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Topic Review (Newest First)
03-29-2013 10:32 PM
Summit77 I should be able to take those numbers to a shop and they can get the cam and parts you listed thank you very much for your time and help its much appreciated.
03-29-2013 10:28 PM
vinniekq2 ya I heard Canada has 94 octane fuel at chevron,with zero methanol
03-29-2013 10:27 PM
vinniekq2 quick translation for cam specs
600 lift
hydraulic roller( use a solid roller if you rev higher)
108 intake center line
112 lobe separation angle
229 intake duration at .050
235 exhaust duration at .050
power band from 2-6000 RPM red line
compatible with 10:1 CR
03-29-2013 10:14 PM
Summit77 I have no idea what all those numbers mean sorry it's all new
03-29-2013 10:13 PM
Summit77 11s would be sweet it's a 71 gmc 1500 auto not sure of weight But I'd like 11s or better but I'd also like to be able to drive it around town.
03-29-2013 10:11 PM
vinniekq2 120325-12 NA 282 288 229 235 .589 .600 112 108 Hyd. Hyd. 1,2
2000-5800 Fair idle, Moderate Street/Mild Bracket. Good mid range. 10.0-11.5:1, 2500+ stall.
a cam like this
AFR,265 cc oval port heads ( or equal)
with previously mentioned parts= tire shredder
03-29-2013 10:04 PM
vinniekq2 If you buy aluminum oval port heads,mild hydraulic roller cam,victor junior oval port intake,850 Holley,Im sure that would work.
now 500 - 600 is a big range,pick a number or performance goal,IE:mid 11s in a 77 Camaro with auto weighing 3800 pounds with driver and we can nail a formula
03-29-2013 09:53 PM
Summit77 Ok I'd like 500 hp maybe 600. So I start with heads that can hold and produce that power. I want naturally aspirated. I want a 454 and it also need to be street able so idle to 5500 rpm would be ideal. Which my research says performer rpm cam and performer intake. I'd like 10:1 compression which here in Canada we can do so and run pump gas premium. Is this somewhat on a good track or am I far off?
03-29-2013 09:45 PM
vinniekq2 start with simple math
how much horse power do you want?
then choose the heads that will make that much power.
choose N.A. or compressed.
choose engine size and RPM range that best delivers your needs.
then choose CR/cam/fuel management
Make sure ignition is compatible
Tune exhaust to match system
03-29-2013 08:16 PM
Summit77 Well they say go 383 stroker so if I'm going threw the screw around with mix and matching different engine parts might as well go big block and get it over with. Diesels are easy a monkey could slam power in a diesel. Gas is tricky that's why I want to learn it. Just having trouble figuring out how to choose the right cam and heads and what cr to run. Turbo 454 would be nice but this is my first gas project and don't want to get to far out of my league and end up with something that sits half done for 15 years like most of the people I know.
03-29-2013 08:04 PM
vinniekq2 454 now?
the biggest difference between diesel and gas is the fuels.If you understand how to make power with diesel engines,then build a gas engine like a diesel and use propane
Turbo charged propane engines make decent power for reasonable costs.and cheaper than a diesel.

maybe you have a couple diesel turbos kicking around your shop?
03-29-2013 04:18 PM
thinwhiteduke
Quote:
Originally Posted by Summit77 View Post
Diesels are so much easier haha. Ok so compression and duration are important got that part now. So 454 with 10:1 compression is good?

....with a camshaft duration of 227 - 230 degrees at .050" lift. This is a basic guide. There is much written on the subject.
Here's a couple of links to articles that explain things a whole lot better than I can.

http://www.crankshaftcoalition.com/w..._compatibility

http://www.crankshaftcoalition.com/w..._relationships

http://www.crankshaftcoalition.com/w...ose_a_camshaft

Hope this helps.


Duke
03-29-2013 03:56 PM
Summit77 Diesels are so much easier haha. Ok so compression and duration are important got that part now. So 454 with 10:1 compression is good?
03-29-2013 03:36 PM
thinwhiteduke
Quote:
Originally Posted by Summit77 View Post
How do you match cr and cam what are thE general rules
These are the general rules. If you want to run it on the ragged edge ie maximum cr for minimum cam, you must pay close attention to things like quench, plug heat range, carb jetting, tuning generally...

Duke
03-29-2013 01:28 PM
gearheadslife
Quote:
Originally Posted by Summit77 View Post
Can I go with a 454 or will I have mounts to cut and move
to install a bbc you need the bbc frame stands and mounts..
year one has the stands,, brothers trucks has the poly mounts..
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