Need advice for my 383 build
12-06-2009, 09:09 PM
#1
Instructor
Thread Starter
Member Since: Jan 2009
Location: NJ
Posts: 193
Likes: 0
Received 0 Likes
on
0 Posts
Need advice for my 383 build
I am looking to upgrade to a 383 stroker motor this winter and have some questions. I want my motor to give the most power possible with still having decent drive ability. I do not drive the car much and when I do its mostly driven hard and see's the track 2-3 times a year. But I do like to take it for cruises now and then.
I already have an edelbrock RPM top end package- flat tappet cam(234/244 @ .050 lift), manifold, and heads. 750 mighty demon carb, 3000 stall, 3.70 gears, headers, exhaust, rocker arms, electronic ignition. I am looking to upgrade my cam to a hydraulic roller by comp which is there xtreme energy with a 242/248 @ .050 lift or the voodoo cam with 243/251. I would have my heads ported if people think it will help make more power with the larger cam and increased engine size.
Will these cams be a good choice or will they be to big for street car?
I already have an edelbrock RPM top end package- flat tappet cam(234/244 @ .050 lift), manifold, and heads. 750 mighty demon carb, 3000 stall, 3.70 gears, headers, exhaust, rocker arms, electronic ignition. I am looking to upgrade my cam to a hydraulic roller by comp which is there xtreme energy with a 242/248 @ .050 lift or the voodoo cam with 243/251. I would have my heads ported if people think it will help make more power with the larger cam and increased engine size.
Will these cams be a good choice or will they be to big for street car?
12-07-2009, 10:01 AM
#3
Drifting
Those cams are pretty big, but based on your intended usage either of them should work well.
Your heads are pretty small for a hot 383. If you are willing to spend the money on porting it would be well spent.
Of course as much as a full port job would cost you, along with a valve job, springs, etc., you may be better of selling your heads and buying a new set that are better suited to your engine.
Your heads are pretty small for a hot 383. If you are willing to spend the money on porting it would be well spent.
Of course as much as a full port job would cost you, along with a valve job, springs, etc., you may be better of selling your heads and buying a new set that are better suited to your engine.
12-07-2009, 10:15 AM
#4
Instructor
Thread Starter
Member Since: Jan 2009
Location: NJ
Posts: 193
Likes: 0
Received 0 Likes
on
0 Posts
Thank you for your reply...I just bought those heads last year but your probably right I'll try selling them and if I can do so for decent money Ill buy new heads. What size heads would you recommend 195's or 200's? Or would you go even bigger?
12-07-2009, 10:23 AM
#5
Race Director
http://www.cnc-motorsports.com/produ...78&CtgID=25184 , internally balanced with AFR 195 eliminator heads. This kit has a reground crank but will save you a lot of $. Good vendor. I would go with the next smaller cam. That one is pretty radical for mostly street use and a hydraulic roller will be done at around 6000 RPM unless you do some upgrades on springs and lifters. If you are OK with the manners of a little more radical cam the Lunati is probably the way I would go with their upgrade hydraulic lifters and beehive springs since your buying all new anyway. We just had a thread on the spring/lifter limitations on a big hydraulic roller. Get the right parts for your intended use the first time and spend a few extra $ rather than having to do it over.
http://forums.corvetteforum.com/c3-t...d-springs.html
http://forums.corvetteforum.com/c3-t...d-springs.html
Last edited by 63mako; 12-07-2009 at 09:52 PM.
12-07-2009, 08:32 PM
#6
Instructor
Thread Starter
Member Since: Jan 2009
Location: NJ
Posts: 193
Likes: 0
Received 0 Likes
on
0 Posts
Those cams are pretty big, but based on your intended usage either of them should work well.
Your heads are pretty small for a hot 383. If you are willing to spend the money on porting it would be well spent.
Of course as much as a full port job would cost you, along with a valve job, springs, etc., you may be better of selling your heads and buying a new set that are better suited to your engine.
Your heads are pretty small for a hot 383. If you are willing to spend the money on porting it would be well spent.
Of course as much as a full port job would cost you, along with a valve job, springs, etc., you may be better of selling your heads and buying a new set that are better suited to your engine.
12-07-2009, 09:45 PM
#7
Race Director
Not with that big of cam. The XR288HR is good with 10.5 to 1. Your cam choice is a quite a bit bigger. They figure 11 to 1 with 64 CC heads. I went with the same 6"rod and FT piston setup and AFR 195 heads in the 75CC size and milled them to 70 CC to get 10.4 to 1 comp and running the XE288HR.
Last edited by 63mako; 12-07-2009 at 09:51 PM.
