[rk0982]

i have a 350 bored 60 over with vortec heads i was wondering wich would be a better cam. The motor is in a 10982 gmc swb truck. also i have a 3,000 stall converter. do the these cams have a good lope to them
Cam Style Hydraulic flat tappet
Basic Operating RPM Range 2,000-5,800
Intake Duration at 050 inch Lift 214
Exhaust Duration at 050 inch Lift 214
Duration at 050 inch Lift 214 int./214 exh.
Advertised Intake Duration 264
Advertised Exhaust Duration 264
Advertised Duration 264 int./264 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.450 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.450 in.
Valve Lift with Factory Rocker Arm Ratio 0.450 int./0.450 exh. lift
Lobe Separation (degrees) 108
Intake Valve Lash 0.000 in.
Exhaust Valve Lash 0.000 in.
Grind Number 264 Mega
Computer-Controlled Compatible No

or


ISKY - Grind No./Type 278-MEGA HYDRAULIC.450 lift rule class; banked 1/4-3/8 mile tracks.RPM-Range 2000-6400Valve Lift - INT .450 EXT .450Valve Lash Hot - INT .000 EXT .000ADV Duration - INT

[F-BIRD'88]

The 278 mega cam is the lopey one. does not work with a stock converter.

The other one is better suited for a truck if you use the truck as a truck.

[rk0982]

ok thanks from what i have been reading that seems like it will be a good cam for the motor. I dont wanna get to radical of cam were i have to many problems but i want something that sounds and performs decent. do you think this will be my best bet along with iskys ani pump up lifters. i dont use the truck as a truck just want something that i can have fun in and get back and forth to work with. i have a 3,000 stall in trucjk now

[F-BIRD'88]

Originally Posted by rk0982

ok thanks from what i have been reading that seems like it will be a good cam for the motor. I dont wanna get to radical of cam were i have to many problems but i want something that sounds and performs decent. do you think this will be my best bet along with iskys ani pump up lifters. i dont use the truck as a truck just want something that i can have fun in and get back and forth to work with. i have a 3,000 stall in trucjk now

If you want to use the 278mega cam you need to recurve the distribuor.

26deg inital base idle timing, 36 total max mechanical at 3000-3200 (limit the distributor advance travel to 10-12deg

.....10-15deg vacuum advance for cruising.
The truck will want high ratio gears 4.10+ with the 278 mega.

search Dencouch 's posts for the hows and whys.

The smaller 264d cam will get better fuel mileage.

[rk0982]

ok thansk again do you know were i can hear sound clip of both cams. i havent heard one of theirs and am curoius on how they sound. I apperciate your help

[rk0982]

does the 278 have a very aggressive lope to it is there a big difference between that and the 264. i would rather have better performance i am curios how they both sound thanks

[123pugsy]

I may be wrong here, but I believe a lumpy sounding cam gives better high end and a smoother cam gives better low end torque.

What's your preference other than sound?

[rk0982]

I want performance the trucks a daily driver I want to sound good buy want it to be reliable to i want the biggest cam
I can without having to replace springs and worry about breaking thing s

[ap72]

Elgin makes a cam with 274/274 duration and .450/.450 lift on a 106 LSA and a 102 ICL. It works very well with a 3,000 stall and is very mild. Has killer mid range torque too, BUT milage is not the greatest. People have swapped it into otherwise stock engines with headers and have had good results. You need a good exhaust system with it though.

[sam_bo3]

search youtube people film everything. If it doesn't have your specific cam there will be one that is pretty darn close.

[ap72]

http://www.youtube.com/watch?v=LLWKKG1REXQ

Its the elgin cam I was talking about, its the one that comes in a Comp box labeled 274h06, but its the same cam, all the cam manufactures sell a version of this cam. Elgin just has the best price.

[rk0982]

thanks it does sound pretty good will the 201278 sound about the same

[ap72]

that cam, the Isky 278Mega, will actaully have an even more radical idle and will nto work with a stock converter as F'bird already noted. It will give you mpore hp up top, but sacrifice some low end power. Not a bad cam if you build the rest of the truck to suit it. For an otherwise stock truck though the cam I showed you is as large as I would go.

[ap72]

http://www.competitionproducts.com/E...tinfo/E1785PM/

E1785P is part number for that cam i recomended. Works fine with "z28" springs.

[V8 Super Beetle]

Here's a video link to the sound of the isky 278 cam. Well, from inside but you get the idea of how choppy it sounds.

http://s185.photobucket.com/albums/x...-bird88vid.flv