Re: Another Trickflow head question
[Re: frank]
#2460534
03/03/18 04:14 PM
03/03/18 04:14 PM
|
Joined: Jan 2003
Posts: 14,492 So. Burlington, Vt.
fast68plymouth
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 14,492
So. Burlington, Vt.
|
Look at what TF warranties when you buy the assembled heads.
I've had 4 sets of the TF 240's here, and frankly I thought the parts seemed perfectly fine.
The only caveat for me is, for many solid flat tappet cams, I'm not in love with either of their spring choices. One is a little lighter than I'd prefer, the other too stiff.
No way would I bother with bare castings. That's just a way to add hundreds of dollars to the heads.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
|
|
|
Re: Another Trickflow head question
[Re: frank]
#2460545
03/03/18 05:00 PM
03/03/18 05:00 PM
|
Joined: Sep 2003
Posts: 1,935 Grove, OK
hosehead
top fuel
|
top fuel
Joined: Sep 2003
Posts: 1,935
Grove, OK
|
Sorry to slightly hijack, but what springs did you use for a solid cam? I just bought a .557 purple cam and am about to swap it in from a mild hydraulic. I have 240's as well.
63 Plymouth savoy 65 d100 66 dart race project 58 plymouth suburban
|
|
|
Re: Another Trickflow head question
[Re: frank]
#2460550
03/03/18 05:19 PM
03/03/18 05:19 PM
|
Joined: Jan 2003
Posts: 14,492 So. Burlington, Vt.
fast68plymouth
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 14,492
So. Burlington, Vt.
|
Assuming you bought the version with the "smaller" springs...... For that cam with 1.5 rockers I would just adjust the installed height to get those springs to 145-150 on the seat(around 1.80-1.82 installed height). The rate of that spring is fine for that type of cam if the seat pressure is set properly.
IMO, the 1.550 flat tappet/hyd roller spring they use is on the stiff side for most hot street or street/strip type applications.
In my original TF240 thread I'm pretty sure I posted the numbers for that spring....... It did not match the specs on the instruction sheet that came with the heads, but I seem to think it was pretty close to what TF shows for specs on their spring page. It's been a while....... You'd have to do a search.
Depending on how high you want to turn the motor, what rockers, etc...... Something along the lines of a Comp 928 or Isky 8005a is what I'd be looking at, but both of those install shorter that how the 1.550 springs come set up from TF, so you'll have to play with shims/retainers/locks to get where you want.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
|
|
|
Re: Another Trickflow head question
[Re: fast68plymouth]
#2460562
03/03/18 05:49 PM
03/03/18 05:49 PM
|
Joined: Feb 2015
Posts: 2,070 CA
crackedback
top fuel
|
top fuel
Joined: Feb 2015
Posts: 2,070
CA
|
Assuming you bought the version with the "smaller" springs...... For that cam with 1.5 rockers I would just adjust the installed height to get those springs to 145-150 on the seat(around 1.80-1.82 installed height). The rate of that spring is fine for that type of cam if the seat pressure is set properly.
IMO, the 1.550 flat tappet/hyd roller spring they use is on the stiff side for most hot street or street/strip type applications.
In my original TF240 thread I'm pretty sure I posted the numbers for that spring....... It did not match the specs on the instruction sheet that came with the heads, but I seem to think it was pretty close to what TF shows for specs on their spring page. It's been a while....... You'd have to do a search.
Depending on how high you want to turn the motor, what rockers, etc...... Something along the lines of a Comp 928 or Isky 8005a is what I'd be looking at, but both of those install shorter that how the 1.550 springs come set up from TF, so you'll have to play with shims/retainers/locks to get where you want. Agreed, a .060 shim would bring the seat up to ~143 at 1.84 if my rusty math skills are correct. An .070 would be ~147 on seat.
|
|
|
Re: Another Trickflow head question
[Re: frank]
#2460573
03/03/18 06:40 PM
03/03/18 06:40 PM
|
Joined: Sep 2003
Posts: 1,935 Grove, OK
hosehead
top fuel
|
top fuel
Joined: Sep 2003
Posts: 1,935
Grove, OK
|
Thanks guys. I appreciate the info!
63 Plymouth savoy 65 d100 66 dart race project 58 plymouth suburban
|
|
|
Re: Another Trickflow head question
[Re: crackedback]
#2460582
03/03/18 07:20 PM
03/03/18 07:20 PM
|
Joined: Aug 2003
Posts: 43,116 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,116
Bend,OR USA
|
Assuming you bought the version with the "smaller" springs...... For that cam with 1.5 rockers I would just adjust the installed height to get those springs to 145-150 on the seat(around 1.80-1.82 installed height). The rate of that spring is fine for that type of cam if the seat pressure is set properly.
IMO, the 1.550 flat tappet/hyd roller spring they use is on the stiff side for most hot street or street/strip type applications.
