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Old 06-15-2010, 03:49 PM
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How does this combo sound?

My engine blew up again. so this is what i have planned for the next rebuild.

1980 4 Bolt Main 14010207 Block (SBC 350)
Flat Tops with 4 valve reliefs.
1998 Vortec heads with Comp Springs/Retainers/Locks
Edelbrock performer RPM Intake
Lunati Bracket Master 2 Cam/Lifter Kit (00010LK) 292/292, .480/.480, 109LSA
Barry Grant Speed Demon 650
Milidon High Volume Oil Pump
Comp Cams Double Roller Timing Chain

Thoughts? Engine is going into my 1994 Chevy RCSB which is a driver with racing on the weekends.

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Old 06-15-2010, 05:11 PM
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What is your exhaust system ? Transmission ? Torque converter ? Gearing ?

Do you haul things with the truck or do you ride around empty most of the time ? How much does it weigh ?
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Old 06-15-2010, 07:49 PM
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opps sorry.

Flowtech shorty headers
2 1/4 pipe
Flowmaster 40
dual out dumped.

4L60E trans with a 2400 Stall

3.42 open gears at the moment, but want yo upgrade to a Posi and different ratio.

empty 99.9% of the time.
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Old 06-17-2010, 05:58 PM
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Personally I would run a smaller cam. What kind of racing do you do now ? How fast is it ? What is currently in the truck ?
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Old 06-17-2010, 08:57 PM
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smaller cams seem to work better

The smaller edelbrock RPM cam might work better. The wide centerline helps the low end, keeping the powerband spread. Cam has the lift and duration to go plenty fast. Combined with rpm intake and Vortec heads, it should be a smash.

Most gearing advantage for the road is a OD trans 700r4/200r with 3.42 (with 26" tires adjust gearing advantage for tire height) gears . That OD driveline will be more multiplication than a TH400 with 4.10's full race gears.

Edelbrocks RPM package works really well. Few complaints after decades of abuse.
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Old 06-18-2010, 09:56 AM
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Quote:
Originally Posted by RustoRod
Personally I would run a smaller cam. What kind of racing do you do now ? How fast is it ? What is currently in the truck ?
Bracket drag racing, Never got a chance to race it my current engine only lasted 6 days.

Current was:

1994 TBI Short Block, Bone Stock
Comp XE268H
Comp Lifters
Comp Timing Chain
Milidon HV pump
Vortec Heads with Comp Springs/Retainers/Locks
Edelbrock RPM
Demon 650
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Old 06-20-2010, 11:20 PM
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I see this engine making around 360 hp and the truck weighing around 4,500 pounds with driver. With a 3.42 gear this will put you through the traps around 101 mph at abut 4,200 rpm.
I would think the 268 XE cam you had in the last build was pretty good but there are other options.
Howards # 110991 220/220 @.050 .470 lift on 108lsa
Comp Cam # 12-316-4 222/222 @ .050 .464 lift on 108lsa
Isky 270 Mega cam 221/221 @.050 .465 lift on 108 lsa

The tighter lsa will help the torque and the duration will keep the powerband down where the truck needs it. Why the change from the XE 268 ?
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Old 06-20-2010, 11:29 PM
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Those shorty headers are not helping the mid and upper power range- you should seriously consider long tube headers along w/an "X" or "H" connector between the two sides, after the collectors and before the mufflers.
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Old 06-21-2010, 11:25 AM
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Quote:
Originally Posted by RustoRod
I see this engine making around 360 hp and the truck weighing around 4,500 pounds with driver. With a 3.42 gear this will put you through the traps around 101 mph at abut 4,200 rpm.
I would think the 268 XE cam you had in the last build was pretty good but there are other options.
Howards # 110991 220/220 @.050 .470 lift on 108lsa
Comp Cam # 12-316-4 222/222 @ .050 .464 lift on 108lsa
Isky 270 Mega cam 221/221 @.050 .465 lift on 108 lsa

The tighter lsa will help the torque and the duration will keep the powerband down where the truck needs it. Why the change from the XE 268 ?
I wasnt very impressed with the quality of my comp cams Lifters. they actualley fell apart and blew my engine, all of the little retainer clips that hold them together snapped.
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Old 06-21-2010, 11:27 AM
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Quote:
Originally Posted by cobalt327
Those shorty headers are not helping the mid and upper power range- you should seriously consider long tube headers along w/an "X" or "H" connector between the two sides, after the collectors and before the mufflers.
i would love to run longtubes, but my truck is lowered 5" in front and our street are horrible, the long tubes would just get beat up, Also im not running duals on this truck, its a Single in, Dual out flowmaster 40.
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Old 06-21-2010, 12:30 PM
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Quote:
Originally Posted by FastOrange
I wasnt very impressed with the quality of my comp cams Lifters. they actualley fell apart and blew my engine, all of the little retainer clips that hold them together snapped.
This is not the fault of the lifter, it is the fault of whoever adjusted the lifters or the driver, they ran them without enough preload which leaves the pushrod cup banging against the clip, or the engine was run in valve float. It will happen with any hydro lifter run under the same conditions, regardless of who makes it.
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Old 06-21-2010, 06:48 PM
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Quote:
Originally Posted by ericnova72
This is not the fault of the lifter, it is the fault of whoever adjusted the lifters or the driver, they ran them without enough preload which leaves the pushrod cup banging against the clip, or the engine was run in valve float. It will happen with any hydro lifter run under the same conditions, regardless of who makes it.
i will make sure to adjust them proper this time (Get someone with experience todo it )

ordered some parts today, ended up getting a Comp Thumper cam, Got a good deal on it.

Also bought a MSD Street Fire Distributor, I have heard that they were the same as my old ProComp one, but honestly, i can see that they are different.
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Old 06-22-2010, 02:39 AM
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Quote:
Originally Posted by FastOrange
ended up getting a Comp Thumper cam, Got a good deal on it.
Hope you got a reeeaaal good deal on it.
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Old 06-22-2010, 01:36 PM
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Quote:
Originally Posted by techinspector1
Hope you got a reeeaaal good deal on it.
whats wrong with them?
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