Dorman 90mm ls6 intake. Intake 3 bolt to 4 bolt adapter MAP relocation kit Shave rear pillar down to fit Questions: Where does the brake booster line go to on the Dorman? Do the steam lines Choosing the right intake manifold for your can be tough with all of the available options. Dec 4, 2014 · The Dorman LS6 replacement intake manifold (denoted by the red line) delivered nearly the same power as the original LS6 (blue line). Feb 26, 2017 · Dorman LS2 92mm - Dorman revised the intake to fix the well known LS2 manifold flaws. Choosing between the LS2 and LS6 intake? Discover how the LS6 outperforms the LS2 with 489hp, 481lb-ft torque, and less need for costly modifications. My question is what size/lbs injectors to use, or will the stock injectors be ok??? Your experience, and input would be greatly appreciated. Mechanic tools & shop equipment. to/2KBRgwF Caspers LS2 to LS1 Throttle Body Adapter Harness - 108115 https://amzn. 600 valve lift. At the torque peak the TPiS manifold delivers 22 lb-ft + of additional torque. 0L 90mm Cathedral Port Intake Manifold with boost? C5 Tech - Intake manifold - Been looking into a fast 92/90 combo and came across the dorman ls2 intake. Street performance & off-road parts. Currently running: 98 Camaro SBE LS1, CNC ported and milled 243 heads, BTR Stage II LS1 cam, 1-7/8 long A stock LS6 intake manifold is a great choice or even the dorman LS6 replacement- it's kinda in the middle of the 2 intakes. I still run an LS6, with an adapter to run a 90mm T/B. com/threads/ls2-intake-vs-ls1-ls6-fast-78-90-intakes. Dorman Intake Manifolds Precision engineered for OE-level fit and function, the Dorman LS6 intake 615-900 is a durable, reliable, and high-performing replacement option for LS V8 350 5. Was going to install this but I’m switching platforms soon so it’s no longer needed. 289456/ worth maybe 15-20hp depending on cam and head geometry. 0L/364 Intake Manifolds, Fuel Injected In Stock Filter Options, Vendor In Stock Filter Options and get Free Shipping on Orders Over $109 at Summit Racing! C5 Tech - Atomic Airforce Intake 99 c5 Install/Throttle Body Question - Newbie any help is appreciate! I'm new to the LS1 engine. Don’t Even Think About Swapping Your LS Intake Until You Read This. to/2ro2GvN Caspers MAP Sensor Extension Harness - 109080 https Dorman LS2 Intake Manifold - 615-901 https://amzn. Flow rates are similar to the AI heads (though much larger intake port cc). From 5,500 rpm to 6,500 rpm, the LS2 intake offered as much as 10 additional horsepower, but the LS1 unit actually produced an additional 2 lb-ft of peak torque (471 versus 469 lb-ft). - I ordered a TPIS 90MM LS6 intake a month or so ago, and received it in the mail. You wouldn't need bigger injectors IMO unless you are really going to cam it up and spin 7K C6 Parts for Sale/Wanted - Dorman LS6 90mm Cathedral Intake Manifold - Selling Dorman LS6 90mm Cathedral Intake Manifold. 1-7/8" custom long tube headers with 3" collectors, no mufflers. He compared the Trailblazer intake to both the stock, cathedral port truck intake, and the LS6 Corvette intake. Stay tuned! Worst to Better in airflow on flow bench. We will be doing a back to back dyno test vs the oem LS6 manifold. This engine intake manifold was precision-engineered and durably manufactured to match the fit and function of the original manifold on specified vehicles. The limiting factory on the LS6 intake would eventually be the smaller throttle opening, as the LS6 was designed for the smaller (75 to 78mm) LS1-style throttle body, where the TBSS was designed for the later (86 to 90mm) drive-by-wire throttle body. Find CHEVROLET 5. 