• 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
New camshaft time! 377 in Cleveland with CHI 2V heads. IT RUNS! Video on page 2
#11
Took it the rest of the way down today, and confirmed some numbers.

Think I am going to go with this, a little more conservative than what I had, but still keeps me in the pump gas dynamic compression range.

Howards.

Stock #: MC230041-12DL
UPC #: 840793148097
Camshaft Series: Max Certified
Camshaft Type: Hydraulic Flat Tappet
Duration Exhaust: 289
Duration Intake: 279
Duration at 050 Exhaust: 235
Duration at 050 Intake: 225
Engine: 351C, 351M, 400
Firing Order: 1-5-4-2-6-3-7-8
Intake Centerline: 108
Lobe Separation: 112
Engine Manufacturer: Ford
RPM Range: 2400 to 6400
Valve Lift Exhaust: .542
  Reply
#12
Hi

Im running this cam with 2v Chi heads(65cc) and AIRgap intake. Sniper EFi . With flat pistons compression is 10.1

Camshaft Type: Hydraulic Flat Tappet
Duration Exhaust: 281
Duration Intake: 281
Duration at 050 Exhaust: 227
Duration at 050 Intake: 227
Engine: 351C, 351M, 400
Firing Order: 1-3-7-2-6-5-4-8
Intake Centerline: 104
Lobe Separation: 108
Engine Manufacturer: Ford
RPM Range: 2400 to 6000
Valve Lift Exhaust: .542

For knowing your limit you have to pass it thumb
  Reply
#13
I think you should consider a custom cam from one of the well known builders that have real experience with clevelands like Dave McClain, Brent Lykins, or Randy Malik to name a few. There is so much more to a cam than lift and duration @ .050.

73 conv. 460, D0VE large valve heads, Performer RPM manifold, Voodoo 227/233 cam, Holley 950 HP carb, C6 trans, 3.25 trak-loc.
  Reply
#14
+1 on TommyK's post. Chuck
  Reply
#15
rollers are fine as long as you use good ones. comp cams lifters have been crap for at least 20 years. i use morel roller lifters. both lunati and howards sells one style of morels under their own name and the lunato ines are a little less unless you get them from colorado speed.

i would get a custom cam as was suggested but i would only use chris straub.

http://www.straubtechnologies.com/
  Reply
#16
Cam decision is locked down.
I bought the Howards flat tappet MC230041-12DL kit.

Had to go with .062" thick Cometic head gaskets to squeak me into the pump gas range at 10.95:1 static, about 8.5:1 dynamic.

Appreciate the info from everyone, if I ever get a money tree I will build up an aluminum block Clevor and go no holds barred on that build.

In a few weeks I should have it back on the engine stand to break in the cam and see what happens.
  Reply
#17
(05-12-2018, 10:12 AM)Bentworker Wrote: Cam decision is locked down.
I bought the Howards flat tappet MC230041-12DL kit.

Had to go with .062" thick Cometic head gaskets to squeak me into the pump gas range at 10.95:1 static, about 8.5:1 dynamic.

Appreciate the info from everyone, if I ever get a money tree I will build up an aluminum block Clevor and go no holds barred on that build.

In a few weeks I should have it back on the engine stand to break in the cam and see what happens.

i hope you bought crane anti pump lifter or crower cool face lifters also.

you would not have had to use $200.00 head gaskets is you had a custom cam made.
  Reply
#18
(05-12-2018, 10:53 AM)barnett468 Wrote:
(05-12-2018, 10:12 AM)Bentworker Wrote: Cam decision is locked down.
I bought the Howards flat tappet MC230041-12DL kit.

Had to go with .062" thick Cometic head gaskets to squeak me into the pump gas range at 10.95:1 static, about 8.5:1 dynamic.

Appreciate the info from everyone, if I ever get a money tree I will build up an aluminum block Clevor and go no holds barred on that build.

In a few weeks I should have it back on the engine stand to break in the cam and see what happens.

i hope you bought crane anti pump lifter or crower cool face lifters also.

you would not have had to use $200.00 head gaskets is you had a custom cam made.

Rocking mystery Howards lifters that came with the kit.  
I don’t have a Delorean with a flux capacitor otherwise I might have gone with something different.

The head gasket I am not sure I would have got around.  With a standard .040” gasket my static was 11.57:1.  I don’t think the most gifted cam grinder in the world with deep black art knowledge would have been able to come up with a flat tappet magic grind that would get the dynamic compression ratio low enough for premium pump gas, and give me enough vacuum for power brakes, with some level of streetability with a stock head gasket.  That being said I never called any of them and asked.

I know the Gaskets are spendy, but running a MLS gasket with the aluminum heads seems like a good investment.
  Reply
#19
(04-14-2018, 09:51 PM)Bentworker Wrote: Honestly I don’t know what brand they were.

Scratch that!

Found the invoice.  Lifters were Comp brand

those lifters are complete junk and may also prematurely wear your cam. probably the worst lifters i have ever seen and i am a comp cams dealer.
[+] 1 user Likes barnett468's post
  Reply
#20



Let there be life!

Finally got it together.  10.95:1 static, running on the stand with premium pump gas with octane booster.  

This is the Cleveland with that flat tappet setup from Howards.  MC230041-12DL

  Reply
Share Thread:  


Possibly Related Threads…
Thread Author Replies Views Last Post
runninpony re-torque heads NOT A T5 6 140 08-07-2019, 09:54 AM
Last Post: Hemikiller
  351 Cleveland Identification Guide Don C 1 270 06-10-2019, 07:13 PM
Last Post: goodnigh
  351 cleveland oil pan gasket Nige 8 499 04-19-2019, 07:40 AM
Last Post: kcmash
  Ford vs CHI vs AFD vs TFS heads for Stroker mikeyhunts 15 717 04-12-2019, 02:50 PM
Last Post: mikeyhunts
  Prepping 351C Heads Don C 0 428 04-02-2019, 06:19 PM
Last Post: Don C
  Hagerty Article on the 351 Cleveland 1973_Mustang_Conv 2 364 04-01-2019, 05:24 PM
Last Post: donkost
  351 Cleveland Oil Restrictors – 351C Oiling Fix Boss1Ray 5 752 03-31-2019, 09:35 AM
Last Post: Carolina_Mountain_Mustangs
  351 cleveland mild build 2v heads Pastorpat 35 5,235 03-17-2019, 01:10 PM
Last Post: Mister 4x4



Users browsing this thread: 1 Guest(s)