383 Stroker RX8 hoping for 500+ hp and tq buld.
#1
383 Stroker RX8 hoping for 500+ hp and tq buld.
Well as a lot of you know...cause you've been buying my parts I'm building me a 383 stroker to drop into my car.
I've read a lot about how people have asked about cost to do it and what has to be done in order to get a motor this size into this car. Well as I build mine I'll show pictures and details about things.
Of course I might jump the gun on something..so you might see my oops that I have to fix later on.
As you can tell in the first picture we went ahead and just cut out the two cross members and completely unbolted everything to get it all outta the way. So much easier to see and weld this way.
Now this is our guessed at location. As you can tell I think we could of left the middle support. But we'll see when we get everything a little more solid in there.
Now when you do a build you always have to apply new paint...That's gotta add atleast 15hp ya know.
But anyways before the half a million questions come in. I'm still waiting on the transmission.....
But as far as cost I'll add to it as I go.
350 4 bolt main....free was sitting in the corner
383 Stroker kit. I wanted forged but couldn't afford it so 824.95 ESP-B13455E030
Cam and lifter kit...this baby has some lobe to her. 956.95
CCA-K12-433-8
ARP Head Bolts 111.95
RP-134-3604
RHS 220 CC racing heads 599.95 a piece 1199.90
CCA-12005-01
Gasket Set 61.95
FEL-FS7733PT-2
Oil pump 103.69
SLP-224-43389V
RPM Air Gap intake used ebay reconditioned 203.95
7501
Holley double pumper 770cc avenger carb used 250.00
T56 Camaro transmission with everything off of ebay 1250.00
Custom made oil pan to save money
Fuel Regulator
Motor mounts
ARP Main Bolts
clutch and pressure plate
flywheel
Roller rockers
Distributor
wires
plugs
Push Rods
Now remember all of this is off the top of my head. So I'm sure I forgot something.
I've read a lot about how people have asked about cost to do it and what has to be done in order to get a motor this size into this car. Well as I build mine I'll show pictures and details about things.
Of course I might jump the gun on something..so you might see my oops that I have to fix later on.
As you can tell in the first picture we went ahead and just cut out the two cross members and completely unbolted everything to get it all outta the way. So much easier to see and weld this way.
Now this is our guessed at location. As you can tell I think we could of left the middle support. But we'll see when we get everything a little more solid in there.
Now when you do a build you always have to apply new paint...That's gotta add atleast 15hp ya know.
But anyways before the half a million questions come in. I'm still waiting on the transmission.....
But as far as cost I'll add to it as I go.
350 4 bolt main....free was sitting in the corner
383 Stroker kit. I wanted forged but couldn't afford it so 824.95 ESP-B13455E030
Cam and lifter kit...this baby has some lobe to her. 956.95
CCA-K12-433-8
ARP Head Bolts 111.95
RP-134-3604
RHS 220 CC racing heads 599.95 a piece 1199.90
CCA-12005-01
Gasket Set 61.95
FEL-FS7733PT-2
Oil pump 103.69
SLP-224-43389V
RPM Air Gap intake used ebay reconditioned 203.95
7501
Holley double pumper 770cc avenger carb used 250.00
T56 Camaro transmission with everything off of ebay 1250.00
Custom made oil pan to save money
Fuel Regulator
Motor mounts
ARP Main Bolts
clutch and pressure plate
flywheel
Roller rockers
Distributor
wires
plugs
Push Rods
Now remember all of this is off the top of my head. So I'm sure I forgot something.
#10
An LSX swap is one thing, but I'm disgusted that you would use a carburetor. Pre historic garbage. You're like my old neighbor who sold his C6 Z06 so he could drop a carb'd SBC into a 94 Firebird. Carb'd 383's are pitiful engines without spray.
Last edited by arghx7; 02-28-2010 at 08:30 PM.
#14
Well I could say yes and no to the carb. Fuel injection does have it's benefits but why spend the 5 grand for the LSX which is only like 335 hp or something. I'm not sure of numbers but I know it's in the 3's I can build this engine all brand new besides my block and I'm figureing my total cost with the transmission will be 5 maybe 6 and I spent 1250 for the transmission.
http://www.youtube.com/watch?v=w_9Ylm32BpI
your totally right....that carb 383 has to be slow as hell.
#15
Oh and yes... I actually carried that damn motor from the car...threw the yard....and now the steps to my basement. I only made it from the car to porch before the crank had to go. and yes the block by it's self is still heavy... I'd say about 100 pounds.
Before I install this motor I'll weight each item so I'll know a exact weight of the motor.
#16
It's a Cavalier
I like it, but, yah, the carb is going to be a bit tall, and wow, to get 500hp out of it N/A, you know you're going to need that lumpy cam and pretty good heads to do it with a 383 stroker.
Iron block typically weighs 90 lbs more than an aluminum block
Tear it up man! I love seeing these V8 RX8's coming out of nowhere!
Iron block typically weighs 90 lbs more than an aluminum block
Tear it up man! I love seeing these V8 RX8's coming out of nowhere!
#17
I like it, but, yah, the carb is going to be a bit tall, and wow, to get 500hp out of it N/A, you know you're going to need that lumpy cam and pretty good heads to do it with a 383 stroker.
