Small Block & Big Block Chevy Specific Mouse & Rat Motor Discussion & Conversions

Head+Cam Pkg:

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Old Jan 3, 2005 | 12:38 PM
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what's a good H/C pkg. for a sm block .30 over 350. I'm really considering the Dart 23-degree alum. heads, or even trick-flow but what's the popular cam to put with it? I'm looking for something at least w/550 lift. What yall think? May add the laughing gas as well. Not sure at this point, just weighing all options.
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Old Jan 3, 2005 | 02:09 PM
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my sister has some dart pro 1s on her 69 camaro. They preform pretty good and are alum. As for cams what all are you planning on doing with the car and I can give you a better idea as to what to go with.
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Old Jan 3, 2005 | 07:39 PM
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get a comp extreme energy solid roller.if you get a cam with.550 lift or more on a 355 be prepared to twist it to 6500 + to get max power.
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Old Jan 3, 2005 | 09:29 PM
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Originally Posted by D Rock
my sister has some dart pro 1s on her 69 camaro. They preform pretty good and are alum. As for cams what all are you planning on doing with the car and I can give you a better idea as to what to go with.
heads+cam for sure! not sure after that kinda leaning toward juice for a power adder. So for the sake of argument let's say heads+cam+laughing gas(nitrous) it's got a single plain intake w/4bbl 750 Holley. looking for around 550-600 horse. it's a 360-375 horse motor right now.
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Old Jan 3, 2005 | 09:33 PM
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Originally Posted by slow trap
get a comp extreme energy solid roller.if you get a cam with.550 lift or more on a 355 be prepared to twist it to 6500 + to get max power.
thx for the input

why not a hydralic? just wonderin.
new to this cam stuff
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Old Jan 3, 2005 | 09:43 PM
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the solid roller is USUALLY good for 10-15 hp over a hydraulic set up.down side is its around $275 for cam and roller lifters are close to that also.whatever route you go make sure the springs on the heads you order are big enough.most come set up for either hydraulic or roller cams.
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Old Jan 3, 2005 | 09:59 PM
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I hope your talking about 550-600 horse on nitrous because that is gonna be really hard on a 355 unless you use a solid roller and some 18 degree heads.

I meant as far as how the car will be driven, street. A track car that sees little street time?? Let me know and I can give you some suggestions.

I think you will like the car more if you pick the cam based on how you want to drive it and not horsepower you want to make.

Max power usually = high lift and loads of duration. Your car will be much better on the street if you go with a cam that is smaller, and you will want a spilt duration cam becuase you want to spray it.
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Old Jan 4, 2005 | 12:47 PM
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Originally Posted by D Rock
I hope your talking about 550-600 horse on nitrous because that is gonna be really hard on a 355 unless you use a solid roller and some 18 degree heads.

I meant as far as how the car will be driven, street. A track car that sees little street time?? Let me know and I can give you some suggestions.

I think you will like the car more if you pick the cam based on how you want to drive it and not horsepower you want to make.

Max power usually = high lift and loads of duration. Your car will be much better on the street if you go with a cam that is smaller, and you will want a spilt duration cam becuase you want to spray it.

Actually it'll be a street car that sees little or no track time. More than likely it'll be heads+cam+spray, possibly changing crank and stroking to a 383. What do ya think? Serious suggestions please.
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Old Jan 4, 2005 | 12:51 PM
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Originally Posted by slow trap
the solid roller is USUALLY good for 10-15 hp over a hydraulic set up.down side is its around $275 for cam and roller lifters are close to that also.whatever route you go make sure the springs on the heads you order are big enough.most come set up for either hydraulic or roller cams.
oh, ok, thanks didn't know that about solid and hydr., but I do know about the spring thing.
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Old Jan 4, 2005 | 02:47 PM
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Well for a 355 I would suggest a cam with 228 or so intake duration and 232 or so exhaust duration.

If you plan on stepping up to a 383 which will help performance alot I would suggest a came with 234 or so intake and 238-240 exhuast duration. This duration is measured at .050 lift.

Both of these cams would work good on the street and better on the spray, however you can go bigger if you want to sacrifce some of your low end for higher horsepower numbers and less driveablility.

My sis has a 383 in her 69 camaro with a cam that has something like 240/244 at .050 and alot of lift but it sucks the gas down and though it is a street car she should have gone a little smaller to give it better driveablitly.

