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Discussion Starter · #1 ·
Hallo,
I play a bit with the desktop dyno .
Looking how to perform my 351 at next.

My quetion is :
I want to change the cam from hydr. flat to the solid ones .
Would the hydraulic flat tappet cam work with solid lifters also ?
I am thinking a bit on the XE- 274 cam with solid lifter setup .

Now the 351 has ported 302 heads with small chambers (comp-ratio about 10 to 1)
but want to change at next to the trickflow tw heads (now definetly)

Thanks for any response
 

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1) Hydraulic cam will NOT work with solid lifters.(it has no "clearance ramps&quot
.
2)Solid cam will NOT work with hydraulic lifters.(the ramps confuse the lifters)
3)Solid cam and lifters REQUIRE an adjustable valve train so that you can set the clearance.
Good luck!
 

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Discussion Starter · #3 ·
Ok,
What solid cam you would prefer for this engine . (want power from 1500 to 6000 +)
C4 with 3.0 rear
The adjustable valvetrain is no problem ,
I love to check that valve-lash from time to time .
 

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The Comp Cams XE274H is a hydraulic lifter flat tappet cam. It should work O.K. IF you have 92 octane (or better) fuel available.Cam should be easy on the valve train with .519/.523 lift. With lower octane, you can 1) reduce the compression or, 2) increase the duration a bit. Perhaps XE284H?? It depends on the combination, weight of car, gear ratio, type of useage.
As B4, Good luck.
 

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Discussion Starter · #5 ·
Here is my combo :
79´ 351 W
Homeported 302 heads
9.8 - 10.0 comp-ratio
RPM intake
600 Edel vac. sec. /Holley 750 (3310 vac.sec) available
1 5/8 flowtech longtube header ,selfmade X-pipe and full lengh 2 1/2 exhaust.
tranny : C4 with 3.00 rear-gears
tire-size 255/45-15

planed changes (maybe next winter):
twisted wedge heads 2.02 / 1.6
and portmatching the intake
 

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Torque converter choice makes a huge difference on how much cam you can run. What is your stall speed? How much vacuum do you need and is this car something that is going to be a daily driver, street/strip, or what?
 

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Discussion Starter · #7 ·
Oh, it´s for street-racing on weekends.
most time cruising and driving on autobahn


Now I drive a stock 289 converter in this setup.
 

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If you are wanting a solid cam that makes power from 1500 - 6000 and will work with a stock converter, you'll have to stay fairly conservative. Anything that's much bigger than the Comp Cams solid Magnum 270S requires a higher stall speed. I would think that the 270S cam would suit your needs quite well. The specs are: 224-224 .499-.499 110 l/s +4)
 
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