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Topic Review (Newest First)
09-26-2012 03:55 AM
454C10 ignition timing. big cams require lots of timing.
09-25-2012 10:05 PM
cobalt327
Quote:
Originally Posted by boobert View Post
I wouldn't call it a turd but definitely something wrong.
To begin with, set the timing curve up correctly. Info here.

Once the timing curve is set up right, see if the carb problem has gone away or is much better.

Knowing the cam specs will help. Short of pulling the cam or timing cover to get the numbers off the cam, you can find the specs close enough for tuning by following the info here.

Good luck.
09-25-2012 08:18 PM
boobert I was told it was a solid roller motor, I checked the valve lash it is zero.
09-25-2012 07:55 PM
S10 Racer
Quote:
Originally Posted by 68NovaSS View Post
S-10, all cam roller bearings I'm aware of are race only and aftermarket, you think GM ever put them in their OEM roller motors?
Did'nt say GM put them in as OEM. I was asking if he had a true roller that required the cam tunnel to be bored.
09-25-2012 03:47 PM
68NovaSS
Quote:
Originally Posted by S10 Racer View Post
There are retro fit kits available to install a roller cam into a standard block but a true roller cam will have roller cam bearings.
S-10, all cam roller bearings I'm aware of are race only and aftermarket, you think GM ever put them in their OEM roller motors?
09-24-2012 10:58 PM
boobert Thanks Buddy!!
09-24-2012 10:54 PM
vinniekq2 dont worry,we will get you there.check the above mentioned things and get ready to order tires by the dozen
09-24-2012 10:48 PM
boobert
Quote:
Originally Posted by vinniekq2 View Post
that little car with 400 cubes will scare the crap out of you when its tuned.some minor bugs,you dont need any major parts unless the engine is damaged. A big cam wont hurt you
It should be blazing em all the way down the street but it's not.
09-24-2012 10:24 PM
vinniekq2 that little car with 400 cubes will scare the crap out of you when its tuned.some minor bugs,you dont need any major parts unless the engine is damaged. A big cam wont hurt you
09-24-2012 10:16 PM
boobert One more thing I would add is cranking compresion test averaged about 140 psi. Done WOT with all plugs out and a warm engine. Between 135 and 145
09-24-2012 09:57 PM
boobert I wouldn't call it a turd but definitely something wrong.
09-24-2012 09:53 PM
S10 Racer
Quote:
Originally Posted by vinniekq2 View Post
you have a bb,torque is not an issue,,,lol
Regardless if a BB or not, with the wrong parts or setup, a torque monster diesel can be turned into a turd.
09-24-2012 09:43 PM
vinniekq2 you have a bb,torque is not an issue,,,lol
09-24-2012 09:42 PM
boobert No spacer would that help?
09-24-2012 09:36 PM
S10 Racer
Quote:
Originally Posted by boobert View Post
It has a 12 bolt 3.73 gears eaton posi diff,Edelbrock air gap intake with a 750 DP Holley. This motor has days it reponds fairly well but most days it's off, that's why I think carb. Would a Vacuum secondary carb be a better choice?
Pull the carb and see if the intake is a single or dual plane. If it's a single plane, that could be your problem. You need a dual plane for low end torque. Does it have a carb spacer and if so, how tall?
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