Boosted Dorman truck intake?
04-12-2017, 08:48 AM
#61
dot to dot could mean anything these days bro. you GOTTA degree that thing.
dot to dot on the 5.3 in my daily (that uses this intake) was 6* retarded!
finally got my intake running a bit better...it had compressed a bit around the bolt holes (there are no washers or load spreaders like the stocker) so I'm sure it was leaking a bit.
but the VE tuning so far is going well. Just needs some spark tuning and then I'll put it back on the MAF
pardon me for not going back through your thread to find it, but what is your cam specs?
there are some pretty good calculators out there to estimate vacuum from given cam specs.
but again, dont fixate on a the highest possible vacuum signal. just get one that is stable for your motor.
dot to dot on the 5.3 in my daily (that uses this intake) was 6* retarded!
finally got my intake running a bit better...it had compressed a bit around the bolt holes (there are no washers or load spreaders like the stocker) so I'm sure it was leaking a bit.
but the VE tuning so far is going well. Just needs some spark tuning and then I'll put it back on the MAF
pardon me for not going back through your thread to find it, but what is your cam specs?
there are some pretty good calculators out there to estimate vacuum from given cam specs.
but again, dont fixate on a the highest possible vacuum signal. just get one that is stable for your motor.
cam specs are 214/228 .561/.561 115.5 +4.5 and it has about -10* overlap.
I know im not going to get the full 19" vacuum when my stock cam only pulled that much but what's driving me nuts is that I can't change vacuum with timing or rpm at idle. If it idles at 900 or 650 the idle is the same!
good to hear about the intake! There are a few things I'm not a fan of on the dorman. One being the mourning bolts and holes. When I get this thing figured out I'm going to put washers under the bolt heads to help spread the load alitte
better and your right about not having the crush preventative bolts as well. I actually pulled more vacuum with the dorman than the stocker even though it was just an inch or so.
