Hey guys, i was an active member on here prpbably 8 years ago but was out of hot rodding for awhile but now i'm getting back into our disease.....So I'm putting together a 408 w/ a solid roller and I've got pretty much everything besides the cam, putting this motor together with parts from a ex nitrous motor, but i'm not going to run the fogger so i'm swapping pistons and cam.
Here is what i have and wont change:
-434 with lunati splayed main caps
-4340 forged crank and 6.0" H Beams
-Dart Pro 1 230cc with just light clean up work
-matching dart single plane w/ fogger(removing fogger)
-Erson roller rockers, comp stud girdle
-MSD pro billet
Application:
'51 f100 pro street, back halved w/ 9 inch, 4 linked, 18.5" mickeys, th400 w/ 3500 stall, low 4ish gear
Up for decision:
Compression ratio and Cam, I want to easily be able to run on 91 octane, not have to de tune to run pump gas and be on the edge of destruction
I was thinking around 11.5 and this cam
http://www.compcams.com/Company/CC/cam- ... d=308&sb=0
Any help appreciated, should i lower the CR, is the cam too big?
below some pics of where i'm at now
because the goal is to run street high test gas,and produce killer hp, Id suggest dropping the compression ratio to 11:1 MAX
BTW for anyone who doesn,t know a 434 is a 4" stroke crank in a 4.155 bore 400 block (thats .030 over bore)
and Id strongly suggest going with a BILLET CORE on this lunati cam below and installing it split overlap
http://www.lunatipower.com/Product.aspx?id=1995&gid=290
a 11.1 cpr 434 sbc the cam 4 degrees retarded ,with those components and a 4.11 rear gear and the 29" slicks will be a nice TRACK/occasional street combo
youll want 1 7/8" headers with about 37" primarys and about 16" 3.5" collectors
heres a DD2000 wild guess at power levels with a bigger carb.(Id just use a 2" open spacer to increase the plenum volume with the current carb and intake)
Here is what i have and wont change:
-434 with lunati splayed main caps
-4340 forged crank and 6.0" H Beams
-Dart Pro 1 230cc with just light clean up work
-matching dart single plane w/ fogger(removing fogger)
-Erson roller rockers, comp stud girdle
-MSD pro billet
Application:
'51 f100 pro street, back halved w/ 9 inch, 4 linked, 18.5" mickeys, th400 w/ 3500 stall, low 4ish gear
Up for decision:
Compression ratio and Cam, I want to easily be able to run on 91 octane, not have to de tune to run pump gas and be on the edge of destruction
I was thinking around 11.5 and this cam
http://www.compcams.com/Company/CC/cam- ... d=308&sb=0
Any help appreciated, should i lower the CR, is the cam too big?
below some pics of where i'm at now
because the goal is to run street high test gas,and produce killer hp, Id suggest dropping the compression ratio to 11:1 MAX
BTW for anyone who doesn,t know a 434 is a 4" stroke crank in a 4.155 bore 400 block (thats .030 over bore)
and Id strongly suggest going with a BILLET CORE on this lunati cam below and installing it split overlap
http://www.lunatipower.com/Product.aspx?id=1995&gid=290
a 11.1 cpr 434 sbc the cam 4 degrees retarded ,with those components and a 4.11 rear gear and the 29" slicks will be a nice TRACK/occasional street combo
youll want 1 7/8" headers with about 37" primarys and about 16" 3.5" collectors
heres a DD2000 wild guess at power levels with a bigger carb.(Id just use a 2" open spacer to increase the plenum volume with the current carb and intake)