Back in the late 60's, I had a '56 Chevy with 327, dual 4's, fuellie heads, 4 speed, 4:11 rear end, cheater slicks and the Duntov 30/30 cam. Valve adjustment was done with engine hot and running with a feeler gage and wrench, got hot on the fingers but worked. Very fast and rpm responsive, and just to show off, would put a dollar bill on the dash to see if the passenger could grab it before hitting the floor under a hard launch. Most of the time I would keep the bill. It would get about 8 miles a gallon but at 30 cents a gallon for gas and 60 cents for a quart of oil, it was game on! Crazy fun times and thanks for keeping the ole' Duntov 30/30 alive.
How are you using a feeler gauge when the engine is running? Gm tech at dealerships, Some anyway had instructions on doing it while running. must have been x amount of a turn backwards from 0 lash. Guess with gentle ramps it was forgiving? I always do EOIC one cyl at a time so I know its right.
I would have to say the 283 in the 57 Corvette. Really classy body, mechanical fuel injection. I’m NO cam expert, so please know I stand to be corrected. But from what I’ve read so far, arguably, the 283 benefitted from the Duntov cam grind the most. I’ve seen pics/videos of Nova’s with the front wheels off the ground a few inches with a Duntov 283. Very impressive 🇦🇺👍😎👍🇦🇺
1968 Chevy 283 Powerpack Punched out to 301,, Long tube Headders, glasspacks,,My Grandpa Truck..3 on aTree in his C10 pickup,,30-30cam!! Loved that Man and good ol days,,You have new Subscriber..
My dad had a 55 Chevy in high school. Said it had a small journal 283 punched out to 302 with the 30/30 solid cam and a 4 speed Muncie. He talked about it a lot. I sure miss him.
That’s what it is all about buddy! Thanks for sharing! Intake @.050 Cline 104.0 Dur 225.3 Open 8.5 Close 36.8 Lb Area 24.64 Lb lift .312 Vlv lift .467 Rar 1.5 Lb sep/adv 107.1 Overlap 9.5 Exhaust Cline 110.3 Dur 223.3 Open 42.3 Close 36.8 Lb Area 24.34 Lb lift .310 Vlv lift .466 Rar 1.5 Lb sep/adv 3.1 advance
All 283s were small journal and all but One last year of production 327s were small journal. Only Large Journal 327 is 1968. Interesting cam specs. Wonder how the old Duntov 097 would work in a 350?
Just found your channel, really appreciate the straightforward engine runs! I’m building a 377 stroker (virgin block 383) for my ‘67 C20 right now, and it’s nice to hear what different combos sound like. Also I’m just north of Seattle and it’s great to see someone doing this nearby. Favorite factory engine: ‘69 Camaro Z/28 DZ302 crossram. I’m building one of those next!
Fastest car I drove was a '69 Camaro with an LT-1 out of a '69 Vette. Don't know the exact specs, it wasn't stock. Test drove it for a client. It smoked both rear tires through an M-22 in third gear at 100 m.p.h. It was a monster.😬
Sounds great but hydraulic just does not do it for me solid like it was designed All and all sounds good. Lot of people think oh got to check valve adjustment so what your also seeing how everything looks. That's my opinion and I'm stinking to it Happy motoring.
Hi James, just picked up a 51 Merc. Much planning! Would love to have that baby in my Merc. If I don't win the giveaway(lol) perhaps we can talk to build a 350. Go Texas Rangers!! lol
66-67 chevelle with either a 327 or 396. I'm building a 66 right now. Wanted to use the Duntov 30/30. But the owner wanted a hydraulic camshaft. I would love those specs and have it made for this engine. Great channel you have me and my 2 sons watch it while we build this car. Where would I have the camshaft made? I have 65 c-10 next and it needs the engine done.
