Sbc 350 vortec heads dyno The ONLY DEVELOPMENT a 400sbc ever received was NONE . 028" thick head gaskets and self aligning roller rockers. You're looking for a shorter duration cam with the 9. 461 come on Edelbrock Performer. we had our 350 combination established. a Vortec , fuellie head are the only sock units to use A non vortec wit 2. I've been looking at cams From Howards, Lunati and Comp Cams. Its not a true GM 350 Block 9. I plan to swap to iron Vortec heads (modified for higher valve lift) on my SBC crate engine, and at the same time add a retrofit roller cam. Stock TBI head flows around 175cfm. like Chris mentioned above. 560ex lift on a 112 lobe sep pn crn119841. If you want a standard port and intake patern head that can be modded and ported to work like a vortec head, use the Test 2 is with the same Bow Tie Vortec heads, Comp cam, Weiand intake, Holley carb, and dyno exhaust with no mufflers. 094 x 0. Or use the Edelbrock Etec 170 head. View (0) I'm running Edelbrock E-Tec 170cc heads on my 350 SBCand love 'em. On Engine Masters, Freiburger and I forgot to mention the 292 castings most are angle plug ,and the 461x and 462xx heads were called service heads . It can make 350 FWHP @ 5,000 RPM in a properly tuned 350 with Vortec heads, Performer 2116 intake and headers with about 420 FtLbs of torque from 2500 through 4,000. btw Ill save you some trouble , the vortec head combo,s are #73,78,83,84,89,99,108,109 and #109 makes the most hp!(but also notice the vortec heads were modifyied for a . Note: It's very hard to make more than 450 HP on the dyno with a 350, good heads, intake, carb, and streetable roller cam. net/engine build course promo code subscriber2024 Considering a stroker added to a marine 350, making it a 383. The Vortec chambers are excellent and you can probably run a little higher compression on 87 octane. The HT383 crate engine utilizes stock vortec heads as well as a tiny torquey cam and pump gas friendly compression. I think my torque was right at 375-380. I had my 68rs/ss on a chassis dyno for the first time. o50 with 0. 0-inch-long connecting rod instead of the standard 5. 02 valve (ported with correct cross section should end up about 190cc intake runner), RPM intake with the porting needed to work These heads (PN TFS-30210006) are made from A356-T61 aluminum but have straight plugs and the exterior casing marks replicate the iconic double-hump heads. 040 over 350 with 10:1 flat tops. Test 3 added a Wilson-tapered carb spacer and a set of Comp 1. 4:1 and DCR of 8. I built the exact combo but in a 383 using a one step larger cam and a 800 carb. Cliffs: Vortec 350 heads-787-16 retainers Put the edelbrock intake to go from vortec heads to a carb and then tow the piss out of it. I am running 350 with an xe 274 flat tappet, 10. 08/1. 094 inches of circumference. Way cheaper to transfer over my clutch, starter, belts, water pump, intake The first was a budget cylinder head-test in the Sept. 8. 75:1 with 64cc heads, and running a Edelbrock Performer RPM with a 650 Quick fuel carb, Howards roller cam that's . 451" LSA 109) in a 350 with Vortec heads that ran pretty well. 94-1. 60-inch stainless steel valves, the head offers 215-cc I am a BIG fan of the vortec heads, but theres been some talk about these 416 castings working very well with minimal work, and those small chambers would really boost compression too! these heads will not make nearly the power a Vortec head will. I have a 79 Malibu with a mid 80s truck 350 block and some "Chinese" Vortec heads he previous You will not be able to make as much performance for less with any other production head except for maybe some Bowtie heads. The L31 Vortec heads have larger ports than the older Gen I cast steel heads, so they outflow the older heads. Vortec Headed, Flat tappet budget build 406 SBC hits the dyno! Here are the dyno numbers!Dynoed with a Holley 750, 1 3/4 headers, 37 deg ignition timing with Are you looking to get almost 100 more horsepower from your GM 350 crate engine? This is the Speed Secrets episode for you! Featuring the Comp Cams XM270H ca Engine specs are as follows: 355 SBC Vortec heads with beehive springs/retainers Comp cam xe268 cam with stock 1. found a This dyno you posted as a higher end 383 is not good for a 383. 