400 sbc new solid roller cam suggestions [Archive] - Team Camaro Tech

: 400 sbc new solid roller cam suggestions


johnred68
Nov 27th, 06, 01:10 PM
I have a 400 SBC in a 68 camaro. The tranny is a 350 turbo with a 3000 stall. With 355 gears in the rear... The cam spec's I have now are quite large and are listed below. Can you guys suggest a solid roller cam that would be "ok" on the street? I am also looking at the 4/7 swap for this cam. I plan on just swapping the cam and springs and keep the lifters since they only have maybe 100miles on them....


SPEC CARD
PART #: 12-000-9
GRIND #: CS 319R-1/324R-4 R107
J. DIAM: STD INT EXH
VALVE ADJUSTMENT .026 .026
GROSS VALVE LIFT .601 .634
DURATION @ .020
TAPPET LIFT 320 324
VALVE TIMING OPEN CLOSE
@ .050 INT 33 67
EXH 70 36
SPECS FOR CAM INST. @ 107.0 CENTERLINE
INT EXH
DURATION @ .050 280.00 287.00
LOBE LIFT .401 .423
LOBE SEPARATION 107.0
ROCKER ARM RATIO 1.50 1.50

zdld17
Nov 27th, 06, 01:22 PM
Yes, this does appear a pikes peak cam, rather large. Hope you are running at least 1.550 id springs. I am running a Comp Xr 282HR with large springs. It is streetable enuff for me with a tremac, and 3.73 gear, but there are others.

DOUG G
Nov 27th, 06, 02:23 PM
Thats a size or two bigger than I'm going. Buddy ran it on the street and track... weekend toy,streetable yes, but thats debatable.

Greg O
Nov 27th, 06, 05:35 PM
Check the Comp Cams catalog...I am sure they have something in the Xtreme Energy line. Does it have to be solid? I like my HR294 hydraulic pretty good...

Dougs72Nova
Nov 27th, 06, 07:56 PM
That camshaft has a ton of duration for a 3000 convertor and a 355 gear. I was thinking something in the 240 @ 0.050 or lower range with that gear and convertor. Would have to hear more about the compression ratio, cylinder heads and induction to make a good suggestion.

bills68camaro
Nov 27th, 06, 09:19 PM
hey johnred68. i just finished & fired my new 434 sbc about a month ago. it has a solid roller that specs out at 254/260 @ .050 & .582/.588 on the lift with 1.5 rockers. i'm running a 4000 converter with it & 4.10's out back. I LOVE IT!!! revs fast, pulls hard, & no complaints. i drive it everyday so far (weather permiting). if you are not planning on taking any long road trips in the car, i would not hesitate to run a solid roller on the street. comp told me to keep the lift under .600 & the valve springs will last much longer in a street application. look at the comp xtreme energy mech rollers. maybe the xr274r. all the comp 4/7 swap cams are too big for you converter/gears. maybe another brand?

Mark .L.W.
Nov 27th, 06, 09:56 PM
I put over five thousand miles this summer with a solid roller , make sure you use good lifters and a rev kit also helps them last . I run the Isky Redzones , they are also rebuildable .
Mark .

Dougs72Nova
Nov 27th, 06, 10:37 PM
The new comp cams endurex lifters have a hole drilled that directly feeds the roller. This makes the solid rollers much more apt for the street. I have ran solid rollers in all my street cars and have never had a problem. Doug

brightblue87iroc
Nov 27th, 06, 10:54 PM
For my part, once you get over 290-300 advertised on the duration a 3000 stall converter puts a 400 out of the torque band on launch, especially with 3.55s and if your head ports are over 200ccs. If the converter slips a lot it'll be real streetable, but at the drag strip with only 3000 stall, you're losing a lot of 60-foot time with 3.55s. When you get up around 300 degrees (250 @.050" nominal) you'll need a 3500-stall converter to make 3.55s work well. Bill--I love it! I'm screwing together a 406 with a Lunati 290/296 (adv.) --.591"/.598"--106 centerline solid roller with 1.5s and a 4200 stall and 4:11s in a '68. Can't wait to feel that sucker go sideways!

