509 BBC 69 camaro, its all about the engine, baby! - Hot Rod Forum : Hotrodders Bulletin Board
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Old 10-25-2003, 08:37 PM
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509 BBC 69 camaro, its all about the engine, baby!

now i posted this thread in beginner's forum, but i got absolutly
nowhere. any info will REALLY, REALLY help. the engine is a 4 bolt
MK IV 509 BBC, what i would like to know is if these performance
parts are compatible on this specific engine. these are the parts
i want to put on this car: Holley rectangular port aluminum heads;
Lunati mechanical camshaft with a 308/316 duration and
.651"/.632" gross lift, and an Edelbrock dual quad intake manifold
for rectangular port big blocks and 2 Edelbrock performer carbs
with manual choke and 750 CFM airflow. all these parts are for the
MK IV big block chevy, but i don't know if they only work with only certain cubic inch MK IV, or if they work with any cubic inch MK IV.
this will be the first engine i've ever worked on and my first
experiance in the field of true hot rodding. i really need your help
on this one. thanks a real, REAL lot! i would really appreciate it .
i just put $2,000 down on this car and i take delivery on it soon.
i SERIOUSLY PROMISE to get pics for you guys when i get this car, trust me this car is definatly a true winner.

Quarter mile killer.

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Old 10-25-2003, 08:58 PM
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in my opinion the parts will work, even if its a tall block and you have a standard height intake, there are spacer's available to adapt a standard height block intake to a tall block...
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Old 10-25-2003, 09:10 PM
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advice appreciated 2wld4u, the car has a 10:1 compression and
supposedly makes 600 horsepower on pump gas. i just want up
the performance just a little bit. i would like to take it to the drag
strip and show it off.

Quarter mile killer.
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Old 10-25-2003, 09:16 PM
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That engine sounds good but you would make more power with a single carb. Dual carbs are just for looks.
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Old 10-25-2003, 09:25 PM
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Quote:
Originally posted by Quarter mile killer
advice appreciated 2wld4u, the car has a 10:1 compression and
supposedly makes 600 horsepower on pump gas. i just want up
the performance just a little bit. i would like to take it to the drag
strip and show it off.

Quarter mile killer.

Congrats, I hope she'll kick *** and take names
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Old 10-25-2003, 09:27 PM
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wow, thanks lluciano 77, i never knew that. thank you very much
you just saved me alot of money, wow, i am shocked... wow....
i always thought dual carbs would increase performance, but you
showed me the light and saved me money.

thank you lluciano 77,
Quarter mile killer.

trust me 2wld4u, she definatly will and when i get pics for the
photo album, tell me what you'll think of her.
Quarter mile killer.
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Old 10-25-2003, 09:41 PM
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in responce to the dual quad post

, youll need at least a 1050 dominator and a very good single plane like a Dart wilson..or a Brodix, in half way in between all out race and boarder line street strip, the RPM range is most important, if you want a car that pulls from 4000-7500 or a pro street 3000-7000, and if you dont have top notch bottom end componets like 4340 crank, rods, and a good set of pistons, Id keep the rev's @6000 or below..so its a shot in the dark, a 10:1 509 w/ alum heads doesnt tell you much..and a dual quad set up is fine at lower RPM, and dual quad set ups are used alot in the racing arena, but usualy with a sheet metal tunnal ram, so they are better..for what you want, Id seriously consider a few things before I decided on the cam, and intake, this will have to be matched up with a stall, tire size, rear gear, weight of car etc... so there is more to it than just picking parts..
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Old 10-25-2003, 09:51 PM
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the car currently has a holley 1050 on single plane, the weight of
it i am not sure of and the rear is a 4:56. it has a TH400 and i
think it has a 3800 stall or something like that, but i am not sure of that one. when i get the car i will give you a full list of the
components. the motor was professionally built, and it is a
hydralic roller motor.
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Old 10-25-2003, 10:05 PM
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are you just getting the shortblock? If it has a good induction set-up, Id leave it on there, upgrading the heads is a plus, but if the heads has been worked, matched to the carb, intake, stall and rear gear, it could actualy hurt the performance..being that it was professionaly build this is a possibility..to improve oull need better flowing heads, lighter weight is a plus, I figure every 100lbs lighter is worth a tenth in the 1/4..So, if it sports cast Iron heads now, going to alum, will help, if they flow the same, or better..when you buy the heads, ask for the flow#s, knowing this will help determine the cam needed to get the most out of the heads, then you want an intake matched to the flow of the heads, and this will help you figure the stall, witch relates to the weight and rear gear..I can tell you from what you have given, this is apparently a high rpm motor..its power band quessing would be 3800-7200, thats very good for cast iron square port heads, to make 600hp...so ill say they are ported, and ported by a pro nonetheless..HTH...
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Old 10-25-2003, 10:08 PM
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10:1 is a little low on the compression if you are going to run a cam with 308/316 duration. I'd go 12:1 especially with the aluminum heads.

Keep the 1050 Holley. It will be plenty.


15 years old? You must have worked really hard to earn the $$ for that car.
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Old 10-25-2003, 10:26 PM
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not really, its only $10,000.
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