Ive gotten a pretty big cam that is in my TPI(all edelbrock, SLP, 52mm, ) with AFR 195's and was wondering if my cam is too big. I also have 3.73 and getting a Vigelante 2800 stall. Engine is still on engine stand

Thank You

Chris

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1986 305 TPI
8.0 @88 in the 1/8
**Soon to be 355

 

Um .... we need to now all the spec's on the cam to let you know if it will be to be or not, or are you just looking for suggestions?

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1989 Trans Am GTA

 

Oh yea. Hooker long tubes also. I am looking for it now. It is a comp cam grind 08-306-8. Duration is advertised 290/307 @.050 it is 230/244(that is high isn't it), lift is 510/540 and lobe seperation is 112. I also have 1.6 rr. All help is appreciated

Thanks

Chris

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1986 305 TPI
8.0 @88 in the 1/8
**Soon to be 355

 

Oh yea. RPM range is said to be 2000-6000. That is about what I want, but sounds big to me(always happens AFTER I get something in the motor)

 

Thats a fairly stout cam. You will have to crank your idle up most likely. What sort of compression are you running?

The cam is for higher RPM operation but your TPI parts aren't well-suited for that. If you have siamesed runners, or do the siamese grinding to your base you'll likely have a more compatible combination of parts.

The cam you've got looks like it's better suited to a miniram.

 

That is the CC306 cam. It is way too big for a TPI (even a fully ported Semi-S LTR TPI). That cam is a MiniRam cam.

Tim

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TRAXION's 1990 IROC-Z
Best Time = 12.244 @ 112.51mph (1.778 60' / 7.819@88.32mph in the 1/8)
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels.
Gunning for NA 11's with bigger cam, bigger stall, and bigger exhaust.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

 

That 306 cam is really stout for a TPI, most LT-1's with headers, gears and GTP heads, make 380-410 RWHP with that cam, you will REALLY have to do your homework for it to work with a TPI. Like mentioned, you will DEFINITELY NEED at a minimum, some ASM runners, EDELBROCK, or ACCELL base, lots of PROM TUNING. This cam would be more suited for the MINI-RAM, since the LT-1 guys are making power at 6600 RPM's with it. HTH's

Sorry Tim , I was typing at the same time as you were.

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88 Monte SS 355 TPI/LT-4 HOT CAM/Fully ported 1990 Corvette L-98 heads/AFR Hydra-rev/ T-56 6-Speed/ PRO-5.0 shifter/ 1-3/4" full length headers/3" X-PIPE assembly/ 8.5" G-80 rear with 3.73 gears.
http://community.webshots.com/user/ssynergy
www.y-t-g.com/88monte

[This message has been edited by 88SS6SPEED (edited October 22, 2001).]

 

Ok. Heres the deal. I like the stock looking TPI. I have a ported Edelbrock base,ported SLP runners, ported and siamesed plenum, and 52mm tb, but somehow the cam got mixed up. I was susposed to be running the cam Traxion used to be running, but that got changed somehow. The engine builder put in the 206 cam, that we had talked about earlier, but I decided against because I thought it would be too big. Also I did not get the spring upgrade and I know I would need to upgrade with the bigger cam correct? One more question. I have a AFR hydra-rev also and was told that some people have been eating up lifters due to this. Has anyone else heard or or had this problem. He also said that spring technology has come so far that you no longer need them. I am really confused now. Someone/anyone please help!!!


Thanks

Chris

 

Chris,

You stated that your engine builder put in the CC306 cam ... but, you realize the mistake and you are deciding to go with a smaller cam? Did you already do a cam swap and install a smaller cam yet? My original cam was a CC Xtreme Energy 218/224 112LSA grind. Did you put that one in or did you decide to go with another one?

The CC306 is definitely a big cam and needs a very high flowing intake as well as REALLY good heads.

Tim

------------------
TRAXION's 1990 IROC-Z
Best Time = 12.244 @ 112.51mph (1.778 60' / 7.819@88.32mph in the 1/8)
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels.
Gunning for NA 11's with bigger cam, bigger stall, and bigger exhaust.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

 

Hey 88SS6SPEED, Killer Monte...I love it. Brings back such sweet memories of my emissions-exempt 406 84SS!! Man do I miss her!

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'91 Z28 1LE; 355, Sportsman II heads, Edelbrock TPI w/ 58mm TB, Tremec TKO 5-speed, 3.73's & much, much more

[This message has been edited by Ed1LE (edited October 25, 2001).]

