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#1
07-30-2016, 03:03 PM
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Comp 290B-6 vs 300B-6 vs Crower 60353?
For a 11.5 : 1 CR 469" in a 3100# - 3200# car with 265/210 cfm ported D ports, Tomahawk intake, 850 DP, 1 3/4" headers, Turbo-400 with brake, 9" rear with 3.73's.
I'm not concerned with street manners or running pump gas. I have not bought a converter yet, so I can match that. The car will probably see a 150 shot at some point as well. I have a NX plate system that I will probably use, but don't want to get crazy with the cast crank.
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'67 GTO 400 HO - Ram Air - 4 speed - 3.55 Safe T Track, A/C, PS, red fender liners '78 Lemans - Drag car project |
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#2
07-30-2016, 06:05 PM
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I'd consider an Ultradyne version.
The intake lobe on the Comp 290B-6 has 160 dur @ .200 Intake F4 292 259 @ .050 170 @ .200 0.3677 lobe lift Exhaust F13 300 267 @ .050 176 @ .200 0.3823 lobe lift 110 LSA Or maybe contact Mike Jones. http://jonescams.com/ I think the car might respond well to a Victor or Northwind intake. |
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#3
07-30-2016, 08:44 PM
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Quote:
The Ultradyne grind would have to be bought from Bullet, correct?
__________________
'67 GTO 400 HO - Ram Air - 4 speed - 3.55 Safe T Track, A/C, PS, red fender liners '78 Lemans - Drag car project |
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#4
07-30-2016, 09:43 PM
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Yes, Bullet Cams has the Ultradyne masters.
Lunati also did have a set of UD masters, but they don't list lobes in their catalogue anymore. Not sure if that matters. The lobes listed above at Lunati were: UF4 292 259 170 .368 UF13 300 267 176 .382 ----------------------------------- Comp has the GRI lobes. They recommend to nitride the cam with these lobes and use small chamfer oiling lifters. GRI intake lobe 16210 285 258 @ .050 170 @ .200 .379 lobe lift XTX exhaust lobe 6414 300 266 @ .050 173 @ .200 .367 lobe lift |
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#5
07-31-2016, 07:57 AM
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See 12.2 ET signature for the smallest large cam you could run. No ping on 87 Octane, 1/4 mile on 89 Octane. 9.0 :1 low compression. Probably real crisp on 11.5:1.
12.0&11.0 ET signatures shows the cam i'd recommend per your Post #1 for Street-Strip performance and manners.
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12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct |
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#6
07-31-2016, 08:33 AM
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Very similar to my combination. I am 200 lbs heavier and have been 10.67. I am using a Victor and dominator which picked up quite a bit over a torker II in my case.
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#7
07-31-2016, 01:20 PM
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Quote:
My goal is to get the parts I have into the 6's on motor. After hearing you guys talk, I think I'll go ahead and get a Victor. I'll have to do something about a hood on this car sooner than later, but I'll just have to make it happen. I'm planning in building a better engine next year, but I'm going to start out with the stuff j have laying around for now. We have stripped the car, installed a cell, battery relocation, and the cage is on the way. I'm weld mounts to my 9" and I have all the other stuff listed. The car cane with headers and already Pontiac powered luckily, so I'm good there.
__________________
'67 GTO 400 HO - Ram Air - 4 speed - 3.55 Safe T Track, A/C, PS, red fender liners '78 Lemans - Drag car project |
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#8
07-31-2016, 01:36 PM
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I run the 300B-6 in my 468. It works good for my combo.
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1969 Firebird, Tx3-455/468 machined by CVMS E-heads by Dave Wilcox/Comp Cams 300B-6 flat solid 850DP on E-85 by Eric Niefert/T2 1" plastic spacer T-400/PTC 4000/390's/30x9 Hoosier radial slicks,#3400 1.38 60' 6.32 @ 108 MPH at Northeast Dragway NC 5/23/15 (9th pass on new engine) https://m.youtube.com/watch?v=ePCu2v...ature=youtu.be 1.37 60' 6.26 @ 109 half track, 9.86 @ 136 1/4 mile, #3350 11/26/16 at Richmond Dragway (125th pass on new engine) |
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#9
07-31-2016, 11:20 PM
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Quote:
__________________
'67 GTO 400 HO - Ram Air - 4 speed - 3.55 Safe T Track, A/C, PS, red fender liners '78 Lemans - Drag car project |
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#10
08-01-2016, 12:06 AM
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My combination is pretty simple. The car is an 82 Buick Regal Estate Wagon, UMI rear suspension parts, afco shocks, and an anti roll bar. All this is hooked to a 9" rear with 3.70 gears and a 28x9 tire. The front end has loose steel bushings and strange single adjustable shocks with v6 springs that have been slightly trimmed.