I hope I helped you and if you need any more advice just ask, I am a expert by no means but I know enough to help a brother out.
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Old Jan 4, 2005 | 07:44 PM
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my friend has a 383 ci street/strip with the biggest comp extreme energy cam=.57?/.58?,can't remember but shifts around 6800 and we drive for extended times on the street,no probs.i have a 406 ci with a 255* @.050 straight across .575 lift and easy to drive also,and still plenty enough vaccum.my cam i'm installing may be a different story=259*i 268* e @.050 with around .640 lift after lash is included.if you go the 383 route those 215 pro 1s with 3500-3800 stall and cam 245-255 will still have decent torque and 500 n/a hp.
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Old Jan 4, 2005 | 07:54 PM
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couple of suggestions:

my combo is street driven a bit, still gets 13 mpg at 3500 rpm/70 mph highway speed, and times are listed in sig. 3500 lb car with the following: Canfield 195cc 67 chamber aluminum cylinder heads (no proting or polishing), Holley HP 750 dp carb, Edelbrock Victor JR intake, 1-3/4 headers with 3" full exhaust with tailpipes. TH350 trans, 3400 stall 10" JW convertor and 3.73 geared 12 bolt.
Cam choice: mine is a Crane solid grind (smallest Saturday night special made) .518/.536 lift, 230/238 suration @ 050. Worked great in my 355 (shifting at 6700 rpm, but kept it for my 383 combo b/c still mild enough to be more streetable than the next cam choice higher in their line-up (about 10-15 hp more). I make 372 rwhp, so about 475-490 flywheel ponies.
A solid roller, by the time you figure in springs, lifters and cam, you're looking at close to $1000. Worth it? In most cases yes! Is it more streetable? Again, in most cases yes.

Hope this helps!

Derek
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Old Jan 5, 2005 | 01:45 AM
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Not to hijack the thread but have you done anything to your suspension villan to achieve those times in your sigs
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Old Jan 5, 2005 | 06:53 AM
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Originally Posted by james562
Not to hijack the thread but have you done anything to your suspension villan to achieve those times in your sigs
Yep, suspension, while stock in design, has a few parts that have been changed a few times to find a good combo.

Rear suspension consists of:
Landrum mono-leaf springs
Comp Engineering 3-way adjustable shocks
Comp Engineering Traction bars
Front suspension consists of:
Moroso trick springs
Comp Engineering 3-way adjustable shocks
Energy Suspension poly bushings

That's it! Air the et streets to 14 psi, launch at 1800-2000 and see a small amount of air under the tires every launch

Derek
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Old Jan 5, 2005 | 07:00 PM
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thanks for all the suggestions and info on this pkg. I think i'll start with the heads and cam 1st and go from there.
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Old Jan 5, 2005 | 07:20 PM
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Originally Posted by D Rock
I hope I helped you and if you need any more advice just ask, I am a expert by no means but I know enough to help a brother out.

yeah, definantly helped in many ways, appreciate it. i'll keep u in mind as I get into to this project, especially if I go stroker route. prolly won't be until spring/summer though. gonna buy H/C over winter though. again thnx for the sugestions
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Old Jan 5, 2005 | 07:56 PM
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No problem man.
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Old Jan 5, 2005 | 10:24 PM
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I have A set of trickflow 23 195cc with 64cc chambers with 7/16 screw in studs and harland sharp 1.5 roller rockers these heads only saw 4-5 hours at the most on my chevelle before I went with a big Block,, I have a bunch more high performance SBC parts PM me if interested I'll probably let the heads go complete ready to bolt on with roller rockers, pushrods, ARP valve cover studs for $900.
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Old Jan 6, 2005 | 12:37 AM
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We had a 406 11.0 to 1 comp, .575 lift 258 dur., Trick Flow twisted wedge heads, '81 'Bu, 4.56 gear, T-350 trans, got 11 mpg, drove 40 mins to the track and ran 11.70s all day. Never got to spray it, the junk Erson cam broke and totaled the motor.

My current toy is a full on roller 421, blah, blah, I drive it in a '94 S-10, it runs 10.70s and I still have bugs.

Drivability depends on what you are willing to live with. I've done some really good sounding very daily drivable cars for customers that run good and are well mannered as well. But I'll say this, once you approach the 400 horse mark, things definitely start changing.
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