0L Corvette LS2 engine. " LS2 vs LS1 Intake Dyno LS6 vs LS2 Intake "After running the LS1 intake, we were curious to see how a factory LS6 manifold would perform. x 1. Shop now for fast shipping and easy returns! C5 Tech - LS2 vs LS6 intake results - Just got my April issue of Hot Rod magazine and what do you know they (Katech) are testing an LS2. C5 Tech - LS6 or MSD Atomic - I see some discussions with commentary but couldn't find any dyno comparisons. The truck intakes were designed to enhance low-speed power in the rpm range where Car parts for modern & classic cars. Shop Now at the Guaranteed Lowest Price! The LS6 will need the TPiS 90mm mod and in the end you spend more on the modified LS6 90mm intake than you do on the Dorman LS2 unit. I would have gone with a used FAST 102 if they were selling for $500 ish. 0L 90mm Cathedral Port Intake Manifold with boost? We Dyno Test 20 LS1 Intake Manifolds. 500 in. 000 in. High Black Plastic Includes Gaskets, Replacement Valley Bolts, Fuel Rail Brackets, Injector O-rings, and Instructions The Dorman 90mm LSX intake manifold has finally been installed! Here are some of my initial thoughts and more installation tips! C5 Forced Induction/Nitrous - Dorman Ls2 intake - 90mm - Anyone tuning or who has run the Dorman 615-901 GM LS2 6. I have a 99 FRC, ported 241 heads, Texas Speed Torquer camshaft 2232/234 . C5 Tech - Max power from stock ls6 manifold? - Heads are off my 02z and I?ve spoken to a few shops about my goals with varying responses. Considering how much power a stock LS6 manifold and throttle body have been shown to support, I would consider the TPIS modified 90mm snout LS6 intake manifold before spending 2-3 times that cost on a FAST 92/102 intake manifold. The short answer is, at that power level, you can run any intake you have and want. LS2 VS LS6 intake manifold - LS1TECH But what do you guys think? I also always liked this test here, where the LS6 intake had the STOCK throttle body and the LS2 intake even had a FAST 90mm TB! YET THE LS6 STILL PERFORMS BETTER! Test Description: New from GM 6. With a power tune. LS1Tech member 99 Black Bird T/A conducted an intake manifold test with LandSpeed Cylinder Heads, based off GMPP ported 243 heads. C5 Forced Induction/Nitrous - Dorman Ls2 intake - 90mm - Anyone tuning or who has run the Dorman 615-901 GM LS2 6. 595/. Stay tuned! C5 Tech - TPIS 90mm LS6 intake WORKS! - So after many months of being forced to run a lightly ported LS2 intake (long shady story), I finally decided to pull the trigger on a TPIS modded LS6, as luck would have it I found one on the forum (thanks to Mufflerbearing). Building a twin turbo kit for the car and had my eye on the high ram for when I build the cold side. Y pipe, with cat backs. C5 Tech - Dorman ls2 intake - parts needed 2004 Z06 - Thinking about going Dorman to replace the LS6 intake. Dorman Products - Aftermarket Auto Parts & OE Solutions - 615-901 : . The Dorman 90 seems to be getting good reviews, but I wanted to get some 1st hand feedback from anyone who might actually have it. I'm starting this thread to prevent more crapping of another thread. RX7 to get a bit more power and also to step up to a 90mm throttle body. I looked at it and thought Man, that is an ugly looking intake! Going from a stock unported TB ls6 intake to a 92mm TB 102mm intake was a good gain. Find CHEVROLET 6. Discover what to look for in an LS6 intake manifold, including key features, compatibility, and top buying tips for optimal engine performance. The 90mm TB on a LS2 is plenty adequate and obviously in this case shows a more intake only gain! Generation III External Engine - Talk me into buying a FAST 92mm intake - Looking at buying a Fast 92mm intake and Nick Williams throttle body and a few people have told me that it wont be worth it on my combo. Thanks!! Dorman LS6 90mm Cathedral Intake Manifold. I don't know much about it other than what I've scanned through on LS1tech in a thread titled "Intake Flow Numbers: 78mm LS1, 90mm TBSS, 92mm Dorman LS2 & 102mm Notice that everywhere from 2,700 rpms through 7,000 rpms the TPiS conversion of the LS6 intake manifold with a stock LS2 90mm throttle body outperforms the stock LS6 manifold with a 78mm ported throttle body. I have a 99 Vette I have performed a cam swap TSP Stage 243 ported heads with a TSP bald eagle stage 2 cam 227/234 @. The combo made 402 rwhp @ 6200RPM and 392 ft-lbs @ 4900 RPM. It is thoroughly tested to ensure top-quality OEM construction and superior reliability. 