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YACT: Camming...

Toastedlightly

Toastedlightly

Diamond Member
So, this is a question from a complete noob! What is the maximum amount of lift possible on a 1977 Chevy 350 w/ stock heads springs and whatnot? Anybody know? Random question, but should make for some fun times.

EDIT: Here are the parts I may be getting for 500 bucks: (****** formatting, but you get the gist)


ACC-0576 Spark Plug, U-Groove, Tapered Seat, 14mm Thread, .460 in. Reach, Projected Tip, Resistor, Each $1.95 8 $15.60

ACC-4048 Spark Plug Wires, Super Stock, RFI Suppression, 8mm, Yellow, Stock Boots, GM, V8, Set $29.88 1 $29.88

BIG-11100FLT Headers, Full-Length, Steel, Painted, Chevy, Car, Small Block, Pair $96.95 1 $96.95

CCA-2100 Timing Chain, Magnum Double Roller, Steel Sprockets, Chevy, Small Block V8/V6, Set $32.95 1 $32.95

EDL-2101 Intake Manifold, Performer, Dual Plane, Aluminum, Natural, Square/Spread Bore Flange, Chevy, Small Block, Each $114.88 1 $114.88

EDL-2102 Cam and Lifters, Hydraulic Flat Tappet, Advertised Duration 278/288, Lift .420/.442, Chevy, Small Block, Kit $117.88 1 $117.88

FEL-MS90314-2 Intake Gaskets, Stock Port, Chevy, Small Block, Set $15.69 1 $15.69

MRG-93 Gaskets, Timing Cover, Chevy, Small Block/90 Degree V6, Kit $7.50 1 $7.50

PRO-66945RC HEI Distributor Upgrade Kit, Coil, Cap, Rotor, Module, GM, Kit $66.88 1 $66.88
 
Originally posted by: Crucial
yeah, this is the LAST place I would ask for advice on performance mods on a small block chevy.
Click to expand...

But there are some knowledgeable peoples here......
 
Originally posted by: DaTT
Originally posted by: Crucial
yeah, this is the LAST place I would ask for advice on performance mods on a small block chevy.
Click to expand...

But there are some knowledgeable peoples here......
Click to expand...

And 143,585 people who think they are but will give you "advice" anyway.
 
You could go a little bigger than that cam, but I wouldn't venture past the 300 thou mark without new springs and rockers. However, take my advise with a grain of salt as I'm mostly a Ford man 🙂 Why are you going for a double row timing chain on such a low budget motor? Seems like a waste of money, but I suppose it's only $30-odd for some extra insurance. Is you current timing cover naffed? HEI distributors are cool but they take up an aweful lot of spce. Not so much an issue for a chevy motor. I bought an HEI dizzy for my Falcon (brand new, converted for a Cleveland V8) and it is damn cool but it's massive - I had to use a spacer under my carb so my air filter could fit, and then my bonnet wouldn't close!
 
Still a smog motor, with small valve heads.

And the only parts there that actually help performance are the cam, intake and headers. But again, you're dealing with a low compression motor with lousy heads.

I'm more of a Mopar guy myself, I've found that the Performer intake actually hurt performance (on Mopar engines). Had much better results with a Performer RPM.

What kind of carb?



 
Originally posted by: iamaelephant
You could go a little bigger than that cam, but I wouldn't venture past the 300 thou mark without new springs and rockers. However, take my advise with a grain of salt as I'm mostly a Ford man 🙂 Why are you going for a double row timing chain on such a low budget motor? Seems like a waste of money, but I suppose it's only $30-odd for some extra insurance. Is you current timing cover naffed? HEI distributors are cool but they take up an aweful lot of spce. Not so much an issue for a chevy motor. I bought an HEI dizzy for my Falcon (brand new, converted for a Cleveland V8) and it is damn cool but it's massive - I had to use a spacer under my carb so my air filter could fit, and then my bonnet wouldn't close!
Click to expand...

An english man.

 
Originally posted by: iamaelephant
I had to use a spacer under my carb so my air filter could fit, and then my bonnet wouldn't close!
Click to expand...

BTW, K&N makes a 14" round air filter that has like a 2" drop on it. That's what I used on my 64 Dodge.



Here.
 
If that engine is original, I wouldn't do a cam swap. I would do a complete rebuild. I definately wouldn't run a new cam on 30 year old springs.

I did put a cam with similar specs in a 305 and I was very happy with the results.
 
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