How fast?
#31
Senior Member
MASTER BUILDER
Join Date: Jul 2006
Posts: 184
It could run low 11's, maybe even 10's. Obviously a lot of factors will contribute to that though. 3890lb 69 Chevelle, 496, 9.7:1, mildly ported 781's, 240ish, .580 lift solid cam, Perf. RPM air gap, Quick fuel 850, 10 inch converter, 3.55 gears, drag radials theu 3 inch ex, all the way out the back, runs 11.20's at 122.
Frank
Frank
#33
Senior Member
MASTER BUILDER
Thread Starter
Join Date: Apr 2009
Posts: 175
Originally Posted by gungho
Yes I concur,but I was saying at best,with good weather and all dialed,but more like a mid twelve to start with.that would be just my guess,of course there are a lot of variables,I would go with the biggest cam the heads will allow if I were running a four speed.
#35
Senior Member
MASTER BUILDER
Join Date: Jul 2006
Posts: 184
Sounds like in good fall air on a good track, it will go low 11's easily. Mid 90's and super humid, obviously is no good for good et's. 119mph, will turn into 122-123, maybe a bit faster with tuning. With that mph, you could hit a high 10 even, if you got the car to launch good.
For the record, we have built 2 496's this year, with those heads. Both sets were ported, one set a bit more than the other, but not what I would call radical porting. One was a hyd roller deal, made 700hp and 630tq on pump gas. The other was a solid roller deal, on pump gas, made 740hp and 650tq. Neither engine was set on kill.
Frank
For the record, we have built 2 496's this year, with those heads. Both sets were ported, one set a bit more than the other, but not what I would call radical porting. One was a hyd roller deal, made 700hp and 630tq on pump gas. The other was a solid roller deal, on pump gas, made 740hp and 650tq. Neither engine was set on kill.
Frank
#38
Senior Member
RACING JUNKIE
Join Date: May 2006
Posts: 2,044
Going from a 26 tall tire to a 28 incher its gonna kill some ET so expect that.
You can compensate for that and pick some ET by Footbraking/stalling the car up as high as you can without pushing thru the lights.
JMO>Cp
You can compensate for that and pick some ET by Footbraking/stalling the car up as high as you can without pushing thru the lights.
JMO>Cp