87fbodyy

whats the best cam thatll really wake up my 305 tpi without having to do mods to my head? i race it alot n im lookin fr the best cam, thanks.

c4ta

i have read the crane 2032 is the best for a 305 hands down for no other mods.


wait is 87' a roller motor?

305sbc

iTrader: (3)

You can run the LPE216 cam ( info in my sig ) if you swap retainers to allow for more lift clearance and upgrade your springs a bit.
Spring & retainer swaps can be done without removing the heads.
The Vortec V6 spring retainers would give you enough clearance.

ninetyone

iTrader: (2)

what do you mean by you race it a lot? where at the dragstrip? Is this also a street car? Biggest i would go would be the Crane 2032 (214/220 duration@.50)

Carlos773

iTrader: (3)

Without mods to the heads? Nothing. Anything bigger you will have to atleast refresh the springs or upgrade them. After that you are looking into tuning issues.

Spend some time researching around.

87fbodyy

mainly race on the street, take it to the local strip every once ina while .what do yous think about this? http://www.summitracing.com/parts/CCA-K08-409-8/

ninetyone

iTrader: (2)

I think the LSA is a little low. Normally computer controlled vehicles run around 114 LSA,but 112 is fine too. That cam is very close to the stock L98/305 HO cam. Too small and not worth it. Also your factory cam is more than likely already a roller cam. Why would you step backwards and put a flat tappet in there? If your engine is a "roller" engine like i suspect then you can even re-use your stock roller lifters and just change the cam itself.

ninetyone

iTrader: (2)

or does your car have the "peanut cam" in it? IMO,any of the compucams or Crane computer cams will work just fine.

GM Stock Cams
Model Number .05" Duration 1.5:1 Lift 1.6:1 Lift Lobe Sep. Notes
14093643 202/207 .404/.415 .431/.443 114.5 87 350,305man
10088155 179/194 .350/.384 .373/.410 109deg 87 305 auto
10066049 207/213 .415/.430 .443/.459 117deg 88-89 350,305
10111773 202/207 .413/.428 .441/.457 114.5 90-92 350,305

looks like you have the peanut cam. Notice the small duration. Also remember that you really dont wanna go too big with your new cam either. Keep duration below 220/220 and lift under .470/.470 with LSA of at least 112 or wider (higher). On an otherwise stock Tpi car i would go like 210/216 @.50

305sbc

iTrader: (3)

$820 wow! you shouldn't need all of that.
Almost all 87s came with roller cam (officially all of the TPI engines did come with roller).

You need a roller cam, some mild upgrade springs, retainers, and you can pick up a good true-roller timing set at your local parts house for around $35.
The cam I suggested is designed specifically for what you have, and so is computer friendly. I would put new seals on during the spring swap.

87fbodyy

ok, ill be straight up, i don't kno too much about cams as you can see lol

ninetyone

iTrader: (2)

What gears do you have? 2.73?

87fbodyy

3.42

ninetyone

iTrader: (2)

cool,then someone put those in. Have u already done any exhaust upgrades?

305sbc

iTrader: (3)

You would be very well off to have a reputable shop perform the install for you.
There are several specialty tools required to do all the proper checks and measurements.

If you're going DIY on this, then you should stick to a smaller cam, that will install with NO other modifications ( like the one you found at Summit).

Otherwise:
If you want to push it on the camshaft to seek more power, then your best bet is to go ahead and pull the heads and have the proper machine work done for clearance.
All those stock head casting out there have little differences that can be measured. They are not all identical as one would think, and so sometimes issues pop up with one install that did not with another. Things like pushrod interference with the cylinder head can catch you off guard.
It is much easier to do modifications and the required measuring with the heads off of the engine.
Heads off the engine is a perfect time to do some porting that will show power gain throughout the whole RPM range.

__________

You asked about cams with no other modifications, and that camshaft from Summit that you posted the link to should fit that description for you.

I added the other suggestions because you said that you race a lot, so I added options for more power.

87fbodyy

Yea, summit shorty header, magnaflows n gutted cat

thanks man, ill look into the cam you first suggested

darbysan

A stock LT1 / LT4 cam works pretty well, is computer friendly, and can be found used for a really good price. It comes close to maxing out the lift for the stock heads, has good duration, and the LSA is computer friendly. I'm very happy with the performance I get with mine.

Here's one on Ebay now- there are others there as well
http://cgi.ebay.com/ws/eBayISAPI.dll...#ht_500wt_1202

305sbc

iTrader: (3)

^ This is correct. It's also much cheaper than the LPE cam.

A very slight modification will probably have to be done to the cam-gear drive pin on the front of the camshaft so it doesn't scrape the timing cover.
It's easy to do.