budget build cam choice
#1
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Car: 87 formula/69 beetle
Engine: 355/2.1
Transmission: T.C.I streetfighter th350/5 speed
Axle/Gears: 3.73 lsd/
budget build cam choice
i have a 72 "010" casting 350 i want to do a build but i dont have the cash to do the bottom end aside from reconditioning. on top is what i already have to put on.
procomp 210 runner 64cc aluminum heads
dominator manifold
1.5 rollers
a 650 double pumper
i have headers
gear drive
i was wondering if id be pushing it putting an xe268h in its what i have n my daily driver but that had flat top pistons. if the xe is too big for this build what shoudl i step down to
procomp 210 runner 64cc aluminum heads
dominator manifold
1.5 rollers
a 650 double pumper
i have headers
gear drive
i was wondering if id be pushing it putting an xe268h in its what i have n my daily driver but that had flat top pistons. if the xe is too big for this build what shoudl i step down to
#2
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Car: 82 Sport coupe
Engine: 355 semi roller
Transmission: TH-350 B&M ratchet shifter
Axle/Gears: 3.73 Eaton Posi
Re: budget build cam choice
either go for that cam or summits SUM-K1104 cam. I've run both and both match your stall and component combo.
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Car: 87 formula/69 beetle
Engine: 355/2.1
Transmission: T.C.I streetfighter th350/5 speed
Axle/Gears: 3.73 lsd/
Re: budget build cam choice
well i forgot to mention its going into a street rod backed by a t-5 so stall isnt a matter
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Car: 87 formula/69 beetle
Engine: 355/2.1
Transmission: T.C.I streetfighter th350/5 speed
Axle/Gears: 3.73 lsd/
Re: budget build cam choice
even with the 1.5 rockers?
#7
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Car: 87 formula/69 beetle
Engine: 355/2.1
Transmission: T.C.I streetfighter th350/5 speed
Axle/Gears: 3.73 lsd/
Re: budget build cam choice
hmm well this is making me want to change out the cam in my bird too. what should i go to id like to stay with comp i can get them for less than others
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: budget build cam choice
What are you trying to accomplish with the engine? Why those enormous heads?
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Re: budget build cam choice
and does your 350 have flattops or dished pistons? flattops means you're around 10.2:1. In which case, I'd say an XE274 and a 4-something axle ratio.
#10
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Car: 87 formula/69 beetle
Engine: 355/2.1
Transmission: T.C.I streetfighter th350/5 speed
Axle/Gears: 3.73 lsd/
Re: budget build cam choice
the engine im building is going into a 32 chevy coup. its got 3.55 posi from an old 70's camaro although the 3.55s were thrown in after. i want the car to hit into the 13's but for teh most part its going to become my new daily driver whle i stroke and charge my firebird. the heads are going on it cuz i already have them laying around from an old build that went stray. the block has stock dished pistons 4 valve reliefs
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Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: budget build cam choice
210cc heads on a light vehicle like that are going to be WEIRD. Daily driver is not the first thought to pop into my head!
Shrink the heads, or make it your drag car. It'll be very lame at the bottom end. Cam the crap out of it to make it work. I'd look at an xs282 or whatever the 280ish solid flat cam is.
Shrink the heads, or make it your drag car. It'll be very lame at the bottom end. Cam the crap out of it to make it work. I'd look at an xs282 or whatever the 280ish solid flat cam is.
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Car: 87 formula/69 beetle
Engine: 355/2.1
Transmission: T.C.I streetfighter th350/5 speed
Axle/Gears: 3.73 lsd/
Re: budget build cam choice
what about the thumpr series cams?
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Car: 87 formula/69 beetle
Engine: 355/2.1
Transmission: T.C.I streetfighter th350/5 speed
Axle/Gears: 3.73 lsd/
Re: budget build cam choice
hmm no i think ill pass there then lol.. what about a magnum cam from comp ive heard good things about them
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Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: budget build cam choice
they're ok. They're a straight pattern cam though. They work pretty good with aftermarket heads with good exhaust ports. So it would work ok for you.
Remember, a low RPM cam would be a mismatch, so you need to CAM IT UP.
I'd highly recommend a solid roller.
Why do you use a gear drive by the way?
Remember, a low RPM cam would be a mismatch, so you need to CAM IT UP.
I'd highly recommend a solid roller.
Why do you use a gear drive by the way?
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Car: 87 formula/69 beetle
Engine: 355/2.1
Transmission: T.C.I streetfighter th350/5 speed
Axle/Gears: 3.73 lsd/
Re: budget build cam choice
same as the heads. its an unused gear drive that is just collecting dust so i may as well throw it n. i dont care if its whiny or not.
#17
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Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: budget build cam choice
i'd be more concerned with spark scatter...
I'd leave the gear drive on the shelf, or sell it... just get a summit/cloyes/whatever double roller chain for $40
I'd leave the gear drive on the shelf, or sell it... just get a summit/cloyes/whatever double roller chain for $40
#18
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Car: 87 formula/69 beetle
Engine: 355/2.1
Transmission: T.C.I streetfighter th350/5 speed
Axle/Gears: 3.73 lsd/
Re: budget build cam choice
never heard of spark scatter fill me in?
#19
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Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: budget build cam choice
There's no cushion with a gear drive, to chain to take up the slack, the vibration. It will shake the distributor (it's driven by the cam, which is now rigidly coupled to the crank, which takes all kinds of abuse..) and can cause spark scatter. poor spark at high RPM.
Gear drives are like dual carbs these days. More flash (and sound), less usefulness.
Gear drives are like dual carbs these days. More flash (and sound), less usefulness.
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Car: 87 formula/69 beetle
Engine: 355/2.1
Transmission: T.C.I streetfighter th350/5 speed
Axle/Gears: 3.73 lsd/
Re: budget build cam choice
that makes complete sense. ill go with a double roller then. but this may be off subject but how worthy are belt drives then?
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Car: 1984 Z28 Hardtop
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Axle/Gears: 3.54 Dana 44
Re: budget build cam choice
Spark scatter isn't poor high-RPM spark, it's variability in timing due to slack in the distributor train. It's not a problem particular to gear drives, it happens with chain drives as well.
Belt drives are just way too expensive.
Belt drives are just way too expensive.
#22
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Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: budget build cam choice
What's the problem with gear drives then, aside from noise? Am I using the wrong terminology? I thought it can cause distributor problems, due to excess torsional vibration?
#23
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Re: budget build cam choice
Noise is the biggest thing. Some people talk about valvetrain harmonics with gear drives, but chain setups have valvetrain harmonics too, just different ones.
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Car: 87 formula/69 beetle
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Transmission: T.C.I streetfighter th350/5 speed
Axle/Gears: 3.73 lsd/
Re: budget build cam choice
well my main question is, would it kill me to use the gear drive. id much rather spend the 40 bucks on a decent coil than on another timing drive if i dont have to
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