BigRed-L72
Nov 28th, 06, 06:15 AM
If starting from scratch there would`ve been no real need to use a solid roller in a driver 406.

Seeing you have the parts already though, you can do what the Camaro in my signature has, solid rollers on a hyd roller cam.
Light spring pressure, lighter weight lifters, especially horizontals. Lash them tight and you`re set.

Works just fine.

DOUG G
Nov 28th, 06, 02:57 PM
72840LUN lifters <--not 100% on how good they are.
XR292 R-10 Comp Cam
I have the heads getting worked with under cut valves and I forget the springs but they're green and good to .7XX lift.
We'll be having fun next season :D

johnred68
Nov 28th, 06, 03:19 PM
The heads that are on it are 292's.. The previous owner told me they were pro-ported. Comp. ratio is 11 to 1. The engine is in the car and "Runs" on the street now. But is a bit much for me. It can barely get out of its own way unless I hammer it. But when I do, watch out it take off like a bat out of hell..... With my power steering and power brakes it doesnt like to idle and stay running under 1100 rpm.... My old 350 I pulled had a mean Lopey Idle to it which I want to get back to but with alot more power.... With dd2000 it rates at 498hp.... but only 98lbs of torque at 2000rpm with my team g intake...

Dougs72Nova
Nov 28th, 06, 04:17 PM
John, with that much camshaft and a 3000 convertor and 3.55 gear i can imagine a pig trying to get out of the slippery mud until you get about 5500 rpm:( I will find you the camshaft i would use a little later tonight. Once i post it everyone can weigh in and see what they think. Doug

Dougs72Nova
Nov 28th, 06, 04:53 PM
With the drivetrain combo you have it doesn't leave alot of room to work with a solid roller. I would probly use this one if you are not going to change the gear in the car. Alot smaller than what you have now. The only thing i would do is to have comp cams grind it on a 108 lsa to bring the power curve alot tighter. Let me know what you think:thumbsup: The part number is

xr280r
the specs are
2500-6500
242i 248e @ 0.050 duration
570i 576e lift
110 lsa, but i think i would have that ground at 108lsa

Novaguy73
Nov 28th, 06, 05:18 PM
320/324 @ .020.....Holy huge-cam Batman!!!!

Novaguy73
Nov 28th, 06, 05:19 PM
With the drivetrain combo you have it doesn't leave alot of room to work with a solid roller. I would probly use this one if you are not going to change the gear in the car. Alot smaller than what you have now. The only thing i would do is to have comp cams grind it on a 108 lsa to bring the power curve alot tighter. Let me know what you think:thumbsup: The part number is

xr280r
the specs are
2500-6500
242i 248e @ 0.050 duration
570i 576e lift
110 lsa, but i think i would have that ground at 108lsa

I think 280 actual might be a bit low for a driver and 11:1 compression, moderate gears, and pump gas. It could maybe be done but thats really pushing it.

BigRed-L72
Nov 28th, 06, 05:38 PM
The cam in the sig is an UltraDyne 234/242 @.050 .530/.530 on a 108 sep.

The converter is a tight 2800-3200 9.5"
Shifting at a relatively low 5400-5600 rpm.

TH350 with 3.23 gears

Dougs72Nova
Nov 28th, 06, 05:39 PM
Quote "I think 280 actual might be a bit low for a driver and 11:1 compression, moderate gears, and pump gas" End quote

A true 11.1 compression and pump gas are pushing all by itself!

BigRed-L72
Nov 28th, 06, 06:10 PM
[QUOTE
A true 11.1 compression and pump gas are pushing all by itself![/QUOTE]

???

ericsz
Nov 28th, 06, 06:14 PM
Ran this cam for 2 years....

406
Doug Herbert
285/285 ADV Duration .244/.244@.050 .555/.555 lift 110 LSA. Great Torque and Low to Mid power. 4.11 gear. RPM Range 2500-6500, You'd love it.

