Opinion on cam for the 400 build up

eric305TPI · 2004-03-04 05:27:18

:help::confused:As the title applies I am in some serious need of opinion on what cam to run in te engine. The cams I've been looking at are the Crane 119661 (http://www.cranecams.com/?show=browseParts&lvl=2&prt=5&Vehicle_Type=Auto&Cylinders=8&Engine_Make=CHEVROLET&Year=1980&Engine_Size=262-400%20C.I.&partNumber=119661&partType=camshaft) 119841 (http://www.cranecams.com/?show=browseParts&lvl=2&prt=5&Vehicle_Type=Auto&Cylinders=8&Engine_Make=CHEVROLET&Year=1980&Engine_Size=262-400%20C.I.&partNumber=119841&partType=camshaft) 119831 (http://www.cranecams.com/?show=browseParts&lvl=2&prt=5&Vehicle_Type=Auto&Cylinders=8&Engine_Make=CHEVROLET&Year=1980&Engine_Size=262-400%20C.I.&partNumber=119831&partType=camshaft) or comp cams 12-432-8 (http://www.compcams.com/Technical/Search/CamDetails.asp?PartNumber=12-432-8) 12-433-8 (http://www.compcams.com/Technical/Search/CamDetails.asp?PartNumber=12-433-8). The compression is going to be 10:1 with Dart 215 Pro 1 aluminum heads. Trans is a THM 350 with a 2500-3000 converter and 3.73:1 gears. Intake is going to be a HSR with 30# (sounds ok?) injectors and a 730 SD ECM with a self programmed chip. This is going to be a weekend car with a mix between street and strip use. Im looking for low to mid 12's (pending traction) in the car (approx 3700LBS). Thanks for any input that is usefull.:help::confused:

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Mar 3, 2004 | 11:27 PM

eric305TPI

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From: Houston / The Woodlands, TX

Car: 82 ElCamino, looking for a 3rd gen

Engine: 305 TPI(427SB in progress) 730 $8D

Transmission: THM350 (Getting a 4L80E soon)

Axle/Gears: 10 Bolt w/ 2.43 gears :(

Opinion on cam for the 400 build up

As the title applies I am in some serious need of opinion on what cam to run in te engine. The cams I've been looking at are the Crane 119661 (http://www.cranecams.com/?show=brows...tType=camshaft) 119841 (http://www.cranecams.com/?show=brows...tType=camshaft) 119831 (http://www.cranecams.com/?show=brows...tType=camshaft) or comp cams 12-432-8 (http://www.compcams.com/Technical/Se...umber=12-432-8) 12-433-8 (http://www.compcams.com/Technical/Se...umber=12-433-8). The compression is going to be 10:1 with Dart 215 Pro 1 aluminum heads. Trans is a THM 350 with a 2500-3000 converter and 3.73:1 gears. Intake is going to be a HSR with 30# (sounds ok?) injectors and a 730 SD ECM with a self programmed chip. This is going to be a weekend car with a mix between street and strip use. Im looking for low to mid 12's (pending traction) in the car (approx 3700LBS). Thanks for any input that is usefull.

Mar 4, 2004 | 06:07 AM

HiTech5

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From: ILL

Car: 1986 Pontiac TA

Engine: 383

Transmission: 700R4

Axle/Gears: 3.70

Take a look at the flow numbers on the Dart Pro 1 heads. If the intake /exhaust ratio is 75% or above, go with a single pattern grind.

Also, the cams you listed have 110 lsa. You will want to get a cam with a 112 lsa or idle vacuum may be a problem.

I'm running a Comp XE solid roller custom grind 242/242 .608/.608 112 lsa installed at 109 degs. This cam coupled with the Brodix heads seems to make some serious power.

www.geocities.com/dzperf