Need top end recommendations - Team Camaro Tech
Engine General Engine Discussion.

 
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post #1 of 8 (permalink) Old Jan 10th, 05, 01:44 PM Thread Starter
 
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Since the car is out of the body shop I need to move on to the engine. Here are the specs for the bottom end:
350 bored 30 over
4 bolt main with ARP bolts
TRW 9:8-1 forged pistons
stock rods balanced with ARP bolts
Camel hump heads with roller rockers
Cam is a comp cam I don't know the grind # but it is a 512 at 280/290 (Sorry for the abiguity, but I really don't know cams)
I need recommendations for intake and carb.
Also if anyone car run the desktop dyno on this I would appreciate it,
Thanks in advance

[ 01-10-2005, 04:07 PM: Message edited by: king67rsss ]
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post #2 of 8 (permalink) Old Jan 10th, 05, 03:03 PM
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Mark
 
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Location: Shrewsbury, MA, USA
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Can't find a cam with those specs some are close but none with these three specs. That's on the high end of duration for a street car cam.

Flat top pistons with 4 valve releifs?
What's the purpose of this car?
How about the Transmission type and rear axle ratio?
Are the Camel hump heads 2.02/1.64 64CC heads or 1.94/1.50 64CC heads?

Mark Canning
1969 Indy Pace Car
350/300HP RPO Z11

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post #3 of 8 (permalink) Old Jan 10th, 05, 04:16 PM
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Brandon
 
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I suppose it depends on what type of carb you like. Edletrash, Rochester or Holley. It would seem one of the better street manifolds would be the Edlebrock Performer RPM, not the air gap. Then depending on what heads you have (valve size) and cam lift. I'd say no larger then a 700 - 750 for the street. If your lift is near the .500 range then 750-770DP might be just fine.

Brandon J. licence 1NASTY67

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post #4 of 8 (permalink) Old Jan 10th, 05, 05:20 PM Thread Starter
 
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MarK C, I couldn't find the cam with those numbers either. Unfortunatley the builder was a very good friend who just passed away. Car is basically a weekend driver. Transmission is TH350 and the rear is a 3.55. The heads are 2.02 64cc and flat top with 4 valve relief. I don't have a stall for it yet so I will also need a recommendation for that. Thanks for the help guys
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post #5 of 8 (permalink) Old Jan 10th, 05, 05:35 PM
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Mark
 
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Is it a mechanical or a hydraulic or a roller type cam?

Mark Canning
1969 Indy Pace Car
350/300HP RPO Z11

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post #6 of 8 (permalink) Old Jan 10th, 05, 05:44 PM Thread Starter
 
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Its a mechanical flat tappet I think
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post #7 of 8 (permalink) Old Jan 10th, 05, 06:30 PM
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I used an XS282S profile which is a solid tappet design with durations of 282/290 (244/252 @ .050)lifts of .520/.540 and a 110 separation angle in DD2000 with a single plane manifold and a 750 CFM carb and large tube headers thru mufflers and came up with a peak HP of 345HP at 5000 RPM and peak torque of 402 ft-lbs at 4000 RPM. It's a very peaky torque and HP curve in that it starts at 126/330 (HP/ft-lbs) at 2000 RPM runs up to the peaks and comes right back down ending up at 222/166 (HP/ft-lbs) at 7000 RPM.

This is a 2800 to 5500 RPM engine, it's going to idle rough with very little idle vacuum. This cam is going to need a 3000 plus torque converter, and you could probably use a little more compression ratio. Dual plane takes both HP and Torque away. Carb size doesn't change anything more than a couple of HP from 600 CFM thru 800 CFM.

Mark Canning
1969 Indy Pace Car
350/300HP RPO Z11

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post #8 of 8 (permalink) Old Jan 10th, 05, 06:48 PM Thread Starter
 
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Thanks Mark. So something like the edelbrock Torker II would be a good manifold for this? I may end up changing the cam out to something with a little better idle. Any suggestions? Thanks again
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