Dougs72Nova
Nov 28th, 06, 06:33 PM
[QUOTE
A true 11.1 compression and pump gas are pushing all by itself!

???[/quote]

11.1 is right on the edge of needing atleast a good mix of race gas with pump gas to bump the octane rating. Depending on the camshaft the cylinder pressure is getting up there. Doug

Mark .L.W.
Nov 28th, 06, 08:23 PM
I run 11:4 on pump gas with alloy heads , if the quench is about 35 to 40 thou it should be fine . My roller is 254 262 on a 110 and it works great on the street .
Mark .

johnred68
Apr 24th, 07, 06:42 PM
I have selected a new cam, I went with the XR286 on a billet core with a 4/7 swap. I hope it works well with my stall/3.55 gear and the automatic or I might have to swap back in the 4sp.

wiskeesour
Apr 24th, 07, 06:47 PM
Tell us how you like the 4/7 swap on the street. I noticed the powerband dropped 300 rpm and 25 peak hp difference just in a cam swap in a 377 a few months back...wasnt a street car tho....

Eric68
Apr 26th, 07, 10:58 AM
Comp XR280R fits with everything except the compression ratio. (280/286 advertised, 242/248* @ .050, .570/.576" lift, 110* LSA). Ideally, closer to 10:1 compression would be better, but you may get away with it (especially if you mix gas with some good stuff)

ps. you definately do not need, nor will you benefit from a 4/7 swap.

johnred68
Apr 26th, 07, 03:27 PM
I know I dont need it or maybe wont benefit from it, But for the little extra cost it involved, I figured I might as well add it. That and My brother is a racer and talks a good talk about the 4/7 swap... I would ahve went with the smaller cam, But a head swap to lower the comp ratio is not in my budget right now....

Is your cam on a small base or a regular base circle?

Eric68
Apr 26th, 07, 04:52 PM
Small base circle. I hope you ordered the two piece core (billet cam with cast distributor gear)

johnred68
Apr 26th, 07, 05:01 PM
I did order it that way, They called me back and said they were back ordered for the 2 piece cam cores and it would be a 40 day wait. So I will have to use a bronze dist. gear, which I already have with the cam that is currently in the engine...

johnred68
Jun 11th, 07, 06:39 PM
The new cam is in!!!!... I am pretty happy with my cam choice. Although the 280 would be a little bit better for the most part. This cam is night and day from what I had before.

For the most part is was an easy swap. The cam went right in and started right up. The only real issue I found out after the fact is I have a big hole in my rad. now... Not exactly sure how that happened.

Now all I have to do is secure the trans lines, fix my neutral safety switch and get it inspected. After that I should be good to go!!! Thank you all your your help!

6D9
Jun 11th, 07, 11:34 PM
Whats the idle like on the XR286???

sheboygan34
Jun 13th, 07, 02:50 PM
I have the XR286R in my new 406 w/ AFR heads. My engine builder was trying to talk me into a large cam. This seems just right for me. I'll be picking up the engine next week. Can't wait to fire it up !!!

www.beattheheathowardsgrove.org

johnred68
Jun 13th, 07, 05:23 PM
The idle is nice, Lumpy enough for me without being too lumpy. It will idle good between 850 and 900 rpm in neutral. About the same in Drive. I am surprised that it handles my power steering so good seeing how it is a big cam. The breaks are a little mushy but I have a vac. canister going in shortly.

pdq67
Jun 13th, 07, 08:48 PM
Call here and ask THE MAN, UDHarold what you need, imho!!

"I work for Custom Camshaft Company, a division of Arrington Manufacturing.
I stay at my house in Senatobia, MS, and telecommute to work in Martinsville Va. My office phone is 662-301-1245, and so far I'm having to take my wife to work, she's a Staff Accountant in Memphis, so I'm not here before 9:00 AM CST or from 4:00 PM to 6:00 PM CST. I answer the phone when it rings, and have sold several cams to Team Chevelle members."

Harold owned Ultradyne Cams and he designed CC's great old 268HE and Lunati's VooDoo line so you will be in good hands!!

And please say hello from old pdq67!!

pdq67