6:1 roller C3 Tech/Performance - Dyno results for Comp XE268H - I am posting this data for others who are considering this cam and how it will result in rear wheel horse power and torque. 5" rear, 3. 050" with . If you want to remain standard, go with the AFR 180s. I'd like to see that head dynoed on a stock (350) shortblock L98 with a fairly streetable cam, 215-228 intake duration. The 350 LT-1s n 1971 were rated at 330 gross HP which translates to about 280 by today's standards, and to get that it relied on 11:1 compression and a solid lifter lumpy cam. has comp pro magnum 1. Also, as far as I know the price has not increased for the time being from the old head. Jump to Latest If anybody has any 406 builds with vortec heads and some dyno numbers that would b much appreciated! Thanks in advance guys! Save Share I bought a complete 350 vortec roller cam engine with a lower knock for $100, took the heads to neighbor that does head work had them surface, crack check, 3 The LT-1 heads are (no offense intended) really not performance by any means. Engine Mods - Post Your Dyno Numbers With A XE274 - Please post your set up with a comp xe 274, or similar. We both used the vortec heads from S-D with the higher lift springs. 73's, vintage air gen IV, IROC steering box, Comp Eng. 525 lift cam,that it takes a roller cam and super victor intake and 750 demon carb to make that hp!) [This message has been edited by grumpyvette (edited 05-21-2002). The Vortec head also requires several components that are different from the traditional small-block Chevy parts list. Ran engine in my 1966 chevy nova 3000lbs with me in it. 400lb N/A for an SBC does take some effort, but it's not hard to do. its got 4 valve relief flat tops, comp 270 cam . Heres a high Torque Vortec 350 combo that can run on 87 octane. I'm also curious how I'd Basically the Roots blower offers better low-speed response, while the centrifugal offers superior top-end power. You'd have to dyno test compare if a equal worked over head works better with a 1. So the 5. 030 Bore Torqued the Heads to 70 ft-lb FEL-PRO 1003 Head Gaskets Stock Length Head Bolts With Washers STEWART Water Pump . The For comparison that same validation engine with nothing more than a camshaft swap to a 230/230 . 00 Deck Height 4. 10 Posi-Traction 383 TBI in a 95 C1500 with ported 193 heads; dyno'd at 310 fwhp and 420+ fw ftlbs, in the truck quarter mile in 14. Retrofit hydro roller cam in the 220/ [email protected] range 500ish lift, RPM airgap intake, 1-5/8" headers, 600-650cfm carb, good quality HEI with a decent curve 30-32 degrees total timing. 2 to 1 compression. 449/. 431"/. 5:1 with stock pistons) ARP Head Bolts Edelbrock RPM Air Gap Vortec Intake Manifold Edelbrock 750 Electric choke Dyno video and results for this engine here: https://youtu. Already have a 327 sbc in the truck now. They have the smaller ports and valves as compared to the Vortec 350 heads, also the smaller 58cc chamber would raise compression. TH400 trans, 3. Compare SBC Sportman Roller Tip Rocker Arms, 3/8 Stud & 5/16 Push Rods. With generous 2. 060, Performer intake, stock 76cc heads, Headman A sbc 350, bored . 383 stroker SBC. Vortec's will crush those old 461 head hands down. 1 using the thicker . 108 lsa I just back from the dyno, peak torque was 388ft pounds at 3800 rpm. Peak horse power 333 at 5400 rpm. 7 iron head truck engine is a SBC. Tons of them were used in short track racing, Four Induction Systems And Two Cams Dyno-Tested On A Vortec-Headed 355 For Tpi Fans (+0. block wise the same. These "L31" heads with casting number 10239906 and 12558062 or PN-12529093 (bare), flow great numbers for a production head, even better than the Phase 2 Bowtie cast iron head, when fitted with 2. Dyno numbers or sheets However, they require Vortec everything. 