 

Yes. As of right now, the CC306 cam is still in the engine, but I want to change it to the cam you were running. What makes it worse is that the engine is already on the engine dyno, but I think this is the builders mistake. What to do? Is your old cam what you would recommend? He says I could just change the rocker arms to 1.5's which would be good on lift, but what about the 230/244 duration? Can someone explain what the duration means? I know what it is technically, but why does it mean so much on a TPI car. The AFR 195's flow relitevily well, correct? Again, Thanks everyone for your help.

Chris

355/someday

 

anyone know??

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1986 305 TPI
8.0 @88 in the 1/8
**Soon to be 355

 

Duration affects where the engine makes its power, a cam like that in a 350 is going to make most of its power from 3500-6500 (or more), whereas a TPI likes 2000-5000.

Spring technology... thats a good one. A certain amount of spring pressure is needed to keep the lifters from flying off the cam at high RPM's, and to put the valves back on the seat as well. The problem has always been that the springs in hydraulic lifters can only handle so much valve spring pressure before they give up, which is why so many racers run solids. Rev kits are nothing new, they have been around longer than I have. The purpose is to move the spring pressure thats used to keep the lifter on the cam to the lifter itself, which takes some pressure off the spring inside the lifter. If its all matched properly, it wont add any more pressure at the cam than is already there with just valvesprings. I wouldnt worry about the rev kit.

 

Thank You. I guess I need to get the engine builder to take that cam out before anything bad happens(ie no low end horsepower) Is there any other cam you would recomend for my setup besides the 218/224 497''/503'' on a 112?

Thanks

Chris(I hate my car/I love my car)

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1986 305 TPI
8.0 @88 in the 1/8
**Soon to be 355

 

I'd look at the LPE 211/219 or one of SLP's cams.

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89 IROC-SuperRammed 355 w/ AFR 190's and LPE 219/219 cam-http://www.geocities.com/buckeyeroc

 

The cam that I picked for my 355 TPI would be the biggest one I would recommend for a TPI setup. SLP cam - .502/.510 lift 224/232 duration @.50 , which is 280/288 duration @seat to seat. With 1.6 rockers, it brings the lift to .536/.544. The cam works well with minimal tuning! However, I do not recommend using it with stock heads. It is good for 30hp at the crank in a stock application, but you wouldnt be reaping all the benefits this awesome cam gives without having some decent heads.

 

Ibad91Z. What is the rest of your setup? Any track times or dyno sheets? My cam that is in my car is not much bigger than that. what is a good rpm range for your car?

Thanks



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1986 305 TPI
8.0 @88 in the 1/8
**Soon to be 355

 

Any other cams?? 1bad91Z. Have any track time or dyno sheets?

Thanks

Chris

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1986 305 TPI
8.0 @88 in the 1/8
**Soon to be 355

 

If you want times or cam opinions, just do a search on this board under my name for posts. Those were pretty much the only posts I had for about a month there.

 

The LT4 Hot Cam is a decent choice. I might be biased on this since I run it right now, but it was a budget issue and it can be had for under $200. It is just a bit 'smaller' than that SLP cam that was mentioned before.

The specs are: 218*I 228*E @ .050" , 279*I 287*E advertised duration, .525"I/.525"E with 1.6:1 rockers, .492"/.492" lift with 1.5:1 rockers, and a 112* lobe seperation (GM part number: 24502586). The dowel pin will need to be recessed into the cam a bit, but otherwise it is a direct bolt in for a roller cammed small block chevy.

I am using this cam with a good set of heads but some pretty crappy headers, ported plenum and ported SLP runners, and only a ported stock base but still am in the low 13 second zone (haven't gotten $hit for traction ever and ran a few 13.4s and 13.3s on a Gtech...).

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1987 GTA L98 MD8
355, TFS Heads, LT4 Hot Cam
My GTA

The Minnesota F-body Club

 

I agree with Matt, the LT4 HOT Cam would be an ideal choice for your car. I'm going to get a set of SLP runners and some Trick Flow heads and it all should work great with that setup which is very similar to yours.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End with 2.77:1 Gears.

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, Accel High Flow TPI Baseplate, Edelbrock TES 1 5/8" Headers, Catco 3" High-Flow Catalytic Converter, Hooker 3" Aerochamber Cat-Back System, Transgo Shift Kit, Performance Resource Chip, Accel Ignition, K&N Filters, Jet TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET: 14.32 @ 97.7mph
(corrected for elevation)