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Author Topic:   350
Whitelightning
Member
posted September 21, 2002 06:13 AM
Ok I have a basically stock 350 gm crate engine with a isky
Part#: 201LR4
Grind No./Type: LR-4 HYDRAULIC .420" lift rule class; high banked 1/2 mile tracks. RPM-Range: 3000-7200 Valve Lift - INT: .420 EXT: .420 Valve Lash Hot - INT: .000 EXT: .000 ADV Duration - INT: 296 EXT: 296 .050 Duration - INT: 248 EXT: 248 Lobe Center: 105
stock cast intake and quadrajet that I run on 1/2 mile dirt track. I be running around the track in second gear(turbo 350 trans and 3.42 rear gear) and tach 4000 just easing around but can run it flat on the floor and never see 5000 down straits. Is this wrong cam or any other suggestions. I have also ran a crane 427/427 lift energizer cam it its rpm range just was not good for circle track may be I should put the stock cam back in. Any help Engine runs good and strong and turns up good other wise just not on the track lol


Geffy95x
Member
posted September 21, 2002 09:40 AM
Time to put some more gear in the car ,Im not sure but maybe alot ,find out what the veterans are running at your track and go from there.


Whitelightning
Member
posted September 21, 2002 10:26 AM
well I run 3.42 with turbo 350 in secomd and that seems to be what most run at the track but like I say I can run around at half trottle and turn 4000 but then when I run full trottle it wont see 5000 I think something just aint right engine or carb or something.


Geffy95x
Member
posted September 21, 2002 11:34 AM
What kind of spark setup do you have?


Whitelightning
Member
posted September 21, 2002 11:45 AM
spark set up are you refering to ignition if so its all stock


ray14
Member
posted September 21, 2002 12:12 PM
it sounds like to me u just dont have enough gear what tire size are u running that has alot to do with ur gear ratio.if u runing big tires put a lower gear in it or run small tires,try one of the 2 and see what happens


SLEEPY GOMEZ
Member
posted September 21, 2002 12:59 PM
The stock HEI ignition begins to fail around 5 k. Get a module from Performance Distributors and see if that helps. You will need it anyway when you turn more R's. Be sure your are running 36 degrees advance when the engine is above 3500. Never depend on timing by stock specs (10 deg at 1200rpm etc.). Mark your balancer at 36 Deg. They sell timing tapes to put on your balancer for this purpose. They are not perfect but if you don't have a better choice available this will get close. SLEEPY


Whitelightning
Member
posted September 21, 2002 03:27 PM
ok I have used the caculator in the tool box to measure 36 degree on 8 inch balancer came to something like 2.5132 inches from 0 and marked it and that where i set it that should be close right. It idles high about 1000 to keep it running or else it shuts off in gear and at idle timing is above the timing tab does that sound about right


SLEEPY GOMEZ
Member
posted September 21, 2002 07:11 PM
Whitelightening, you are getting close. Check the timing with the engine revved to about 3500. If the timing is correct here it will be correct all the way up. At a lower rpm the timing wont make much difference. Many times this is referred to as power timing. SLEEPY


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