87 vs late 86
Thread Starter
Instructor
Joined: Feb 2010
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From: Schnecksville PA
87 vs late 86
.. gota a couple questions
need to know if the cam is the same as far as profile ( know the 87 is a roller)
is the chip in the 87 the same as the 86.... or do i need the 87 chip if i use the roller cam
here is the situation
bought the car was an 86 late model...motor was shot..
found a n 87 short block roller cam.. need to know if i can run the roller cam setup (stock) with my 86 computer... and 86 chip?
if not.. ill get the 87 chip.. but if it the same then im set..
also.. just for my reference anyone know the cam specs on the 86 and the specs on the 87
need to know if the cam is the same as far as profile ( know the 87 is a roller)
is the chip in the 87 the same as the 86.... or do i need the 87 chip if i use the roller cam
here is the situation
bought the car was an 86 late model...motor was shot..
found a n 87 short block roller cam.. need to know if i can run the roller cam setup (stock) with my 86 computer... and 86 chip?
if not.. ill get the 87 chip.. but if it the same then im set..
also.. just for my reference anyone know the cam specs on the 86 and the specs on the 87
Le Mans Master
Joined: Aug 2000
Posts: 8,838
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From: Australia
Thread Starter
Instructor
Joined: Feb 2010
Posts: 205
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From: Schnecksville PA
ok... how about spring pressures?... are they the same?
i would doubt this but if they are... im set to runn the roller.. if not.. all i need is a set of springs..
and if you would know( seams u have alot of info so share).. push rod length?
any info on that?
not that i want answers quick..but the machine shop man wants to knwo what i wana do... (dont wana keep him waiting.. busy man) so if you could get back to me asap that would be sweet
i would doubt this but if they are... im set to runn the roller.. if not.. all i need is a set of springs..
and if you would know( seams u have alot of info so share).. push rod length?
any info on that?
not that i want answers quick..but the machine shop man wants to knwo what i wana do... (dont wana keep him waiting.. busy man) so if you could get back to me asap that would be sweet
Thread Starter
Instructor
Joined: Feb 2010
Posts: 205
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From: Schnecksville PA
so your saying i cant use the pushrods i have.. (no problem)
im not using stock rockers... i have aftermarket full roller rockers i want to use.. still 1.5 but would rather use them? is that ok?
ur saying the spring pressure is the same for the roller and non roller setups? i find it hard to beleive that.. but if your saying thats the case.. anyone conferm? i allways though roller had to be stronger to hold the roller lifter onto the cam...
im not using stock rockers... i have aftermarket full roller rockers i want to use.. still 1.5 but would rather use them? is that ok?
ur saying the spring pressure is the same for the roller and non roller setups? i find it hard to beleive that.. but if your saying thats the case.. anyone conferm? i allways though roller had to be stronger to hold the roller lifter onto the cam...
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Spring pressure is more related to cam lift which in your case is the same on both
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Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Thread Starter
Instructor
Joined: Feb 2010
Posts: 205
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From: Schnecksville PA
while were talking about this..
anyone have a spart 86/ 87 auto chip laying around?
only ask casue i dont know whats in mine.. yet to pull it.. and would like to have one incase anything was mess'ed with..(since mine is gonna be bone stock ... minus egr, smog crap,
anyone have a spart 86/ 87 auto chip laying around?
only ask casue i dont know whats in mine.. yet to pull it.. and would like to have one incase anything was mess'ed with..(since mine is gonna be bone stock ... minus egr, smog crap,
Race Director
Joined: Sep 2003
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From: Database Error Indiana
Thread Starter
Instructor
Joined: Feb 2010
Posts: 205
Likes: 0
From: Schnecksville PA
only think i think it might hit is the oil breathers.. unless anyone can chime in here and tell me if i need to worrie about that ?
Race Director
Joined: Sep 2003
Posts: 16,835
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From: Database Error Indiana
well i think they will work.. i gotta test fit.. i allready cut the oil dripp things for the stock rockers off.. ( knew this from my dads 82 vette that he did that too.. with the full rollers..)..
only think i think it might hit is the oil breathers.. unless anyone can chime in here and tell me if i need to worrie about that ?
only think i think it might hit is the oil breathers.. unless anyone can chime in here and tell me if i need to worrie about that ?
You can squeeze those with Chanel Locks for clearance, if you have to.
Thread Starter
Instructor
Joined: Feb 2010
Posts: 205
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From: Schnecksville PA
Anyone know if tge factory cams were billit cams ?? Also anyone know what the cam numbers were on the can itself??? I bought a 87 roller vette motor just wana make sure the cam is right ... The lobs were .415 and .405 ( prolly dirt ... ) please let me know asap if anyone knows... Thx.
Thread Starter
Instructor
Joined: Feb 2010
Posts: 205
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From: Schnecksville PA
anyone?
is it 643-cpc-bc 3
?? thats what is one my cam well actually it goes liek this (the - are actually dots on the cam)
643-CPC-BC-3----643-CPC-BC-
just like that .. there are no other markings on the cam.. eccept for a random C on the one part.. but other then that.. its a billit cam.. and all..
need insite quick
thx
brian
is it 643-cpc-bc 3
?? thats what is one my cam well actually it goes liek this (the - are actually dots on the cam)
643-CPC-BC-3----643-CPC-BC-
just like that .. there are no other markings on the cam.. eccept for a random C on the one part.. but other then that.. its a billit cam.. and all..
need insite quick
thx
brian