0 with a TBSS intake manifold and 90mm Nick Williams tb. His test showed the TPiS LS6 manifold flows similar to a FAST 90, flowing about 265 cfm at . Selling for $400 or best offer Original Price was $550 Used for 4,000 miles before swapped for a supercharger. It has an LS6 intake manifold now with a ported stock throttle body. Ideal replacement - this intake manifold was precision-engineered and durably manufactured to match the fit and function of the stock manifold on C5 Parts for Sale/Wanted - TPIS modified LS6 intake and throttle body - ***SOLD*** This is a never run TPIS intake and 90mm throttle body. Saw someone mention on one NA build they made ~ 485 whp and used a Dorman LS2 LS1 injectors, intake manifold gaskets & fuel rail fit the Dorman LS2 For drive by wire I don't think any mod'd are Dorman 615-901 LS2 Upper Intake Manifold Features: 90 mm Throttle Body Non-EGR 8 Ports Port Outlet: 3. So far I'm definitely feeling a power differe My first impression on the new Dorman 90mm LSx intake manifold. Are the dorman intake manifolds any good? The discussion is about the Dorman intake manifold for Ford vehicles, its performance, and comparison with the original Ford one, including its suitability Dorman Intake Manifolds Precision engineered for OE-level fit and function, the Dorman LS6 intake 615-900 is a durable, reliable, and high-performing replacement option for LS V8 350 5. C5 Tech - Finished modifying my TPIS modified 90mm LS6 intake, pics inside. Jeep & truck accessories. Jan 25, 2018 · Dorman 90 intake? I'm considering converting to the Dorman 90mm intake (currently have a stock LS6) as I'm not interested in paying $875 for a FAST 92 (that's ridiculous). . LS1 < LS6 < Dorman LS2 < 90mm TPiS/LPE snout LS6 < 92mm Fast The Dorman LS2 is pretty decent for the money. 3L/325 Intake Manifolds, Fuel Injected In Stock Filter Options, Vendor In Stock Filter Options and get Free Shipping on Orders Over $109 at Summit Racing! Dorman 90 intake? I'm considering converting to the Dorman 90mm intake (currently have a stock LS6) as I'm not interested in paying $875 for a FAST 92 (that's ridiculous). The Dorman 90mm LSX intake manifold has finally been installed! Here are some of my initial thoughts and more installation tips! Dorman LS Intake Manifold - 615-901 https://amzn. We put 4 popular combinations on the dyno to illustrate exactly how they perform. A better and less expensive option with ported 243 heads is the TPIS modified LS6 intake with the 90mm snout, that allows for the use of the 90mm throttle body or as noted above the Doorman LS2 intake manifold, then of course the FAST intake manifolds for 90mm throttle bodies. Free shipping on $109 orders. https://www. 5 LS6 heads, EPS 226 cam,Vmax Dorman ls6 intake, 1 7/8 long tube headers, CAI dual filter intake, and a BTR stage 2 camshaft kit. the intake choice is primarily based on the powerband you want to use. 90mm holly TB, with holly 5/8 fuel rails. 600, with and LS6 intake, long tube headers, stock TB with 11inch 295 30 Skip the LS2 intake, either LS6 intake or a FAST 78 or 90mm setup. Mild porting to clean things up. Explore a wide range of our Dorman Ls Intake selection. I understand buying all at once is ideal but I?d much rather do a lot now and some more later (maybe a year from now?) Lots of opinions about how much power you can get out of the Aug 16, 2025 - My first impression on the new Dorman 90mm LSx intake manifold. Next is a cold air intake, vararam snake charmer is pretty much the undisputed winner if you look at quarter mile times. Last edited by bbuddine; Aug 6, 2020 at 03:59 PM. Selling Dorman LS6 90mm Cathedral Intake Manifold. Is it worth it to swap intake manifolds or should I just work with what I have? Street strip car looking for mid 8's C5 Tech - LS2 vs LS6 vs FAST Intake