I am rebuilding a 350, Its getting bored out, it has 4 bolt mains. I am going to use 76 cc heads with 2.02 and 1.6 valves. These heads are going to get ported. For the intake I can use a Edelbrock Torquer or an Edelbrock SP2-P dual plane. The carb is a Edelbrock 650. And I am using Headers with straight pipes. What would be better flat top or dome pistons, and what cam would suit me best.

 

flat tops would be the better choice for pistons. as for a cam you'll get a lot of differant ideas on what is best. i have used a lunati #00010 in a similar 355. 230* duration @.050 and .480 lift. you'll need a converter and headers, if you use it.

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ICON Motorsports
1st & 3rd

 

the sp2p intake is really an aluminum version of the factory manifold. It might have even smaller ports. The torker is really optimized for a different rpm band. You should consider a performer. That should proivide the same hood clearance. If your not going to have an aftermarker converter you should keep intake duration between 210 and 218 degrees at 050. That will put peak hp at about 5200 on a 350 (216-218 with 110lsa).

After rereading your post, I get the impression you have to meet some type of class requirments for racing (especially when I saw open pipes). If that is the case, and we are talking some type of jeep 4 wheeler, you should shoot for about 11 to 1 compression (about a point less if you need to run pump gas) and get one of those dirtrack cams that require a max of .45 lift. Those cams have lots of duration with tight LSAs and with the torquer it will make a good little class pulling or mud bogging cam.

[This message has been edited by jcb999 (edited December 30, 2000).]

 

Digger,

Ed and JCB are correct. The cam selection should really be determined by how the vehicle will be used. If you want pulling torque or launch in a heavy vehicle, the profile would be different than for the same engine in a lightweight road racer, which would be different than a drag car.

I'm guessing that JCB has pretty much nailed the use, jsut by deciphering your login name. Mud pulls? Off-road rally? One of five or six tractor engines?

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Later,
Vader
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"No matter how hard you try you can't stop us now"
Adobe Acrobat Reader 4.0

 

"Digger" is also know as a dragster.

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Stephen's racing page

87 IROC-Z Pro ET Bracket Race Car
383 stroker (carbed) with double hump cast iron heads and pump gas
454 Big Block buildup now in progress for the 2001 racing season

Best results before the 383 blew up
Best ET on a time slip: 11.857 altitude corrected to 11.163
Best MPH on a time slip: 117.87 altitude corrected to 126.10
Altitude corrected rear wheel HP based on power to weight ratio: 476.5
Best 60 foot: 1.662

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley

 

Why are you using 76cc heads? You'll kill your compression ratio unless you're using flat-top pistons, or you're going to run forced induction like a blower or turbo.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

 

What exactly are your rules? This sounds like an econo dragster, or a "claimer" of some sort? More specifics would help zero in on the best choice.

I recall motors I have built for classes where the right rear tire had to be a 205-70/14, on a dirt track; ones where your required 4412 Holley could be claimed for $300; "cam lift rule" motors; all sorts of things. All of these needed totally different setups. Too bad you can't do like the sprint guys mostly do, which is "run what you brung" as long as it's gasoline.

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"So many Mustangs, so little time..."

 

No I am using this car for the street. I live in Canada and there are no emmision laws so I can use what ever I want. Im putting this motor in a 82 camaro z28 it has a 4 speed. Im using the 76cc heads because they are the only ones with big valves I had.
And about my nick name I got that playing hockey, always digging for the puck in the corners.