For starters I would add a vss to that TH400. Other than that, first thing to do is raise and flatten y our idle timing and slightly raise the idle speed. On my cammed L31, I adjusted the throttle body minimu air rate screw to bring the IAC down to factory specs. Idle RPM is around 525-550 at idle currently,going up as temp goes down. Much better than the lag in the stock shifts. In about 2 hours I was able to clean the tune up to the point the Tahoe fires right up, idles well, does not stall, transitions to off-idle and wide open throttle without bogging and feels nearly as refined as if it had come stock. Not bad for a 268 cammed (110* LSA) 305 in my opinon.

Find CHEVROLET 5.7L/350 Crate Engines and get Free Shipping on Orders Over $99 at Summit Racing! Dec 12, 2005 · Vortec No-Machine Valve Springs! A little info back to the group, I came across the following valve springs and retainers from Crane Cams that increase lift clearance on Vortec heads without the need to machine anything. whats up? im new to the forum. trying to find a good cam for my 5.7l vortec. i already have a k&n intake, full exhaust, no cats, im getting my tune in like a week from nelson performance and i got 100shot of nitrous. i dont want to big of a cam cuz i still want good bottom end and i dont want it... .

Cammed l31 Surging and in gear idle issues; If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you ... Hey everyone, so ive read through a lot of different posts and have tried a lot of the different suggestions i have came across but nothing is seeming to fix this. I have ran the russ k idle config, i have messed with throttle cracker and follower. Up for sale is my 06 ve ss-v v8 6 speed manual ls2 6 ltr ,red alloy 19s 199,000 kms 3" exhaust with straight pipes good sound ss black leather interior regularly serviced chipped straight swap for a ve ss v8 cammed ute has to be manual with rego show me what got will send pics of my car apon request or $15,000ono has rego may swap for a 4x4 but ... Overview. The Chevrolet L31 5.7L Vortec cylinder head is the best flowing production head Chevy has made for the Gen I SBC engine to date. Because of this, it has become a very popular swap.

I can't believe that after performing a search on MCSS that no one has played with the ramjet cam, the cheapest of the GM line of no mods needed roller cams. I am looking to test one with CCC/CCLC but get hung up on the lobe separation of 109. It seems to me that the rule of thumb is to ...

Mar 31, 2017 · LS6 Valve Springs On A SBC L31 Vortec Part 2 Of Cam Swap. LS6 Valve Springs On A SBC L31 Vortec Part 2 Of Cam Swap. Skip navigation Sign in. Search.

Jul 16, 2015 · 1997 suburban 5.7 vortec zz4 hotcam 36lb injectors custom mapped ecu Mar 13, 2012 · How many of y'all have custom tunes? I had one done 2 weeks ago and I can't believe the difference. I had a hypertek on an older 02 5.3 but did the custom on my 07.

Mar 25, 2010 · Guide to Swapping an LS3 into your Street/Strip Chevy By Tom Bobolts March 25, 2010 The LS engine family has grown tremendously since the first LS1 left Detroit back in 1997. Mar 01, 2010 · In fact, GM installed real port fuel injection on marine versions of the L31 Vortec engines. The marine port-injection intake manifold accepts the stock Vortec throttle body and smog equipment. This Photo was uploaded by Fast355_album. Photobucket uses cookies to ensure you get the best experience on our website.

The first thing I would do to the L31(if money wasn't an option) would be the injection upgrade. The stock system has been proven to reliably feed 400~420 RWHP. You are looking at a grand-plus for that setup though. If money is an option, all I can reccomend is the typical go-fast mods. The L31 cams were kind of small from the factory, so start ... I went with a stock LT1 replacement when I cammed my Caddy for a couple of reasons. Mainly it was on the advice and experience of Impala/Caprice owners on the impalassforum.com who have WILD combinations and run the standard LT1 set without any issues. Jun 06, 2018 · Go to any dragstrip in America on any given night, and you will see a lot of fourth-generation Camaros and Firebirds. A natural drag racer with their fairly light weight, rear wheel drive, strong transmissions, and simple suspension, the mid-'90s “F-body" cars also featured a stout 350-cubic-inch LT1 V8. This engine featured a new distributor ... Dec 26, 2012 · I have my owners manual that says gap the plugs 0.060" and the original sticker on the radiator shroud says gap 0.040". Wondering what to do cuz when I originally put the plugs in I gapped them at 0.040.

i'm putting a late 60s 140 series corvair engine down in a 70 beetle convertible. reverse rotation cammed already, with the backwards bladed fan and larger pulley for the alternator to keep the belt happy and not throw off since its now the slack side and not the idler on the right side. L31. The Vortec 5700 L31 (VIN code 8th digit "R") is a V8 truck engine. Displacement is 5.7 L. It is the last production Generation I small-block from Chevrolet. The cylinder heads feature combustion chambers and intake ports very similar to those of the LT1 V8, but without the reverse-flow cooling. As such, the L31 head is compatible with all ...

