Sierra
1975-1978 GMC C25 Sierra Classic
1975-1978 GMC C25 Sierra Grande
1975-1978 GMC C25 Suburban Base
1975-1978 GMC C25 Suburban High Sierra
1975-1978 GMC C25 Suburban Sierra Classic
1975-1978 GMC C25 Suburban Sierra Grande
1968-1974 GMC C25/C2500 Pickup Base
1968-1974 GMC C25/C2500 Suburban Base
1979-1986 GMC C2500 Base
1979-1986 GMC C2500 High Sierra
1979-1986 GMC C2500 Sierra Classic
1979-1982 GMC C2500 Sierra Grande
1979-1986,1992-1996 GMC C2500 Suburban Base
1979-1986 GMC C2500 Suburban High Sierra
1979-1986 GMC C2500 Suburban Sierra Classic
1979-1982 GMC C2500 Suburban Sierra Grande
1992-1996 GMC C2500 Suburban SLE
1995-1996 GMC C2500 Suburban SLT
1975-1978 GMC C35 Base
1975-1978 GMC C35 High Sierra
1975-1978 GMC C35 Sierra Classic
1975-1978 GMC C35 Sierra Grande
1968-1974 GMC C35/C3500 Pickup Base
1979-1986 GMC C3500 Base
1979-1986 GMC C3500 High Sierra
1979-1986 GMC C3500 Sierra Classic
1979-1982 GMC C3500 Sierra Grande
1975-1976 GMC G25 Rally
1975-1976 GMC G25 Rally STX
1976 GMC G35 Magnavan
1974 GMC G35/G3500 Van Base
Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 60468682159

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4.1 ★★★★★
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Product Reviews
R
Verified Purchase
roys_fishing
New York, US
★★★★★ 1
Poor quality switches
Main power switch didn’t work and since I didn’t get a chance to install when I ordered it, I can’t return it! Once again Amazon gets my money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 28, 2025
J
Verified Purchase
Jeff krevsAmazon Customer
Los Angeles, US
★★★★★ 5
Highly recommended
This is the BEST harness for side shooters lights . I just wish the switch would light up but Awsome harness
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 8, 2023
S
Verified Purchase
SpartanGrad
Louisville, US
★★★★★ 5
Can't ask for more from a 7.1 or 5.1.2 receiver
Style: Receiver, Style: Receiver
My previous Yamaha receiver was 10 ys old, and was an entry level 5.1 model (RX-V373). I accidentally fried it by putting my phone's USB connector in. I have been wanting to upgrade for a while the last few yrs but waited it out until receivers have 8k pass through (so whenever 8k becomes more of a thing I can keep this new one a bit longer). The 3773 had 4k pass through when I got it 10 yrs ago, well before 4k became as available as it is now for example, which was one reason I held out on replacing as long as I did. This time around I decided to step up into the premium Aventage line of Yamaha. It was between this & the A4A, not a huge price difference, but I would have needed to replace my entertainment center since the A4A is too deep to fit. Didn't seem worth it & now I'm really happy with my choice. My living room set up (in a condo) has 2 surrounds, to add 2 more would require building mounts on the wall (couch is against the wall with 2 surrounds on side tables) which I don't want. This has 7 channels to allow for 2 Atmos front firing speakers which I got & love how immersive it sounds. Bi-amping the front towers is an option, but that uses 2 extra channels so the Atmos front speakers can't be connected at the same time as bi-amping. I experimented with biamping & biwiring & couldn't hear any difference so I have the fronts biwired, allowing for the 2 Atmos front connections. New features/improvements from my old receiver include more power/watts, lower THD & better sound, streaming music directly from the receiver with Music Cast, and it processes Atmos & DTS audio. One key feature all the Aventage models have that the RX ones don't is the 5th foot in the middle, which was designed & tested to improve the sound with more stabilization. Aventage also has a 3 yr warranty (vs 2 for RX). The top of the line RX model looks identical in specs which I also considered but it just sounds like this 1st Aventage model is slightly better with it its parts & sound quality, and not that much more. Especially since I got the A2A on sale for 999.95 (vs the 1200 price). I actually bought this for 1150 which was a teeny mark down, and then saw Amazon put it on sale for 999.95 shortly after (about 2 weeks). Amazon customer service was great when I called about that, and they credited the difference. Back