58 283 270hp 2-crappy 4bbls I think mine came with an 097, but they sound pretty tame. This might work well, who wants to rev to 7k and adjust lifters and hear clatter. Hydaulic flat 3030 sounds like a nice alternative for a "driver' 58 vette
This would work real well and make more torque for st driving Id think. If you dont care for solids that is Love the lash noise....the myth of having to adjust them all the time is just that, a myth Those locknuts on the rocker arms were meant to be a 1 time use piece only. When adjsting lash use new ones, that way they never back off and get loose. Wish I knew that back in the day
Mechanical 30/30 cam is a .485/.485 @.050” 254/254 adv 314/314 LSA 114 Hyd version would be close to: .465/.465 @.050 244/244 adv 300/300 LSA 114 Both are low lift long duration cams. .485/.485 @.050” 238/238 adv 290/290 LSA 112 would be a good substitute
@@BlindSideMotorWorks Bills cam is pretty small directly compared to the Duntov 30/30 and by closing the intake valve at 36.8° you would be compression limited on pump gas due to cylinder pressure. As a rule you never want to have less duration on the exhaust side so 225/223 is a red flag 🚩
@@HeadFlowInc Not always...look at the open/close specs of the exh valve. I love the Isky 280 mega for a hot st hft cam. 485 232 280 108. 10-11 to 1 sbc dual plane 650 DP HEI curved it will boil tires, sound good and drive anywhere Id go for runs 100s of miles, ran my pool routes with it (67 Camino) all around fav st grind. How is the Blazer running?
@@BlindSideMotorWorks I have actually run a cam profile very close to that in my daily driver Holden 308 red motor stroked to 340ci forged chev pistons, forged chev h-beam rods, ford Y-block crankshaft 11:1 compression. Chev grind #H0726 on a 1968-88 Holden 253 308 core Cam Pro Plus lift Report Intake @.006* dur 286.48° @.050" 225.30° In/cl 104.36° @.050" .304" lobe lift Max lobe area 23.96 1.65:1 rocker ratio Exhaust @.006" dur 286.04° @.050" 226.68° exh/cl 110.54° @.050" .305" lobe lift Max lobe area 24.19 108 LSA 1.65:1 rocker ratio
@@brentonk461ismylostaccount Very innovative Mate.🇦🇺👍😎👍🇦🇺 Could you please tell me more about the choice of Ford Y-Block crank as opposed to a 355 stroker crank?
@ew4445 In around 1998-2000 you could buy a Harrop 355 crank but they're cast iron and was about $1500 at the time. (At the time the Harrop was Worth double what the car was worth). A cheaper alternative was the pro-comp crank but after looking at it, never put it in that Engine as I changed my mind and bought an 8-71 blower for it The c.o.m.e racing cranks were three and half grand or more at the time and out of my budget. The alternative was too choose the ford y-block crank as it is forged steel and is fully counterweighted. a suitable 292 y-block became available and As I am an engineering Toolmaker I had the skill too make it fit. I then got the rotating assembly balanced. By building the 340 stroker, I was able too achieve a zero deck height without milling the block. First combo had dish tops forged pistons, and about 7.5:1 compression then later flat tops, and 11.1 compression . Probably wouldn't do it again. Was Probably the smoothest running V8 I've ever had though. Since then I I've done a couple of other Holden v8 355 strokers with off the shelf 3.48" stroke cranks. One with Holden Rods, the other two have chev Rods. All have close too zero deck height without milling the blocks. Also done a few small block Chevs as well. They're whole another story. 😁
Great video, im building a 350 sbc in a T Bucket, maybe this could be a perfect cam grind for it. Would love to know the specs, also do you have any specs on that motor your willing to share. Watching from 'Down Under' OZ 🇦🇺 Keep up the gr8 work 👍😎
I have an 81 Malibu with a sbc 350 I just got it. But I want more power ! I need to connect with you I’m in Tacoma WA! would you be selling this motor ?? Anyway I would like to connect with you. Have a good day. That setup sounds amazing btw.
Don't get me wrong I love the sound but it sounds totally different if you put a manual flywheel and a clutch kit on it to give it the load like you would have in a car.. changes the sound and rev alot
Like your set sounds nice love getting 30 30 camshaft grind hyd roller retrofit sbc if can get grind hydraulic roller camshaft my favorite is 67 327 Carmaro ss
I have a ls5 454, and a 74 l82, i would love the specs to that cam, i always herd that the comp cam 280h was basically a dontov rip off, butt i have corvettes so i would love, those specs, i go to delta for alot of my cams
Those cams are nothing alike. Isky 280 beats out the Comp easily used both. Isky 270 mega will totally outperform your L82 cam by about 30ish+_ GOod brakes doesnt need a high stall (2500) sounds great...makes real nice torque! Had a 73 L82 Vette
@@rightsidelanechoice7702 Machinistst are weird. They downtalk everyone elses parts choices, work except their own Bet the GM guy has forgot more than a lot of machinists ever will know. Because of the reverse split most immediately come to conclusions Id love to see it used. Compare to the GM L82 cam close in specs.
