123 Last
Item Posts    Sort Order

My first 383 stroker, how much power should my set-up make?

 
Doogin2009
I love my Chevy Chevette!
Posts: 14
Joined: 11/09
Posted: 11/16/09 05:08 PM

350 4 bolt main
4.030 bore
3.750 stroke

Scat forged 4340 balanced crank
scat forged 6" I-Beam connecting rods
Scat forged +7.00cc flat top pistons

Trick Flow aluminum heads,72 combustion chamber, 195cc intake runner, 2.02" intake valve diam., 1.600" exhaust valve diam.
Trick Flow Hydraulic Cam advertise duration 308in./316ex., valve lift 495in/510ex.,duration at 050 inch lift 246in./254ex.
Trick Flow 1.5 full roller rocker
Trick Flow double roller timing chain
Trick Flow Hydraulic Flat Tappet lifters

Holley Dominator Single Plane High Rise air gaped intake
Holley 4150 750cfm double pumper carb

Hooker 1 3/4 competition long tube headers

This is my current build and i'm just curious how much power i should make with this set up. It will be going in my 91 camaro z28. I would really appreciate any ones help, thank you all!  

Post Reply
gettnlarge01
I mow my lawn and find Chevys
Posts: 3330
Joined: 09/09
Posted: 11/16/09 05:17 PM

You should be around 400hp  
luck is when skill and opportunity meet

Post Reply
Doogin2009
I love my Chevy Chevette!
Posts: 14
Joined: 11/09
Posted: 11/16/09 05:21 PM

really only 400? I was really anticipating much more than that.  

Post Reply
gettnlarge01
I mow my lawn and find Chevys
Posts: 3330
Joined: 09/09
Posted: 11/16/09 05:24 PM

Maybe 425 with everything put together right and tuned in. If you was to go with a hyd roller you could see more HP  
luck is when skill and opportunity meet

Post Reply
Pontiacman2
Moderator
Posts: 8956
Joined: 09/08
Posted: 11/16/09 05:32 PM

Ya 425-430 a bigger cam would help it is a little on the small side for the combo.  
Pontiacman2
Pontiacman2

Professional Hi-performance engine builder

Post Reply
Doogin2009
I love my Chevy Chevette!
Posts: 14
Joined: 11/09
Posted: 11/16/09 05:42 PM

Well what would u suggest to adjust with my set-up to achieve 500+ ? That's my goal i'm shooting for.  

Post Reply
Fastdad
I love my Chevy Chevette!
Posts: 12
Joined: 09/09
Posted: 11/16/09 06:03 PM

My engine is very simular and it dynoed at 435 hp with 425 torque at 6500 rpm..
An hp 850 holley would probably work better than the 750

Good luck..

Fastdad  

Post Reply
Fastdad
I love my Chevy Chevette!
Posts: 12
Joined: 09/09
Posted: 11/16/09 06:07 PM

More compression and more cam   ............ go for it.... you only live once and the heads and intake you have will flow pretty well with more velocity from higher compression and more cam..  

Post Reply
Doogin2009
I love my Chevy Chevette!
Posts: 14
Joined: 11/09
Posted: 11/16/09 06:12 PM

ok well a bigger cam? any suggestions? as far as cam/lifter set up?  

Post Reply
SMOKESHOW
I mow my lawn and find Chevys
Posts: 1001
Joined: 09/08
Posted: 11/16/09 06:41 PM

I like the XR274 on the street, it is a solid roller so you will have to adjust the valves from time to time.  A head with a bit smaller chamber to bump compression would also do you some good.  

Post Reply
Doogin2009
I love my Chevy Chevette!
Posts: 14
Joined: 11/09
Posted: 11/16/09 07:05 PM

well with my set up now i did a static compression check and it came out to 10.044196510804788...which is something like 10.0:1 right? Also i really wanna keep this motor on pump gas, so i was under the impression not to run any higher than 10.5:1 if i wanted to keep in running great on pump gas. So if you guys can give me any tips on how i can raise the over all power of my motor it would be greatly appreciated, detail's would be much appreciated thanks everyone.  

Post Reply
gettnlarge01
I mow my lawn and find Chevys
Posts: 3330
Joined: 09/09
Posted: 11/17/09 03:44 AM

The bigger cam will bleed off more cylinder pressure so you can run more static compression. You need to figure your dynamic compression. With the aluminum heads you could run up to 8.5:1 dynamic compression. What is your quench thickness? A tight quench will allow you to run more compression without sparkraddle and that'll make more power in itself.  
luck is when skill and opportunity meet

Post Reply
69nova355.
I mow my lawn and find Chevys
Posts: 2560
Joined: 08/09
Posted: 11/17/09 05:12 AM

+1. 64cc heads with a little biger cam will get you near the 450hp range. i wouldnt go any bigger then the 750dp.  

Post Reply
Pontiacman2
Moderator
Posts: 8956
Joined: 09/08
Posted: 11/17/09 07:12 AM

I would recommend one of these cams The Lunati P#60104 it has a .504/.525 lift or the Lunati P#60105 it has a .525/.546 LIft the 60104 would be a little better on the street.
I would stay with the 750CFM double pumper.
I have ran up to 11:1CR with aluminum heads on pump gas 93OCtane and had no problems.
Larger cams only bleed off compression at idle and lower speeds and lower RPM's.  
Pontiacman2
Pontiacman2

Professional Hi-performance engine builder

Post Reply
Doogin2009
I love my Chevy Chevette!
Posts: 14
Joined: 11/09
Posted: 11/17/09 02:36 PM

so basically i need more lift and less duration from my cam?....what are the pros and cons of both lift and duration in a cam?  

Post Reply
123 Last
TO TOP