hey guys, im building a pump gas 468 with brodix BB-2 heads. lunati crank, h beams, probe dome srs piston. my CR should be around 11.5 to 1. this will be a street strip motor, but will see limited street miles (not going too far from home, just take out once in a wile to melt the tires off and race a few imports lol) other than that i will be racing it. the motor is set up for a solid roller with about a .700 max lift. i am thinking of a cam with about 260@ .050 on the intake and 270@.050 on the exhaust and anywhere from a .650-.700 lift. and as of right now, this motor wont be sprayed. so im thinking of a lobe sep. of 108-110. 108 will be a bit more radical on the street, but the torque should come up fast and hard. 110 will be a bit more streetable, and probably run on pump gas a bit better.

anyone have any input (other than call comp cams lol) of where to go as far as lobe sep, or even any other input?

thanx

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78 malibu, mini tubbed, stock suspension, 12 to 1 468, th400, 4.56's, sunday cruiser

If you are looking for it to be right, then call Chris Straub. 423 391 7774

If you have an idea of what you want and close is ok, then you can use the catalogs. For my Chevelle, I called Chris. For the Nova, it was a fun street car, so down a few hp isn't going to hurt it.

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http://s30.photobucket.com/albums/c306/ ... C01620.jpg
http://s30.photobucket.com/albums/c306/ ... C01615.jpg

My old 78
http://s30.photobucket.com/albums/c306/ ... usquet.jpg

I RUN A 306 MAGNUM SOLID LIFT IN MY STREET CAR

Although I havent bought a cam from Chris Straub,he does have an excellent reputation.But I did buy a custom ground solid roller last rebuild from UDHarold Brookshire,and he delivered exactly what I asked for.After this experience,I will never buy an off the shelf grind again,for almost the same price you can speak to someone knoweledegble in the art of making camshafts,and get exactly what you want.
Guy

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'86 Monte SS,468 Big Block,Brodix RR Rectangular Port Heads,UDHarold Custom Grind Solid Roller,.668 Lift,243/249 dur @ .050,112 LSA,Weiand Stealth,Mighty Demon 800 DP,Hooker 2 inch Headers,Jesel Shaft Rockers,Manton Series 5 Pushrods,Doug Nash 4+1 5 Speed,Hurst Inline Shifter,Ford 9 Inch

yea i was also thinking of calling for a custom grind.

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78 malibu, mini tubbed, stock suspension, 12 to 1 468, th400, 4.56's, sunday cruiser

You have enough in that motor you can spring the few extra tens of dollars to get a custom grind. You're at a level where the right cam could be 40HP difference from one that's "pretty close". Plus when you're talking about a roller they can give you pretty much anything you want- just depends how bad you want to beat up the valve springs.

Go on. Give yourself permission to splurge on this one just a bit. I'm all about budget, but in this case the extra bucks aren't going to be much compared to the overall project cost and the power potential it could yield. Which means it IS a budget choice if you look at it from that perspective.

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78 Malibu- Grandmother's go-to-church car with 35K original miles. Out with the smogger 2bbl 305. In with a really mild 383 topped with a Weiand 142 "underhood" blower. Once again running good. I may never drive it again.

1990 454SS pickup. 461 with AFR heads, lumpy solid lifter cam and the usual go-fast trimmings. Dangerous, loud, horribly inefficient and lots of fun.

Oh, and I forgot to mention..... please report back what they recommend. I'd be interested to know how far the final specs are from what you were thinking about.

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78 Malibu- Grandmother's go-to-church car with 35K original miles. Out with the smogger 2bbl 305. In with a really mild 383 topped with a Weiand 142 "underhood" blower. Once again running good. I may never drive it again.

1990 454SS pickup. 461 with AFR heads, lumpy solid lifter cam and the usual go-fast trimmings. Dangerous, loud, horribly inefficient and lots of fun.

i was looking at all the off the shelf cams and im not happy with any of them, except for howards. they seem to have a good selection. plus my machine shop has had it with comp cams, not too happy with them. and lunati screwed me on one of their cranks so im not going with them. but other than that i was going to call up UD or billit. i just thought maybe one of you guys had a close combo to mine and would have a quick answer, but i guess theres never a quick answer with cams.

i also was thinking if i get a off the shelf cam, i would go slightly bigger than what i wanted, to bleed off some cylinder pressure, make it more pump gas friendly. the car has 4.56 gears and once i have the converter made for it, in the end, its all matched up right, should work out fine ether way.....

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78 malibu, mini tubbed, stock suspension, 12 to 1 468, th400, 4.56's, sunday cruiser

a howards i was looking at.....

269@.050 I
277@.050 E
.680\.680
108 lobe sep.

or, they make the same cam with a 110 lobe sep. o well. il have to make a few calls.

i will let you guys know thanx!

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78 malibu, mini tubbed, stock suspension, 12 to 1 468, th400, 4.56's, sunday cruiser

No matter which cam you choose,be sure to get a set of top quality valve springs that are matched to your cam specs.PAC,PSI & Isky are all top name manufacturers of springs.If you do call Chris Straub,he can advise on what parts to use.
Guy

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'86 Monte SS,468 Big Block,Brodix RR Rectangular Port Heads,UDHarold Custom Grind Solid Roller,.668 Lift,243/249 dur @ .050,112 LSA,Weiand Stealth,Mighty Demon 800 DP,Hooker 2 inch Headers,Jesel Shaft Rockers,Manton Series 5 Pushrods,Doug Nash 4+1 5 Speed,Hurst Inline Shifter,Ford 9 Inch

ok guys. i sent ultra dyne a cam recomendation form and...

CHB 309/316-R10
Duration @ .050 = 276/284
lift = .731/.731
lobe sep = 110

seems a bit big(just as i expected), but i think im going to go with it.

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78 malibu, mini tubbed, stock suspension, 12 to 1 468, th400, 4.56's, sunday cruiser

you ever get that cam in your motor? how'd it do? i also got mine from bullet, its a .690 / .720 havent had it to the track yet, but i went about 20 miles on the street with no problem, other than the garbage street manners of course. what kind of lifters are you using?

i have a set of crower lifters. probably going to run about a 4800-5100 stall in the car with a 4.56 gear. havent put it together yet though. whats the duration on yours?

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78 malibu, mini tubbed, stock suspension, 12 to 1 468, th400, 4.56's, sunday cruiser

mine is a bullet solid roller- gross lift .722/.697 and duration at .50 is 251/262. the lobe separation is 112 and bullet recommends .025 and .027 hot lash on the valves. also have bullets offset lifters and Trend's dbl taper pushrods. for all 16 i think they were under $150 shipped! Talk to Scott in the Tech department, that guy knows his stuff for sure.

nice. i went a little big on my pistons and ordered a 39.00 cc dome piston from probe. they claim it will be 11.5 to 1 with my heads but looking at the dome...its friggin huge! so i thing its going to tske a huge cam with a wide lobe sep. to get this thing to run on pump gas.....but we'll see!

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78 malibu, mini tubbed, stock suspension, 12 to 1 468, th400, 4.56's, sunday cruiser