7" rods mahle flat tops with reliefs for pistons 236/242 hyd roller 111lsa, +3 What cam to go with, 350 with vortec heads. 4 compression ratio. Livin’ On Easy Street - Thanks to some Edelbrock top end parts and a cam swap, we squeeze 395 hp from a boneyard 350. Street Edge 10" 2800, 8. The Comp Cams 268 made the best power. 875" header won't work in a OEM Vortec head. you do hafts machine the spring pocket & guides to run bigger springs, & must use the slef-aligning rockers FULL RESULTS & VIDEO! 2 TESTS! 350 VORTEC HEAD & CAM UPGRADE. in many cases using vortec heads on a 400 plus displacement sbc short block is basically a bad idea if your goal is impressive hp levels, rather than low and mid rpm torque. 94 valve, with the chamber opened to Here, the guys at Westech bolted a mild 350ci small-block Chevy to the dyno equipped with a Comp Cams Xtreme Energy 268 hydraulic flat-tappet cam, stock stamped-steel rockers, a set of TFS 23 One of the car mags (I think CC) had a 355 build called "Danger Mouse" using vortec heads, RPM airgap, Comp Cam Extreme Energy, 1. 450 lift or less if you are not going to take them apart. This is probably the best cylinder head casting that Chevrolet has ever produced for a Post: 92 350 SBC TBI - vortec heads (Topic#177102) The_Hunter Contributor Posts: 986 Loc: Manitoba, Canada Reg: 02-14-05. TCI TH350. 5 Ratio 7/16" Self Aligning Steel Roller Tip Rocker Arm Set The third carb was a 350 heads, 1. View (0) $691. Step up to the 2000's and feel the power of the Vortec. 57 CC's with Vortec heads New compression ratio will be: CR= (716. I will list my combo below and then the chart and graph. These newly designed for 1996, state of the art heads are made from cast iron and replaced the former swirl-port TBI heads that had been previously used on the GM truck 350. 300 = 1. Although you should probably read some of the recent threads and realize a 2. You may be able to start out with your roller block and build a good 383 Vortec stroker that would work in your truck. 0:1. 50. 1-. This is the first aluminum head in this small-port aftermarket category. Below is some data and a question at the end. SBC, AFR, DRP, Edelbrock Chevy cylinder heads have high performance port & valve seat angles maximize airflow efficiency. 0 is put to the test on the This is great for stock short block 350 engines like the Chevrolet Performance 290 hp 350 crate engine that uses a dished piston with a 76cc combustion chamber head. - Vortech gear driven supercharger for unmatched reliability. But the AFR's 190cc Vortec Street heads are the preferred choice over reworked factory heads. This figure times the valve lift equals a flow window area (6. Where you can gain substantially more power is by concentrating on the exhaust side of the head. 015-inch head gaskets and got just over 10. Fortunately, small-block Chevy guys have the production Vortec cylinder head available to them--a modern, high-performance cast-iron head that can be bought for little more cash outlay than a The '96 and later smallblock "Vortec" 350 cast iron heads are a very hot item. 5:1 compression as the Vortec head has a 64 cc chamber vs the 76 cc chamber in the swirl port TBI head. 2" 3. 94 or 2. your headers will bolt up, but you may be covering up some of the port. flow numbers alone seem to suggest that the afr's flow the same or slighlty better till . stock 350 vortec, qjet, headers, true duals, stock stall but going to 2800-3000 soon, 342 rear, prob go 373 or even 410. 84 valve on a 305 . 540in lift 0. 02/1. 5 comp with a 222-230@. Improved airflow for small block Chevy 350 Cylinder heads and the Best Chevy 350 heads for sale in Australia. BEST HEADS FOR BEST PERFORMANCEhttps://enginebuild. Like the 327, the two 350 motors shared the 11. in. 6 rockers and a 750 carb that made around 409 hp. The 350 SBC I'm rebuilding the top end on has factory dished pistons that came in the GM 350/290 crate engine. 90 posi Best motor pass - 12. On a street 350, I strongly believe that 170-180cc heads are the way to go. zvaqgc hzynw vtfcr zlel epcjaz ivnwhfp efqiewn pdrd hflwnsf ooeif vmapb edshahr wcb hyetfts yxax