manifolds - I have a failry stock car, just air intake and catback exhaust, but im about to finish off my my exhaust with headers and such. Wondering if the Atomic MSD is worth the cost anyone have dyno sheet comparisons? Most C5 General - TPIS 90mm LS6 intake manifold - I thought this was cool. 8 in. Get the Best Performance with FAST LSX Black Intake Manifold LS1/LS2/LS6 54039B parts at JEGS. This is a more cost effective FAST Engine is a SBE LQ9 6. Still waiting to hear final numbers of my GTO with the new setup. Both the original GM LS6 and Dorman intakes were mated with a 78mm throttle body; the FAST manifold (black line) used a 90mm throttle body for its test. Dorman Products 615-900 LS6 Intake Manifold made by Dorman Products, for as low as . Three Dorman test eventually including a ported one 102 FAST LSXST - regarded by many as the BEST plastic cathedral intake under 7,000 rpm Regarding the LS6 cylinder head the vendor will not be named as the focus is on the intake manifolds. Supposed to be like their ls6 intake but with a 90mm opening. 2004 Z06. So my set up is PRC 2. I got one of the new Dorman “LS2” intakes that is a $900 FAST intake copy, for under $400. Reason: uploading more pictures Richard Holdener has done LS engine dyno comparative testing with stock truck, tbss & the LS6 intakes. I know the price differences- LS6>LS2>LS1, but is there any other reason I should pick one intake over the Explore a wide range of our Dorman Ls Intake selection. Due to a few mishaps I didn't get to make a video like this where I could get back to back comparisons of my LS6 intake vs TBSS intake. I wanted to install it with my billet fuel rails, Katech valve covers, relocate my coils, etc. Hi guys, I'm putting together an LM7 for a turbo build in a project car. Obviously if I want this motor to fit under the hood (FB, 1st gen RX7) then I need to ditch the truck intake. You will notice better performance from an ls6 than with the ls2 intake. You can send your LS6 intake manifold to TPIS and have it modified to accept a 90mm throttle body for $350 or to LPE for $369 . If you want a 90mm setup and noticeable gains, then you're gonna have to pay to play and get the FAST setup. Shop now for fast shipping and easy returns! Here is my comparison of the Dorman 90mm vs the LS6 intake manifold with data logs using the HP tuners scanner. TPiS modified LS6 intake. 241 heads, ls6 intake, super old 1 7/8 stepped dynatechs, slp lid with flopack custom 3 inch y into flowmaster merge into 4 inch dynamax bullet, dumped before axle The uncorrected numbers were 404/381 On a different dynojet 4 years ago, all it had was slp flopack and stock exhaust minus a flowmaster and the 10 bolt, it made 315 and 325 torque. 7L engines found in certain late-model Cadillac, Chevrolet, and Pontiac cars. to/2ro2GvN Caspers MAP Sensor Extension Harness - 109080 https Good info to know. Find top brands, exclusive offers, and unbeatable prices on eBay. Thinking that the 75mm throttle body might be holding the engine back, I sent the LS6 intake manifold off to TPIS to have them attach their 90mm snout and installed a hand ported LS2 90mm silver blade throttle body and used the C6 bellow tubing for a stock look. And prior to the introduction of the FAST intakes (or the LS2) that is what some people with max effort heads & cam or stroker C5s used. Ideally, an LS6 intake manifold with a 90mm opening grafted to it would probably have been better. Here is a quote: There's been a lot of speculation on the internet that swapping the LS2's intake manifold with its large 90mm throttle-body might be a hot-ticket setup for older Dorman has released a new replacement LS2 intake manifold. I am selling my 90mm LS6 Intake manifold with TPiS 90mm big oval throttle body. 598 112LSA LS6 intake, long tubes, etc. The conversion to run the bigger throttle body was $350 plus shipping both ways for your intake. ls1gto. nnov, mar2ql, jqnqia, qp5h, d2kiv, em9f, v1arc, a2p9, lwkuwi, ezvu,