slrvette
09-14-2009, 11:59 AM
Trying to choose which distributor I need to work with the HSR.
Heres what I got
http://www.summitracing.com/parts/PNX-D100811/
http://www.summitracing.com/parts/PNX-D100810/
http://www.summitracing.com/parts/MAA-6648214/
http://www.summitracing.com/parts/MAA-6648214/
Am I going to need to purchase any of the bronze distributor gears with these?
Tom400CFI
09-14-2009, 12:30 PM
You won't need a bronze gear with the flat tappet cam.
As for the dist. I'm a cheap bastard, so I'd try to make a used F-bod TPI or truck TBI dist. work.
slrvette
09-14-2009, 01:01 PM
You won't need a bronze gear with the flat tappet cam.
As for the dist. I'm a cheap bastard, so I'd try to make a used F-bod TPI or truck TBI dist. work.
LOL.... I should have known thats the type of response I'd get from you.. :rofl: :rofl:
I may still look into that though. I didn't know a truck TBI would have the small cap distributor
Tom400CFI
09-14-2009, 01:37 PM
The '96 to '99 Vortec 350 uses the small dist too. :)
EDIT: Disregard. Won't work. It doesn't have a pick-up coil in the '96-'99. Only the TBI truck one would work.
slrvette
09-14-2009, 01:50 PM
The '96 to '99 Vortec 350 uses the small dist too. :)
EDIT: Disregard. Won't work. It doesn't have a pick-up coil in the '96-'99. Only the TBI truck one would work.
Do you happen to know what years I would be looking for?
vetteoz
09-14-2009, 02:21 PM
Do you happen to know what years I would be looking for?
Aren't the 87's - '95 trucks TBI , (pre Vortec in '96 )?
Also need the small cap to HEI conversion harness; $15 and a small cap coil plug with pigtail to hook the coil up.
http://www.eficonnection.com/eficonnection/tpi_pigtails.aspx
Tom400CFI
09-14-2009, 03:33 PM
Aren't the 87's - '95 trucks TBI , (pre Vortec in '96 )?
Yes. For a moment I had a brain fart and thought the '96-'99 used the standard small cap dist. But they don't. They use a "crossfire" cap and "cam" sensor (180*) so they WON'T work. Only the later F-body TPI and ALL TBI, '87-'95 truck, F-body or what ever will work.
vetteoz
09-14-2009, 04:15 PM
A note of interest :thumbsup:
"pop off the distributer cap and look at the ignition control module. If its a stock GM module, look at the numbers inscribed in it. You will either have 048 or 369. The 048 is a TERRIBLE module to have as it will pull a ton of timing over 3,500 rpm. The 369 will actually add a 2* of timing advance over 4,000. The 048 was like a built in rev-limiter, the 369 was used in performance applications and applications that needed upper rpm performance. TPI Camaros/Firebirds and TBI Fullsize Vans and 9C1 cop cars came with the 369 module. TBI Trucks and Civilian B-cars as well as TBI F-cars came with the 048 modules."
"The 048 module, held steady timing until about 3800 RPM where it retarded 4 degrees. Then by 5000 RPM the retard had increased to 6 degrees.
The 369 module, held steady timing until about 3200 where it gained 2 degrees of advance. This held steady to 5000 RPM, which is the highest RPM it was checked at".
http://i171.photobucket.com/albums/u309/vetteoz/048vs369.jpg
slrvette
09-14-2009, 05:04 PM
A note of interest :thumbsup:
"pop off the distributer cap and look at the ignition control module. If its a stock GM module, look at the numbers inscribed in it. You will either have 048 or 369. The 048 is a TERRIBLE module to have as it will pull a ton of timing over 3,500 rpm. The 369 will actually add a 2* of timing advance over 4,000. The 048 was like a built in rev-limiter, the 369 was used in performance applications and applications that needed upper rpm performance. TPI Camaros/Firebirds and TBI Fullsize Vans and 9C1 cop cars came with the 369 module. TBI Trucks and Civilian B-cars as well as TBI F-cars came with the 048 modules."
"The 048 module, held steady timing until about 3800 RPM where it retarded 4 degrees. Then by 5000 RPM the retard had increased to 6 degrees.
The 369 module, held steady timing until about 3200 where it gained 2 degrees of advance. This held steady to 5000 RPM, which is the highest RPM it was checked at".
http://i171.photobucket.com/albums/u309/vetteoz/048vs369.jpg
Thats a very cool post!...:cheers:
thanks
toobroketoretire
09-14-2009, 05:26 PM
The bronze gears are made to be used with steel billet roller cams. The cast steel roller cams don't need the bronze gears, but the steel billet roller cams do need them.
vetteoz
09-14-2009, 07:11 PM
Thats a very cool post!...:cheers: thanks
I did a little bit of research before my conversion:thumbsup: