Cam selection

[Buck89RS]

What i have is a 2.8L block bored 30 over, crank turned 10 , stock heads, stock exhaust, and stock fuel injection. And this is the cam i want to get http://store.summitracing.com/defaul...-233-4&x=0&y=0
Stock cam is 282/290 .395/.410 lobe center = 109 New cam is 260/260 .440/.440 lobe center is 110.
What i want to know is this cam worth the money or should i stay stock with my old cam? And it has to pass emissions. I am going to order it today, so i would like someone else's suggestion. Thanks

-Buck

[bszopi]

Comp Cams 260 grind is a good grind, and several people on the board are either using it or have experience with it. You will have no problems with emissions with that cam. Most people will probably tell you to bump up to the 272 grind for better performance.

Where did you get those stock specs from, btw? Cause they don't look right...

[Buck89RS]

I got them off the internet somewhere. Anyway how about the compucam 2020 or 2030 emissions test. How do i know if i will pass? And where can i find the 272 grind? I am using stock rocker arms and valve covers.

http://store.summitracing.com/default.asp?target=esearch.asp&N=110&Ntk=KeywordSearch&Ntt=compucam+2020

[Buck89RS]

I am after more torque than top end, so i think this cam should do the trick:

http://www.compcams.com/Technical/Search/CamDetails.asp?PartNumber=16-232-4

What is yall's suggestion? I want a stoplight to stoplight car, but a daily driver. 0-4800 RPM

[bszopi]

The 2020 is basically a stock cam. The 2030 is a very mild grind. Here is the link to the 272:

http://store.summitracing.com/partdetail.asp?part=CCA-70-127-5&Ntt=comp+272&Ntk=KeywordSearch&N=110&PartSearchFlag=

[Buck89RS]

That link is for a Ford 4cyl motor. What did you think about the Comp Cam in SummitRacing----> Part # CCA-16-232-4 as far as torque goes? It is a 252/252 - 206/206 - .425/.425 - 110

[bszopi]

Well, wtf... Its around there somewhere. Do a search on the forum for either the 260 or 272 and you'll find probably all the info you would ever need. They both have been discussed here so many times already.

[v6h.o.]

the Camshaft Brad is refering to is the Crane Cams 272.

Part Number: 253941 Grind Number: H-272-2 (REPLACES HMV-272-2)
Engine Identification:
Start Yr. End Yr. Make Cyl Description
1980 1996 CHEVROLET 6 GOOD IDLE, DAILY USAGE AND OFF ROAD, TOWING, PERFORMANCE AND FUEL EFFICIENCY, INCREASED COMPRESSION RATIO AND GEARING ADVISED, 2600-3000 CRUISE RPM, 8.75 TO 10.5 COMPRESSION RATIO ADVISED. BASIC RPM 2000-5000
Engine Size Configuration
2.8-3.1 L V

Valve Setting: Intake .000 Exhaust .000 HOT

Lift: Intake @Cam 3027 @Valve 454 All Lifts are based
on zero lash and theoretical rocker arm ratios.
Exhaust @ Cam 3200 @Valve 480
Rocker Arm Ratio 1.5

Cam Timing: TAPPET @.004
Lift: Opens Closes ADV Duration
Intake 25 BTDC 67 ABDC 272 °
Exhaust 75 BBDC 29 ATDC 284 °

Spring Requirements: Triple Dual Outer Inner
Part Number 99848
Loads Closed 105 LBS @ 1.700 or 1 45/64
Open 280 LBS @ 1.240
Recommended RPM range with matching components
Minimum RPM 2000
Maximum RPM 5000
Valve Float 6500

Cam Timing: TAPPET @.050
Lift: Opens Closes Max Lift Duration
Intake 1 BTDC 35 ABDC 107 216 °
Exhaust 51 BBDC (3) BTDC 117 228 °




I myself have the COMP cams 16-233-4 camshaft, the 260/260 degree duration .440 lift camshaft.

i used to run the 16-232-4 cam a few years back -256/256 .423 lift cam.. but kicked myself over not going wiht the larger 16-233-4.,


its odd every time i see a post on this site about cams everyone refers to the comp 16-233-4 as the 260, when actually the camshaft that is called the 260 is from crane. "253901 H-260-2 (REPLACES HMV-260-2) "

the majority of guys run the CRANE cam H-260-2 camshaft. or they go all out for the H-272-2.

however i like the 16-233-4 from Comp. great mid/top end.

the 2020/2030 cams are too close to stock to notice much power increase or worth putting in.

the cam companies might recommend them. but none of us would.

[bszopi]

Thanks for clearing that up Colin. Never even though about the whole Crane/Comp thing...

[EspanolaGuitarista]

Are any of those cams for a 3100? I know. NO!

[Classick Century Custom]

How big of a cam can I run with a streetable N/A setup 30 over and strip heads?...., please specify which wot cam or a lift spec...

[SappySE107]

Hello 2004

[pocket-rocket]

This might be from 2004, but I have to hand it to him. Hardly anyone uses the search button anymore.

[Classick Century Custom]

I apologise for the numerous questions on stuff thats probly very entry level for most of you but I'm still learning about these 3100 motors. I am just trying to avoid buying parts I won't need and spend the money where it will do the most good and give me the best performance.

[ForcedFirebird]

Crane is no longer selling cams, but I know someone who is :P

272+ is excellent in the iron heads and keeps the lift reasonable.