In my original TF240 thread I'm pretty sure I posted the numbers for that spring....... It did not match the specs on the instruction sheet that came with the heads, but I seem to think it was pretty close to what TF shows for specs on their spring page. It's been a while....... You'd have to do a search.
Depending on how high you want to turn the motor, what rockers, etc...... Something along the lines of a Comp 928 or Isky 8005a is what I'd be looking at, but both of those install shorter that how the 1.550 springs come set up from TF, so you'll have to play with shims/retainers/locks to get where you want. Agreed, a .060 shim would bring the seat up to ~143 at 1.84 if my rusty math skills are correct. An .070 would be ~147 on seat. Never trust the valve spring specs Always verify the actual pressures for your springs. especially on a race motor or hot street motor Buy what tools you need or take the heads to a shop that has a valve spring tester to verify the pressures I've seen 30 lbs. different in the same set of heads installed at the same heights I shoot for + or - 5 lbs. variance on the seats and 10 to 20 lbs. open and between .060 and .100 from coil bind on all the heads I set up Be thorough or don't worry about the minor details
Last edited by Cab_Burge; 03/03/18 07:23 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: Another Trickflow head question
[Re: AndyF]
#2460614
03/03/18 09:20 PM
03/03/18 09:20 PM
|
Joined: Aug 2003
Posts: 3,245 Between a rock & a hard place
cudadoug
master
|
master
Joined: Aug 2003
Posts: 3,245
Between a rock & a hard place
|
I'm running both 240 and 270 heads right out of the box on my 470 engines. 700+ hp from each engine without any issues. I have about 90 pulls on the 240 heads, 30 pulls on the 270 heads. With the as supplied springs??
|
|
|
Re: Another Trickflow head question
[Re: cudadoug]
#2460625
03/03/18 09:56 PM
03/03/18 09:56 PM
|
Joined: Sep 2003
Posts: 1,935 Grove, OK
hosehead
top fuel
|
top fuel
Joined: Sep 2003
Posts: 1,935
Grove, OK
|
I'm running both 240 and 270 heads right out of the box on my 470 engines. 700+ hp from each engine without any issues. I have about 90 pulls on the 240 heads, 30 pulls on the 270 heads. With the as supplied springs?? That's what I was wondering......
63 Plymouth savoy 65 d100 66 dart race project 58 plymouth suburban
|
|
|
Re: Another Trickflow head question
[Re: frank]
#2460635
03/03/18 10:32 PM
03/03/18 10:32 PM
|
Joined: Jan 2003
Posts: 14,492 So. Burlington, Vt.
fast68plymouth
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 14,492
So. Burlington, Vt.
|
The as supplied roller springs are pretty nice.
They would work just fine with the cam Andy used for those tests with 1.5 or 1.55 rockers.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
|
|
|
Re: Another Trickflow head question
[Re: cudadoug]
#2460644
03/03/18 10:55 PM
03/03/18 10:55 PM
|
Joined: Jan 2003
Posts: 30,994 Oregon
AndyF
I Win
|
I Win
Joined: Jan 2003
Posts: 30,994
Oregon
|
I'm running both 240 and 270 heads right out of the box on my 470 engines. 700+ hp from each engine without any issues. I have about 90 pulls on the 240 heads, 30 pulls on the 270 heads. With the as supplied springs?? Yes, I have the Trick Flow springs and retainers on my 240 heads. The 270 heads switched over to K950 springs when I put the super aggressive cam in it. The roller cam springs with the Ti retainers are high quality parts. Should be fine for most bracket type roller cams.
|
|
|
Re: Another Trickflow head question
[Re: AndyF]
#2460689
03/04/18 01:07 AM
03/04/18 01:07 AM
|
Joined: Jan 2003
Posts: 1,807 North Dakota
Azzkikrcuda
top fuel
|
top fuel
Joined: Jan 2003
Posts: 1,807
North Dakota
|
I checked the smaller 1.460" O.D. dual spring with damper (TFS-16893) and all the springs had consistent pressures but were to light for my cam without a bunch of shims. They were inline with TF's posted specs. I used Comp 930-16 springs to get 145lbs pressure on the seat.
The only Carbs I care about are under the hood!
|
|
|
Re: Another Trickflow head question
[Re: ccdave]
#2462485
03/07/18 11:35 AM
03/07/18 11:35 AM
|
Joined: Jul 2013
Posts: 561 USA
B3RE
mopar
|
mopar
Joined: Jul 2013
Posts: 561
USA
|
Buy the springs from PAC and the valves from who ever is your favorite manufacturer. You now know what you have The springs are PAC, and the valves are Ferrea. Buying them separately only makes the head more expensive, unless they don't fit the application to begin with. And now you know!
Mike Beachel
I didn't write the rules of math nor create the laws of physics, I am just bound by them.
|
|
|
|
|