Buying a cam..help me decide
#1397704
03/05/13 03:17 PM
03/05/13 03:17 PM
|
Joined: Mar 2009
Posts: 126
kentucky
kyhemi-dart
OP
member
|
OP
member
Joined: Mar 2009
Posts: 126
kentucky
|
About to buy a can for my 340.
Motor is .30 over
Ported J-heads
Holley Strip Dom w/750
904 with 4500 conv
5.00 + gears
All going in a 3100 or so back halfed Dart. This motor is just filling the void until our hemi is done. Have my choices narrowed down to two.
MP 296 .557 cam or Comp Cams 290/304 .558/558. Anyone have expirience with the Comp Cam? I believe the .557 is 252 @ .50 and the Comp is 260/266 @ .50
Last edited by kyhemi-dart; 03/05/13 03:48 PM.
|
|
|
Re: Buying a cam..help me decide
[Re: kyhemi-dart]
#1397706
03/05/13 06:22 PM
03/05/13 06:22 PM
|
Joined: Dec 2009
Posts: 20,667
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
|
Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,667
in a cattle trailer down by th...
|
You will need to wind that thing. Go big or go home, but since it's just a temporary engine, well, it may not perform all that well anyway. Those are some steep gears for those heads so with the smaller cams it will probably run out of breath by the 1000 foot mark.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
|
|
|
Re: Buying a cam..help me decide
[Re: kyhemi-dart]
#1397709
03/05/13 07:10 PM
03/05/13 07:10 PM
|
Joined: Dec 2009
Posts: 20,667
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
|
Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,667
in a cattle trailer down by th...
|
Quote:
Itll have a 14.5w x 32 slick so the gear wont hurt it as bad as a small tire car
It will still need at least 7000 RPM.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
|
|
|
Re: Buying a cam..help me decide
[Re: kyhemi-dart]
#1397710
03/05/13 07:13 PM
03/05/13 07:13 PM
|
Joined: Feb 2009
Posts: 1,532
off the grid
340B5
pro stock
|
pro stock
Joined: Feb 2009
Posts: 1,532
off the grid
|
As long as the comp ratio is 10:1 or more, I would highly recomend a Racer Brown ST-21 or STH-42. Same cam; one hyd and other solid. Your combo should run 11.70 to 11.90 with either.
Yeah, it's got a smallblock.
|
|
|
Re: Buying a cam..help me decide
[Re: kyhemi-dart]
#1397711
03/05/13 07:17 PM
03/05/13 07:17 PM
|
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581
master
|
master
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
|
I'd use the Mopar cam. We've been using the Mopar cams since 1972 and have had ZERO problems. The payout window doesn't know what cam the engine has in it. 
Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
|
|
|
|
|
I don't like any of the Mopar brand cams I used in the last thirty years, they are cheap and you get what you pay for usually, esepcially on camshafts 
I sold a 1970 Duster 340 4 speed car to a guy who became a good freind of mine later, he ended up using 5.57 gears with a 3.09 first gear with a 13x31 tire(it had a lot of other rear gears and tire sizes on it before that) 