I am also running a pretty basic TH400 with a 10" converter from PTC that flashes to 4500. The motor is a 400 stroked to 461, eagle rods and cast crank. It has the older design ross flat top pistons that are below deck about .015 with the compression in the 11.5 range. This short block was never really intended to be a race motor but I re purposed it. The heads are CVMS done 62's that are probably in the 250 range(Never flowed but I trust what Jim tells me). The 290b has been installed by the cam card as also recommended by Jim. He said to put it there and not retard it any due to the rear end gear. I am running 1.5 harland sharp rockers as Jim said more lift was not really needed with my heads. I have 1 3/4 headers with a 3.5" x pipe and mufflers dumped at the rear axle. I originally was running an 850 with a torker 2 and went 11.06 at 119 I believe on 110 race fuel. I swapped to a cleaned up victor with a 1050 dominator on E85 and instantly went 10.67 at 123. I was pretty pleased with that. |
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#11
07-31-2016, 11:08 PM
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The lunati cams have some of the old ultradyne type grinds. I just took out a nice older ultradyne 263/271 .556 lift solid cam.
__________________
Illinois Outlaw Gassers 6.27@107 9.97@131 |
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#12
07-31-2016, 11:17 PM
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Quote:
__________________
'67 GTO 400 HO - Ram Air - 4 speed - 3.55 Safe T Track, A/C, PS, red fender liners '78 Lemans - Drag car project |
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#13
08-01-2016, 06:54 AM
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I have had the 290b go 10.80 in .030" over 455 with ported 260 cfm iron heads, 1.65 rockers, reworked T2 , 850 Carb , 12 to 1 comp , 4.11 gears in a early bird at near 3500 with driver.
The thing makes so much torque even with 11 to 1 in that size motor that even on the street with 3.55 gears I would find no drivability issues!
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#14
08-01-2016, 11:08 AM
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I had this big Schneider Cam custom ground for a very similar application/intention.
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 Johnny US Army Retired1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1980 Formula 350 Pontiac back burner project 1972 LeMans 350 Pontiac |
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#15
08-01-2016, 08:43 PM
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I ran the 290B6 for a couple years. I got a 10.92 @ 120 out of it with my SD Performance 325 E-heads @ 3550 lbs. If you're doing a budget build, it and the lifters are sitting on a shelf collecting dust...
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'68 Firebird 463/pump gas/SD 325 E-heads/266-272 SR cam/1050 Dominator/3.73/ET Street Radials/1.37 60'/6.30@108.80/9.93@135.14 Hot Rod Drag Week finishing averages: 2014 - 11.12 @ 118.56 2015 - 10.84 @ 124.97 2016 - 10.56 @ 127.88 2017 - 10.29 @ 130.74 2018 - 10.29 @ 130.53 2019 - 10.16 @ 132.34 2021 - 10.09 @ 132.69 2022 - 10.13 @ 133.07 9.93 run - https://youtu.be/hII0_UlYM4U 
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#16
08-02-2016, 08:49 PM
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What RPM were you guys shifting iron head 4.21/4.25 stroke engines with these cams?
__________________
'67 GTO 400 HO - Ram Air - 4 speed - 3.55 Safe T Track, A/C, PS, red fender liners '78 Lemans - Drag car project |
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#17
08-02-2016, 10:22 PM
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5900 here
Sent from my iPhone using Tapatalk |
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#18
08-03-2016, 06:45 AM
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6200
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#19
08-03-2016, 08:09 AM
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6000 1/2 & 2/3 when I shift manually. When I run it in drive it shifts at 5600 1/2 & 2/3. It runs the same ET either way I shift it too. With iron heads, I was running a 262/268 Crower grind, shifting at 5500 1/2 & 2/3 manually.
__________________
1969 Firebird, Tx3-455/468 machined by CVMS E-heads by Dave Wilcox/Comp Cams 300B-6 flat solid 850DP on E-85 by Eric Niefert/T2 1" plastic spacer T-400/PTC 4000/390's/30x9 Hoosier radial slicks,#3400 1.38 60' 6.32 @ 108 MPH at Northeast Dragway NC 5/23/15 (9th pass on new engine) https://m.youtube.com/watch?v=ePCu2v...ature=youtu.be 1.37 60' 6.26 @ 109 half track, 9.86 @ 136 1/4 mile, #3350 11/26/16 at Richmond Dragway (125th pass on new engine) |
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#20
08-03-2016, 12:27 PM
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I don't have my written down results in front of me, but I degreed back to back a HC-03 and a 290B-6 camshaft about 6 years ago and the seat to seat durations were near identical ... could be they were spec`ed out at different lifts for seat to seat advertised duration... of course LDA, ICL, and lift were different as expected..
Not so sure I would trust published data on the B-6 is all.. .
__________________
If your not at the table you're on the menu A man who falls for everything stands for nothing. |
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