britered86transam

ok would this cam fit into a stock 305 TPI

Adv. Duration: 272º/284º
Gross Lift: .454''/.480''
RPM Range: 1500-5800

[This message has been edited by britered86transam (edited November 22, 2001).]

PaveTim

The lift is ok, but the duration is kind of big for a 305. With this cam you better have really good heads, manifold, and exhaust system. What have you done to the engine?

britered86transam

nothing yet, gm performance exhaust. headman headers in the mail and flowmaster muffler in 2 weeks.
how about this one:

Low & mid range torque & HP for 305 & 350 w/optional gearing.
Adv. Duration: 254º/264º
Gross Lift: .401''/.423''
Series: 2020

or

Adv. Duration: 266º/272º
Gross Lift: .440''/.454''
RPM Range: 2000-5000

or

Adv. Duration: 260º/272º
Gross Lift: .427''/.454''
RPM Range: 1200-5500

also i was told that a 268 grind would be too much for my 305 and would slow it down, is this true?

sorry for asking to muchm, but i am not very knowledgable when it comes to cams



[This message has been edited by britered86transam (edited November 22, 2001).]

five7kid

iTrader: (14)

That's the cam I picked, but notice what I did around it.

It runs great for me. But, with TPI, you're going to have to get larger shorter runners and port the plenum and intake to get it up into the cam's power range. Better valve springs than stock a must, screw-in rocker studs highly recommended, ported heads and larger intake valves as well. If auto tranny, higher stall torque converter.

I wouldn't recommend your first alternative cam (not much of an improvement), the last one might be okay, though. You'll still need to "fix" your TPI to get it up into the cam's range.

------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4, 2300 stall TC. Ported World 305 heads, Crane PowerMax 2050 cam. ZZ3/4 intake, oil pump, pan & baffle. Accel HEI SuperCoil & module. Hooker 2055 headers, 3" Catco cat & 3" catback w/dual-opposite Flowmaster 80. 2.93 limited slip. Spohn SFCs waiting to be installed. AMSOIL syn lubes bumper-to-bumper. Daily year-round driver. Best ET, speed TBD...
57 Bel Air, my 1st car. '66 396, 9.7:1 forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 700 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).

zippy

my choice of the cams you have listed is the .427 .454 cam. my choice for your application would be comp cams xtreme with .432 and .453 lift and 206 and 214 duration at .050. i have also ran the .440 lift cam dynamics cam in an 86 LB9 and it worked great, but always is room for improvement.