 SBC 302 is in, running!, Needs some tuning, any suggestions? |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| marks914 |
 May 31 2007, 10:24 AM
Post
#1
|
|
Senior Member  Group: Members Posts: 845 Joined: 9-October 04 From: the motor city Member No.: 2,912 Region Association: None  |
Got the 305 out and put the 302 in, runs pretty well.
I am running an edelbrock 600, Hydraulic roller cam .56 lift 236/236 duration. I am in the process of tuning it right now. I have HEI vacuum advance hooked up to the timed port on the carb. The engine has some lope to it, when I advance the distributor to smooth out the idle, it purrs like a kitten and no spark knock. The problem is when I advance the ignition timing this far, it is difficult for the starter to turn over the engine. Here is what I am going to try, please tell me if this makes sense: I was going to put the vacuum advance on the manifold vacuum port, thus giving more advance at idle, I do not think this would affect the initial start up advance, making the starter able to turn the motor over when hot. here are some pics Thanks Mark PS, the car is a bit quicker now, the power comes on at 3000 RPMs, so it is very driveable around town with the power where it needs to be. Attached image(s) 
|
   |
 
|
  |
Replies
| dakotaewing |
Sep 9 2007, 11:30 AM
Post
#2
|
|
Senior Member Group: Members Posts: 1,163 Joined: 8-July 03 From: DeSoto, Tx Member No.: 897 Region Association: Southwest Region 
|
Mark -
What pistons are you running? Could you give a part # please ? I am using the TRW 2210's And what cc heads are you running? I just want to compare notes... I would hate to finish mine and end up with a dog because I was not running enough compression... Thanks - Thom |
|
|
|
| marks914 |
Sep 9 2007, 12:34 PM
Post
#3
|
|
Senior Member Group: Members Posts: 845 Joined: 9-October 04 From: the motor city Member No.: 2,912 Region Association: None |
QUOTE(dakotaewing @ Sep 9 2007, 09:30 AM)  Mark - What pistons are you running? Could you give a part # please ? I am using the TRW 2210's And what cc heads are you running? I just want to compare notes... I would hate to finish mine and end up with a dog because I was not running enough compression... Thanks - Thom Tom, Here are the specs: 1970 High nickel block .030 over SRP fored -6cc domed pistons 10.1:1 CR Edelbrock 60899 Performer heads 64cc Comp Cam custom grind hyd roller cam .560 lift 230/230 duration Comp cam roller lifters, springs, roller rockers 1178 crank Pink rods The pistons are here: http://store.summitracing.com/partdetail.a...mp;autoview=sku They are called out as 10.4:1but by the time the dome is radiused, it comes out to about 10.1:1 The heads are 64cc and cleaned up a bit: http://store.summitracing.com/partdetail.a...mp;autoview=sku Mark |
|
|
|
Posts in this topic
marks914 SBC 302 is in, running! May 31 2007, 10:24 AM
marks914 ... May 31 2007, 10:24 AM marks914 ... May 31 2007, 10:25 AM marks914 ... May 31 2007, 10:26 AM
jimkelly don't use that foam air filter - darn - that i... Sep 9 2007, 06:51 AM marks914 ... May 31 2007, 10:26 AM pffft
...
Is the distributor vac advace or retard?
Ma... May 31 2007, 12:26 PM herman maire That looks like a VERY nice and clean V8 swap :b... May 31 2007, 11:25 AM JB 914 looking good :)
post up the tuning results. i... May 31 2007, 11:49 AM tyler Looks great. where did you get the valve covers? May 31 2007, 11:59 AM race914 Your project is looking awesome!
The Porsche ... May 31 2007, 12:35 PM 914-8 Nice!
Be careful with that air filter. Most ... May 31 2007, 12:40 PM rick 918-S
Nice!
Be careful with that air filter. Most... May 31 2007, 12:55 PM greybeard50 Ballpark answer to your question...SBC's like ... May 31 2007, 12:59 PM messix it's ok to run the vac advance to the manifold... May 31 2007, 01:10 PM andys As greybeard50 mentions, and perhaps a bit more in... May 31 2007, 01:17 PM messix what heads are you running? iron or aluminum? late... May 31 2007, 02:07 PM marks914 Thanks for the input,
The Dizzy is a summit bluepr... May 31 2007, 02:45 PM messix
Thanks for the input,
The Dizzy is a summit bluep... May 31 2007, 03:07 PM Dr. Roger Hey Mark,
I had the same thing going on with mine... May 31 2007, 07:52 PM messix BTW, the vacuum advance goes on a spark port. If y... May 31 2007, 08:45 PM marks914 Hooked up the vacuum gauge and I have 7hg" at... May 31 2007, 09:26 PM byndbad914 Hey Mike - I am going to just kinda reinforce a co... May 31 2007, 11:11 PM marks914 Its runnimg better.
I changed to lighter step up s... Jun 2 2007, 05:17 AM JPB Them valve covers are sick Okay, I want a SBC now... Jun 2 2007, 08:11 PM marks914 Got it idling decent finally.
I got an accel adv... Jun 6 2007, 06:08 AM messix
Got it idling decent finally.
I got an accel ad... Jun 6 2007, 11:58 AM Dr. Roger Hey fantastic! Congratulations. Those 302... Jun 6 2007, 01:58 PM messix it's another way to lean or richen the set up ... Jun 6 2007, 07:19 PM marks914 Its definately running lean. I drove it to work t... Jun 6 2007, 08:17 PM messix
Its definately running lean. I drove it to work ... Jun 6 2007, 11:21 PM LarryR Sweet! I am now inspired to continue my projec... Jun 6 2007, 11:13 PM marks914 Well I have had it running pretty well for about 1... Sep 9 2007, 04:17 AM marks914 The foam air cleaner has been on my car for 5 yera... Sep 9 2007, 10:48 AM dakotaewing Thanks Mark -
My heads are rated at -18cc Dome, so... Sep 9 2007, 01:14 PM |
23 User(s) are reading this topic (23 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 22nd November 2024 - 09:57 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.