Iron block typically weighs 90 lbs more than an aluminum block
Tear it up man! I love seeing these V8 RX8's coming out of nowhere!
Iron block typically weighs 90 lbs more than an aluminum block
Tear it up man! I love seeing these V8 RX8's coming out of nowhere!
Well 220cc heads are good at .5 lift to about 570 hp..and my lift is like .56 and yeah my cam is a huge lobe cam. I went to the street/strip cam's and the last one said it wasn't drivable..track only. Next one said very rough idle...but could be driven. The one below it said something about rough idle but still streetable to someone who can tolerate it.. my advertised lift is like 284/292 or something. But all in all this motor should be a easy 500 just how high is the question.
#19
Oh and yes... I actually carried that damn motor from the car...threw the yard....and now the steps to my basement. I only made it from the car to porch before the crank had to go. and yes the block by it's self is still heavy... I'd say about 100 pounds.
Before I install this motor I'll weight each item so I'll know a exact weight of the motor.
Before I install this motor I'll weight each item so I'll know a exact weight of the motor.
After selling the 928 I never expected to own another touring class car that drove as well. The RX8 changed that. While it doesn't have the stump pulling torque and is a little more thirtsy on the highway its a much more fun to drive car.
The LT1 was stock internally and delivered an honest 24 MPG at 70-75 MPH. City wasn't so good, probably because I just couldn't avoid driving it miserly. Anywhere from 12 - 15 MPG average on city driving.
I think if I were to do a conversion on the RX8 it would be a turbo 4. Good luck on the V8 adventure its sounds pretty cool.
#20
As far as the rear end I use to put 400 whp to it and it held up find and never had a problem. I don't plan to drag race it. If I do it will be just a day worth of fun. But I'm hoping the rear end will hold up.
#21
It's a Cavalier
This setup is good for 425 to the wheels? Is that the goal?
#22
But my heads well are 220cc in the intake and like 180 or 190 in the exhaust. compared to your stock head of like 170 intake.
Setting the stock head beside the new one. The new one is almost a inch taller. Since it's taller it have a lot larger intake and exhaust hole. The huge cam... the air gap intake with a double feed, and double pump carb. This thing should be nuts.
I'm running an adjustable distributor as well. So I'll be able to tweak my timing curve as well.
As some say carb is old history. But carb with new technology is killer. Tuned to perfection. In this case a adjust in fuel pressure will adjust my wot fuel ratio. While my screws will adjust the idle.
#23
Registered
iTrader: (3)
i miss the carb! A lot.
New tech with carbs is crazy---it still doesnt give you the fine tuning as injectors do but hell --who needs fine tuning for the street with power like this!
What kind of intake will this badboy have? Single or dual plane?
Havent answered my ? about the chassis?
cross that bridge when you get there railroad man?
New tech with carbs is crazy---it still doesnt give you the fine tuning as injectors do but hell --who needs fine tuning for the street with power like this!
What kind of intake will this badboy have? Single or dual plane?
Havent answered my ? about the chassis?
cross that bridge when you get there railroad man?
#24
i miss the carb! A lot.
New tech with carbs is crazy---it still doesnt give you the fine tuning as injectors do but hell --who needs fine tuning for the street with power like this!
What kind of intake will this badboy have? Single or dual plane?
Havent answered my ? about the chassis?
cross that bridge when you get there railroad man?
New tech with carbs is crazy---it still doesnt give you the fine tuning as injectors do but hell --who needs fine tuning for the street with power like this!
What kind of intake will this badboy have? Single or dual plane?
Havent answered my ? about the chassis?
cross that bridge when you get there railroad man?
Well yeah not fine tuned...for every RPM but you can tune pretty good with them.
I'll be running the Edelbrock air gap p/n 7501 it's a dual plane...since I'm still on the street dual is better. As far as the chassis I said I stuck 400 to it before. I'm just hoping it holds up pretty well.
Anyways on to another note... I'm still waiting on my main bolts so I can't build the bottom end of the motor....and I'm waiting on my other head..and the damn cam kit. But otherwise my engine is ready to be built. I'm going to build my own oil pan for clearance reasons. I want to keep it up off of the ground as much as possible. I'm making it wide rather then deep so I'll end up with a 8 qt or so oil pan. Who knows I may just go 10 quarts.
Oh and my transmission come in tomorrow. But with my th 350 bolted to the bock to see my angles and get the engine sitting where it needs to be.. here is a idea of what it's going to look like with a high rise intake.
#25
Registered
iTrader: (3)
maybe you need a fabrication mock up block and trans for fitting purposes?
The carburetor will make the drive ability and tuning a whole lot easier --never mind the oem puter.
How are you going to do the steering?
Sorry dude--i have too many questions
But following this trend.........!
Dont forget the increase in TQ --that may be a big difference from the engine you had before.
TQ can bend things---ask me how I know
OD
The carburetor will make the drive ability and tuning a whole lot easier --never mind the oem puter.
How are you going to do the steering?
Sorry dude--i have too many questions
But following this trend.........!
Dont forget the increase in TQ --that may be a big difference from the engine you had before.
TQ can bend things---ask me how I know
OD