Need help picking a cam please
Thread Starter
Burning Brakes
Joined: Feb 2006
Posts: 1,173
Likes: 5
From: Paducah Ky
Need help picking a cam please
OK. here is what I have:
408 small block
10.3 compression
fuel injected with Holley stealth ram intake
Dart Pro1 angle plug heads, 69cc, 215cc intake runners, 2.055 intake valves, 1.6 exhaust valves
1.6 roller rockers
Hooker super comp headers with 2.5" duals
auto transmission
3.55 gears
The cam I have now is a hdraulic roller:
engineworks 135306HR
duration @.050 230/230
advertised duration 306/306
lift .480/.480
lobe centers 106/110
lobe spread 108
This combo is making peak hp at 5400 RPM. Several have told me that this engine needed a cam with more lift but that was with the carb. The question now is what cam for this engine with a FI setup? Also, some have recommended a solid roller since this is a Sat night car and not a daily commuter. What do you guys think?????
408 small block
10.3 compression
fuel injected with Holley stealth ram intake
Dart Pro1 angle plug heads, 69cc, 215cc intake runners, 2.055 intake valves, 1.6 exhaust valves
1.6 roller rockers
Hooker super comp headers with 2.5" duals
auto transmission
3.55 gears
The cam I have now is a hdraulic roller:
engineworks 135306HR
duration @.050 230/230
advertised duration 306/306
lift .480/.480
lobe centers 106/110
lobe spread 108
This combo is making peak hp at 5400 RPM. Several have told me that this engine needed a cam with more lift but that was with the carb. The question now is what cam for this engine with a FI setup? Also, some have recommended a solid roller since this is a Sat night car and not a daily commuter. What do you guys think?????
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
5400 rpm won't cut it for power, go up on duration some, Chevys
327/350hp cam made power to 5600 with 222/222 .050 duration
you have not far off from 100 more cubes 230/230 is not enough
for a 408 size engine. go up to al least 236 .050 intake duration
so you can get it to make power in the 2500 to 6000 range.
327/350hp cam made power to 5600 with 222/222 .050 duration
you have not far off from 100 more cubes 230/230 is not enough
for a 408 size engine. go up to al least 236 .050 intake duration
so you can get it to make power in the 2500 to 6000 range.
Last edited by Little Mouse; Sep 18, 2007 at 01:45 AM.
Race Director
Joined: Oct 2000
Posts: 15,036
Likes: 79
From: central FL, near the beach.
SOLID YES!
see gkull's posts
and ask JIM 427Hotrod to help pick a cam
i agree with L Mouse, if u bother to get EFI get a bigger cam, since EFI can make it work better than a carb
.
Q what is the stall speed?
see gkull's posts
and ask JIM 427Hotrod to help pick a cam
i agree with L Mouse, if u bother to get EFI get a bigger cam, since EFI can make it work better than a carb
.
Q what is the stall speed?