Dyno Graphs. Xtreme Energy Camshaft™ Dyno Results Xtreme Energy Cams™ bridge the gap between Magnum street cams and race only cams. Xtreme Energy Cams™ provide increased torque, vacuum, response, and power while still providing quiet operation of the valve train and the durability required in daily driven vehicles. Lunati's 343 hp 305 Build-up. Objective. Using traditional hop-up techniques, Lunati's goal was to achieve maximum performance at an affordable price from the 305 small-block in a non-emission-controlled environment. The engine should be capable of running on the street, with decent idle characteristics and low-end torque. L31 vortec 350 single turbo, Its alive!!! ... The car has gone from a radically cammed big block that had about 8 inches of vacuum to a relatively smooth idling small ... HP Tuners Tune Repository Help 4.8L & 5.3L come inside... Looking for MORE than a bunch of stock tunes for 4.8L and 5.3L engines. I understand that alot of tunes are sent in but my guess is they are not all getting approved due to liability. Jul 12, 2016 · Increased power for your 1996 to 2000 350ci Chevy Vortec 5700 V-8 engine. See all 12 photos. John Cappa Photographer, ... Our engine started as a stock L31 with 65,000 miles on it. We had added a ...

The intake manifold is stock, has the GM MFI injector upgrade, a reworked stock throttle body and an 0411 PCM swap with HP Tuners. Also ditched the mechanical fan, added a pair of E-fans and an underdrive pulley I found on Ebay. I think its making decent power for just a little L31 350.

Mar 13, 2012 · How many of y'all have custom tunes? I had one done 2 weeks ago and I can't believe the difference. I had a hypertek on an older 02 5.3 but did the custom on my 07. Mar 13, 2012 · How many of y'all have custom tunes? I had one done 2 weeks ago and I can't believe the difference. I had a hypertek on an older 02 5.3 but did the custom on my 07. Chevrolet Perormance Parts ... LT4, L30, L31 Vortec heads,GMPP 290 HP engine- 1 Per Package Intake or Exhaust ... 7.178" Long- Used In All GM Performance parts Roller ...

Clay Smith Cams, home of Mr. Horsepower engineers world class camshafts and custom cams. If you need extra horsepower, performance and the muscle car sound, check out our line of cams. HP Tuners, the home of VCM Suite and the MPVI since 2003. Now enhancing these to new heights with a new feature rich VCM Editor and VCM Scanner, coupled together with the latest generation MPVI2, this is only tuning and diagnostic solution you’ll ever need for your modern OBDII vehicle. Up for sale is my 06 ve ss-v v8 6 speed manual ls2 6 ltr ,red alloy 19s 199,000 kms 3" exhaust with straight pipes good sound ss black leather interior regularly serviced chipped straight swap for a ve ss v8 cammed ute has to be manual with rego show me what got will send pics of my car apon request or $15,000ono has rego may swap for a 4x4 but ...

These particular lifters are what were used in every SBC Factory Roller - GM Engine for 1996-1997 L99, LT1, and LT4 ENGINES. ALSO, 1996-2000 CHEVY L30-L31 VORTEC TRUCK ENGINES AND CHEVROLET PERFORMANCE PARTS ROLLER CAMMED SMALL BLOCK CRATE ENGINES. These will also fit V6 model engines that were Factory Roller. JEGS crate engines feature a 36 month/unlimited mileage warranty. This engine was designed as a direct replacement for 1996-2000 Chevy & GMC pickups, SUV's, and van applications. These vehicles introduced the L31 5.7L small block featuring Vortec cylinder heads that were developed for maximum power and efficiency. Buy GM Parts 12499225 Hydraulic Roller Lifter for GM LS Series, Pack of 16: Cam & Lifter Kits - Amazon.com FREE DELIVERY possible on eligible purchases

I can't believe that after performing a search on MCSS that no one has played with the ramjet cam, the cheapest of the GM line of no mods needed roller cams. I am looking to test one with CCC/CCLC but get hung up on the lobe separation of 109. It seems to me that the rule of thumb is to ... Jul 16, 2015 · 1997 suburban 5.7 vortec zz4 hotcam 36lb injectors custom mapped ecu Chevrolet Perormance Parts ... LT4, L30, L31 Vortec heads,GMPP 290 HP engine- 1 Per Package Intake or Exhaust ... 7.178" Long- Used In All GM Performance parts Roller ...

