Too Stall or not???
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From: Clarksville,Tn
Too Stall or not???
I was wondering if any one seem to have a problem with installing a 268 Comp Cam into a 75 302cid truck engine, I've had one rebuilt with bore 60 over, 9.5 to 1 flat top piston's, 650 cfm duel feed 4 barrel carb; Holley Dist, & headers; as well as a Pro street intake; this is all attach to a 75 C-6 trans;The question is do I need a 2000 plus Stall convertor; I was told that a 268 cam reguardless of what its installed in or all the other ascessories mean nothing and the engine trans combo should work find, Was told until you go 270 cam duration that's when a Stall convertor in nesscessary?
Mitch
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From: shepherd
you should be able to use that cam with just a set of 3.55 gears and no stall probably. i have no experience with it but just call your machinist or the cam company and tell them what you're running and things like that and they will show you the way to go.
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Probably depends on who you ask. I have been looking at the 351 version same specs different firing order, and the answers have been somewhat conflicting. ON the comp cams website it says you need a higher than stock stall for this cam, and I would bet if you called them they would say you wouldn't need it, thats what they told me, one time. I would approach it like this, if you have the money to get a higher stall, why not go ahead and get it, it will improve your idle somewhat and off idle power, so its a win win. There is a company on ebay that has 2000-2500 stall converters or something to that effect, for $85 + $20 to ship, there are some people on this board that have used the converters and have had no problems with this company. Just a thought
here is the one I am referring too:
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2455312715
here is the one I am referring too:
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2455312715
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From: Atlanta, Georgia, USA
You should definately throw in a 2000 stall. If you don't you'll wish you had. Like JWT said, it makes a big difference in idle quality in gear, and it really helps the truck pull hard off the line. 2000 stall is also mild enough to not place any undue stress on your transmission, and will not shorten the life of any of your driveline components. In fact, many people who run that stall speed have actually gained fuel milage in city driving situation, especially those with high (numerically low) gears.
Get a B&M or TCI converter though. For the price they charge, it's not really worth playing around with stuff on ebay. It'll be the best $200 you've ever put under your hood. TK
Get a B&M or TCI converter though. For the price they charge, it's not really worth playing around with stuff on ebay. It'll be the best $200 you've ever put under your hood. TK
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Customcab
Summit has a "Jan/feb" special tci 2000 stall for the c6 $169.95, not bad, on the little higher than stock converters all the companies rework stock factory pieces, so your paying for the name and hoping they live up to it.
YOu may wanna look at the thread entitled "ratsmoker I have a question", it shows different cams ran against each other, the 262 will probably make a decent amount more low end torque up to 3500+/- than the 268 and the 268 picks up after that, how often you plan on running above 35-4000 rpm? You wouldn't need a higher stall with the 262, however, it would help out any combination, just a thought, let us know what you decide and how it works, later
Summit has a "Jan/feb" special tci 2000 stall for the c6 $169.95, not bad, on the little higher than stock converters all the companies rework stock factory pieces, so your paying for the name and hoping they live up to it.
YOu may wanna look at the thread entitled "ratsmoker I have a question", it shows different cams ran against each other, the 262 will probably make a decent amount more low end torque up to 3500+/- than the 268 and the 268 picks up after that, how often you plan on running above 35-4000 rpm? You wouldn't need a higher stall with the 262, however, it would help out any combination, just a thought, let us know what you decide and how it works, later
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From: Clarksville,Tn
Still leaning towards installing a stall convertor; Prior to asking this thread; I consulted Summit and your all right they told me a 268 cam doesn't need a Stall. This engine is still new just built two months ago and We're still working the bugs out of it, many local mechanic's and performance friends usaually state the same about a 268 cam, right now the engine has less than seven mile's on it; and I just got it to idle right, Been told of so many issues and reason for dieing once you place it into gear i.e reverse or drive. They range from distributor to carb.
If I'm not able to dial in the distributor etc; by next weekend I will be ordering the TCI 2000, Saturday Night Special from Summit Racing Part # 441600.
Thanks for the info and I'll keep you posted.........
(It's tough being a Shade Tree Mechanic with alot of Leaves Missing.)
Mitch
If I'm not able to dial in the distributor etc; by next weekend I will be ordering the TCI 2000, Saturday Night Special from Summit Racing Part # 441600.
Thanks for the info and I'll keep you posted.........
(It's tough being a Shade Tree Mechanic with alot of Leaves Missing.)
Mitch
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From: Clarksville,Tn
JW Taylor-
Just went to the ratsmoker thread you stated; I notice there's not much difference between a 268 cam and a 270 cam when it comes to specs. Now I can see why I might be having a hard time with running my motor in gear; 400 to 600 rpm's in the stall will make a big difference's in the performance. That's the basic differences between stock and a 2000 Stall...
Thanks for the research.
Mitch
Just went to the ratsmoker thread you stated; I notice there's not much difference between a 268 cam and a 270 cam when it comes to specs. Now I can see why I might be having a hard time with running my motor in gear; 400 to 600 rpm's in the stall will make a big difference's in the performance. That's the basic differences between stock and a 2000 Stall...
Thanks for the research.
Mitch
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Which cam do you have, and what is your rpms set at? Have you started over, as in, determined intial timing/timing marks to be correct, etc? No vacuum leaks? Later and good luck
Last edited by jwtaylor; Jan 26, 2004 at 12:18 PM.
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From: Clarksville,Tn
jwtaylor;
Hav'nt had the means yet to determine rpm's, havn't install a Tach or have the proper tool to check, will be installing a tach soon. Seems to produce a strong vaccum, also running pretty rich, Found out yesterday I could have too big of jets in carb or just need to adjust the ones I got. Don't have the carb specs here with me but will take them into consideration..
Thanks for reply.
Mitch
Hav'nt had the means yet to determine rpm's, havn't install a Tach or have the proper tool to check, will be installing a tach soon. Seems to produce a strong vaccum, also running pretty rich, Found out yesterday I could have too big of jets in carb or just need to adjust the ones I got. Don't have the carb specs here with me but will take them into consideration..
Thanks for reply.
Mitch
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