Tech / General EngineIs your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
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i have the 350 gm performance replacement block in my camaro these are the specs of the motor... Block Part Number:
10066034
Block Type:
Cast iron with 4-bolt main caps
Bore x stroke (in):
4.00 x 3.48
Camshaft duration (@.050 in):
222 degree intake / 222 degree exhaust
Camshaft lift (in):
.450 intake / .460 exhaust
Camshaft Part Number:
3896962
Camshaft type:
Hydraulic flat tappet
Compression ratio:
8.5:1
Connecting Rod Part Number:
10108688
Connecting rods Type:
Powdered metal steel
Crankshaft Part Number:
93426651
Crankshaft Type:
Nodular iron
Cylinder head Part Number:
93438648
Cylinder head Type:
Iron; 76 cc chambers
Displacement (cu in):
350
Engine Name:
350/290 HP:
Engine type:
Chevy small-block V-8
Ignition timing:
34 degree total BTDC
Maximum rpm:
5100
Piston Part Number:
12514101
Pistons Type:
Cast aluminum
Recommended fuel:
87 octane
Rocker arm ratio:
1.5:1
Rocker arms Part Number:
10089648
Rocker arms Type:
Stamped steel
Valve size (in):
1.94 intake / 1.50 exhaust
i was thinking new cam and heads and carb and intake...but whats the best choices...its mostly a street car but will see track time...just not sure on what size cam, heads, etc etc to go and what brand/type to buy...i would love to be pushing more then 400hp...so if someone could give me the names/part numbers of what i need to get that kind of power out of the motor...
* Always maximize power within the rpm band where the engine spends its most time
* Vehicle application is far more important than most enthusiasts would believe
* Bigger is rarely better. "Small" intake ports, manifolds and exhaust systems maximize torque which improves that wonderful "seat-of-the-pants" feeling in street engines
* Port velocity will improve cylinder filling more efficiently, especially at and below peak torque, than big flow numbers generated by large, slow moving ports
* A strong cylinder head will always make more power even if poorly matched with the cam. A weak cylinder head matched with an optimized cam will never perform as well.
* Transmission & rear end rear ratios have a significant impact on engine component decisions. A good example of this is camshaft selection charts that emphasize cruising rpm - basing, in part, a cam profile on gear ratios.
To put it bluntly, you've got a bit of studying ahead of you. Try searching this forum for things like "basics", "what mods should I do first", etc.
Carb and intake won't give you much HP/$ right now.
The heads DESPERATELY need to be replaced. Jump up the CR and get better flow. That cam can go next, but it's ok for now, until the heads go.
yeah i kinda alrdy figured that im ganna need better heads and cam before intake and carb...was tryin to figure out what head and cam to go for my application...so many to choose from...
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oh yeah...thx for info...im not 100% newbie here but im no expert either...
Last edited by Outlaw28; 03-30-2007 at 05:51 PM.
Reason: Automerged Doublepost
ok, well with a 5 speed you can go a bit more aggressive. What are the rear gears? 3.53 sounds oddball?
Vortec heads and intake would work ok.
Any aftermarket head in the 180cc intake port range would work nice. Probably 64cc heads, that'd put you nicely into the 9ish:1 range of compression. Iron or AL would work ok.
222/222 is an alright cam, it just has kinda lazy ramps on the cam, not much lift. I'm not sure how much difference it would make to go to a split pattern cam with more lift, like a Compxe268h or something. Like i'm not sure if it would be worth the $200.
i know the 3.53 sounds odd ball thats what the guy i bought it from told me it he put in it...im guessing he mistaked what he said and put 3.73 sometime this summer im ganna tear the rear in down and find out for myself...
You don't have to tear the rear apart to figure out what gear it has. Just mark the tires with the car on jacks or a lift and count how many revs of the driveshaft it takes to make one complete revolution of the tires.