to the receiver...2 subwoofers can be connected, and an amplifier for the 2 front speakers can be connected as well through pre outs. Probably more improvements but those are the main ones. Along with this receiver upgrade, I also upgraded my subwoofer & added a Nvidia Shield Pro streamer (due to it handling Atmos & 4k upscaling of lower hd content, which my Roku Ultra cannot do). My system now includes Polk TSI 400 front towers Polk CS20 center, Polk T15 surrounds (all of these Polk speakers are from 10 yrs ago as well & still work great for me, they sound better too with this receiver). I added Klipsch R-41SA Atmos front firing speakers, and upgraded from a Polk PSW505 subwoofer to an SVS SB3000 (night & day difference with that upgrade!). Have a Roku Ultra from a few yrs ago, and the Nvidia as well now. The TV also will be upgraded at some point, but I'm perfectly content with it now (is a 7 yrs old 55 inch 4K Sony Bravia). This receiver also processes Dolby Vision which I'd need a new TV for, as well as eArc which this receiver also has. Over time I will continue adding to my set up. A decent record player is next, and a current blu ray player (the one I have is rather old & only has 1080p). Then a new TV & A 2nd sub (will get another SVS SB3000). The last & most expensive upgrade will be the rest of the speakers. From Polk to B&W most likely, but when I get to this I will compare both at the same price point as I am still very impressed with the quality of my Polks for their price point. I also plan to add an amp (Emotiva most likely) to power the fronts. Another reason I was ok with the A2A watts per channel for now (100 with 2 channels driven for music, unsure what it is at 5.1.2 but it's plenty especially with the thunder the SVS sub provides even at low volumes, and the ability to boost dialogue in addition to the center channel. I'd rather get a dedicated amp for more music power than a higher priced receiver just due to more watts. Very pricey to do all of this at once (in particular the speakers & amp), but for now I am thrilled with how much better everything sounds with these phase 1 upgrades. Highly recommend it, if you are coming from an entry level budget receiver this can pump more life into your current speakers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 17, 2023
A
Verified Purchase
Amazon Customer
Waukegan, US
★★★★★ 5
Sounds fantastic and easy to operate
Style: Receiver
I used to sell home audio equipment a long time ago and I love this unit! Nice & clean look, the layout for inputs/output is standard and easy to see and the remote makes sense...well, to me it does lol. I had purchased an O***o unit because it's been good brand for a while...returned it because it was defective but I didn't care for it (you had to be a real audiophile to get into the setup and who has time for that?). The Yamaha is easy to work with and sounds fantastic. Make sure you don't go cheap on the speakers!
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Reviewed in the United States on March 30, 2026
N
Verified Purchase
N. Franke
Dallas, US
★★★★★ 5
Great when on sale
Style: Receiver
Update: I got a new Sony X90L TV and this receiver just doesn't like that TV or something. I've had at least 4 instances where the TV said there was no signal. The receiver was on and the proper input was selected. If I hit the menu button on the receiver, I could see that. No inputs on the receiver would work. Unplugging the power from the receiver and plugging it back in fixes the problem in every case. Based on my googling, many others have similar problems. Yamaha receivers are generally over priced I've noticed. And they seem to skimp on features, e.g. a receiver with an MSRP of $1000 doesn't have a single analog video input. I got this on sale for $650 and for that I'm quite happy. I had a Denon that I got pretty inexpensively, but I hated the Denon. Things didn't work, it was confusing, didn't sound all that good and didn't do HDMI input switching well. The Yamaha is a far better reliever in every way. It does cost quite a bit more but it's just so much nicer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 14, 2024

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