the engine formula
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Postmaster
Joined: Apr 2003
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From: Harrisburg, NE
the engine formula
-rebuilt 87-92 5.0 HO short block for the high nickel block and forged pistons
-e303 cam
-gt40p heads off an explorer
-performer rpm intake-till I get an efi conversion done-then i will use explorer intake
-autolite 4100 carb-the larger 600cfm off a big block
-10.00:1 compression ratio
-1.7:1 roller rockers- if the budget allows
-good old long tube headers
dyno 2000 says that this combo is good for about 385hp and 375 foot pounds of torque- is this fairly accurate? if so, sounds like chevy-stomping fun!!!
-e303 cam
-gt40p heads off an explorer
-performer rpm intake-till I get an efi conversion done-then i will use explorer intake
-autolite 4100 carb-the larger 600cfm off a big block
-10.00:1 compression ratio
-1.7:1 roller rockers- if the budget allows
-good old long tube headers
dyno 2000 says that this combo is good for about 385hp and 375 foot pounds of torque- is this fairly accurate? if so, sounds like chevy-stomping fun!!!
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Probably close enough, do you plan on using a 302 you currently have as many people on here are gonna tell you to use the 351. That combo is similar to a build up in a magazine exept they used a 351 and the heads had larger valves than came on the gt-40p's stock they didn't say that in the article but that is what they meant by upgraded package and the reason they paid $600 for the gt-40p heads. If you have time look around the p heads would be great if you want cheap new heads but you could probably find some used aluminum or a better iron head for a decent comparative price. Another bit of advice get a cam that a manufactuer recommends for your application more likely than not the off the shelf cam they recommend would still be better than the e-cam especially if you intend to put this in a truck. If noone has mentioned this before to you then I will, think torque when you go to build a motor for your truck that is what is gonna move it. Sounds like you have a fairly good plan good luck with the project
Last edited by jwtaylor; Sep 26, 2003 at 08:18 PM.
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Postmaster
Joined: Apr 2003
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From: Harrisburg, NE
think light guys, like a bit closer to an early ranchero. But-if it was for a truck I would most likely go with the explorers high torque roller.
Last edited by muscletruck7379; Sep 28, 2003 at 12:37 AM.
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This is going into a ranchero, they are fairly heavy are they not? I don't think you are gonna mess anything up but if it were me and it was gonna be a street vehicle or street strip I would still stick to a lower rpm cam designed more for low to mid torque. Look into comp cam extreme energy or for that fact any of their cam lines. Give them a call I am sure they can make you happy with your vehicle choice. The e-303 was meant for a mustang will very different requirements. There is a difference between what a person thinks they need in a cam and what cam is right for them. You probably know all this good luck and have fun, keep us posted with whatever you go with, let us know how the build is going, Later
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Postmaster
Joined: Apr 2003
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From: Harrisburg, NE
actually early ranchero's are supposed to be light- as in under 3000, a fox body stang weighs in at about 3100, give or take a few.
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What year ranchero? Like I mentioned you would probably be fine but the cam wasn't designed for your car. That cam was designed many years ago and technology has made newer designs better. You may only increase hp a little going with a newer cam but if its across the board then you would feel the difference. With the price of the cam if you choose to go new is comparable with other manufacturers. Either way you go you will probably end up with a nice motor I am just trying to throw stuff out there to give you a different perspective on the cam selection. Later
Last edited by jwtaylor; Sep 28, 2003 at 08:10 PM.
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Don't use 1.7 ratio rockers, they are not a cost-effective upgrade, and they wear harder on the valve guides. Also, the E-cam is not very effectively matched to your cylinder heads. Even with better heads, you should call Competition Cams, or at least Crane Cams to get a much better bumpstick than the E-303. Don't start to build this engine until you have a cam and a Torque converter selected for your vehicle. The cam will need to be compatible with a certain compression ratio for peak effectiveness, and the vehicle will be a dog unless you have a Torque converter that will put the engine in its powerband. You need to decide what you want to do with the entire vehicle. If it's daily driven, then you need to keep your diffy ratio to no more than 3.73, and your T.C. stall speed less than 2,400 RPM with a very large and effective trans. cooler. I'd also recommend not going more than 220 on the advertised duration on the intake side with your cam selection unless you have very high rearend gears and lots of T.C. stall speed. TK
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Joined: Apr 2003
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From: Harrisburg, NE
ok, were talking early-1961 supposed to be 2300 stock but i figured mine to be about 2800-3000. 3.27 gears and a toploader 4 gear,duderoy, it is dyno 2000 that i downloaded and can send to you, email me if you do, or if you dont want to do that I can run a setup for you, and i think i will give crane or comp cams a call,although I kinda figured that since ford motersport made the heads and cam that they would live fairly well together but your right, e-series are kinda old nowdays, maybe someday well refer to the like we nw refer to rv cams!
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From: shepherd
muscletruck7379 can you run this combo for me please. 90 model 302 bored .060 coated speedpro hyper pistons rebuilt 93 model gt40 heads .010 under crank and 280 duration 474 exhaust lift mellings cam weiend intake 1406 600 cfm edelbrock carb 1 inch carb spacer