We all know a cam swap is the first modification every LS owner should perform to an LS, but just how much is a swap really worth? With the goal of 100 horsepower, we plopped a junkyard 5.3L up on the dyno and ran a test. Dec 26, 2012 · I have my owners manual that says gap the plugs 0.060" and the original sticker on the radiator shroud says gap 0.040". Wondering what to do cuz when I originally put the plugs in I gapped them at 0.040.

For 1987 1/2 - 1995 Applications Need more power? This engine combination would be outstanding in your car, suburban, blazer, RV, van, truck, or 4X4 application. These engines are built with the seasoned heavy-duty Chevrolet small block. This unleaded fuel-compatible engine comes completely assembled, with valve covers, timing chain cover, oil pan, harmonic balancer, flex plate and throttle ... Chevy 350 — 355 HP (2 bolt) $3395 (Little less vacuum, single patterned cam but best sound.) Chevy 350 — 350 HP (4 bolt) $3795 (Best vacuum, dual patterned cam.) Chevy 350 — 355 HP (4 bolt) $3795 (Little less vacuum, single patterned cam but best sound.) THIS IS A LIMITED TIME SALE PRICING The normal price of these engines is $100 more.

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Dec 04, 2014 · LS engines respond amazingly well to camshaft upgrades, so we're comparing cams on a test engine to see which one yields more power! Check out the results here. Jul 16, 2015 · 1997 suburban 5.7 vortec zz4 hotcam 36lb injectors custom mapped ecu

Visit Our "What's New" page to get all the latest Chevrolet Performance News, Announcements, and Specials. We have some of the lowest prices on Chevrolet Performance Parts, Chevrolet Performance Engines, and Chevrolet Performance Transmissions. HP Tuners, the home of VCM Suite and the MPVI since 2003. Now enhancing these to new heights with a new feature rich VCM Editor and VCM Scanner, coupled together with the latest generation MPVI2, this is only tuning and diagnostic solution you’ll ever need for your modern OBDII vehicle. Find helpful customer reviews and review ratings for COMP Cams 26918-16 Beehive 1.075"/1.310" O.D. Valve Spring, (Set of 16) at Amazon.com. Read honest and unbiased product reviews from our users.

98000mile l31. 9.4:1 compression... (will be milling .040" off heads at time of cam install) Professional Products Air-gap intake, Edelbrock 750, carb and timing will be tuned at the track, Lunati 232/242 .510/.525" 110lsa 1.5 roller rockers, Hedman 1-5/8" longtubes 3" X-pipe with Dynomax bullets( ball and socket cut off and clamped using band clamps), electric water pump and manual steering ... Jul 27, 2006 · The hottest cylinder head on the small-block Chevy hit parade right now is the Vortec iron head. It's extremely affordable and flows a bunch of air for a stock production iron head with a 170cc ...

Jan 31, 2017 · For stock power production, the hot ticket is the L31, Vortec-headed 350 offered from 1996-’02 in truck, van, and SUV applications. In addition to the impressive head flow, the L31 also featured a...

Apr 16, 2010 · I have a 2000 Yukon with the 5.3L with about 170k on the clock. The engine is idling at around 1200 to 1500 rpm. Where should I start? Any ideas? Thanks, Zack

Oct 13, 2010 · I hear you. I think our EFI system, when factoring in the "extras" outperforms the typical carb combo. It includes ignition control with load&rpm based timing and fuel trims (meaning, I can specify different trim amounts at different RPMs and MAP values).

Before you spend the money on a L31,consider swapping to a LS engine. It would be easier/cheaper than switching over the spider injectors in the L31 to a single plane intake and throttle body or a marine intake,etc.A 6.0 would give you all the power you need.There are people on here that have done the swap.

Find helpful customer reviews and review ratings for COMP Cams 26918-16 Beehive 1.075"/1.310" O.D. Valve Spring, (Set of 16) at Amazon.com. Read honest and unbiased product reviews from our users. I've owned a 1995 K1500, L05 350 TBI since 1999. The existing motor is getting tired and I'm looking to purchase a new Vortec long block through Pace Performance. I plan to purchase a conversion intake manifold and retain my TBI. Visit Our "What's New" page to get all the latest Chevrolet Performance News, Announcements, and Specials. We have some of the lowest prices on Chevrolet Performance Parts, Chevrolet Performance Engines, and Chevrolet Performance Transmissions. .

Mar 25, 2010 · Guide to Swapping an LS3 into your Street/Strip Chevy By Tom Bobolts March 25, 2010 The LS engine family has grown tremendously since the first LS1 left Detroit back in 1997. Find helpful customer reviews and review ratings for COMP Cams 26918-16 Beehive 1.075"/1.310" O.D. Valve Spring, (Set of 16) at Amazon.com. Read honest and unbiased product reviews from our users.