cam for 186 double humps
08-12-2003, 11:54 PM
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cam for 186 double humps
sorry my other post got to long and off topic
since I know the heads will work, got a question
186 double humps angle milled .100
2.04in 1.60ex
lunati 1.6 RR's
edel performor rpm intake
edel 750 carb
hooker shorties
dual 3'' exhaust through single chamber flows
full MSD ignition
stock LO5 roller version (flatops) with about 2500 or so miles
3.73 posi
th350 tranny
aluminum drive shaft
all the extra supension goodies
just ordered the comp XR288HR cam........
did I order the right cam for the setup???????.....
only driven on fri and sat nights...dont care about low end take off
just assume not burn out and gain my speed on mid to upper
since I know the heads will work, got a question
186 double humps angle milled .100
2.04in 1.60ex
lunati 1.6 RR's
edel performor rpm intake
edel 750 carb
hooker shorties
dual 3'' exhaust through single chamber flows
full MSD ignition
stock LO5 roller version (flatops) with about 2500 or so miles
3.73 posi
th350 tranny
aluminum drive shaft
all the extra supension goodies
just ordered the comp XR288HR cam........
did I order the right cam for the setup???????.....
only driven on fri and sat nights...dont care about low end take off
just assume not burn out and gain my speed on mid to upper
Last edited by 25thanniversZ; 08-13-2003 at 05:59 PM.
08-13-2003, 12:31 AM
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Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Sounds good but.......I don't know how you could get 2"1/16th & 1"13/16th valves in a 186 head. After market heads only accept 2.050 & 1.650 or 2.08 & 1.60.
08-13-2003, 06:04 PM
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by the way I called and canceled the comp XR288HR and went with the XR282HR.......gives me a .544in .555ex max lift with the 1.6 rr's.........sound a little betters fellas???
please the anticipation is killing me
08-13-2003, 10:06 PM
#6
my brother is running the 282HR in his 383 with only 2.73 rear gears. He does have a 2800 rpm stall though. He has a good deal of low end power with that cam but he has a few more cubes and 200cc intake runners in his Iron eagle heads. You did say you had a 350 right.
Anyway the 288HR does seam a little much. I would stick with the decision to go with the 282HR if it was me.
Anyway the 288HR does seam a little much. I would stick with the decision to go with the 282HR if it was me.
08-13-2003, 10:11 PM
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I run a tranny shop for my pops, so i'll worry about the stall when the heads go on tommarrow, but i'll probably go with a 3000 stall
yes 350....cam should be in in the morning
yes 350....cam should be in in the morning
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08-13-2003, 10:37 PM
#8
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Did you ever CC the heads?
Higher the CR, more duration needed to tame the engine...i/e 12:1cR w/ a 202@.o50 cam will go through starters like crazy, but once started..will ping like a **** as well.
CC the heads before you buy anything. Match CR to the cam. We'll assume the heads will flow it for now.
My uneducated guess is .1 milled 186's on your motor, regardless of cam...willl bring you back in a week or two with the topic...
"Just installed new heads and cam...motor doesn't feel like it should"
Higher the CR, more duration needed to tame the engine...i/e 12:1cR w/ a 202@.o50 cam will go through starters like crazy, but once started..will ping like a **** as well.
CC the heads before you buy anything. Match CR to the cam. We'll assume the heads will flow it for now.
My uneducated guess is .1 milled 186's on your motor, regardless of cam...willl bring you back in a week or two with the topic...
"Just installed new heads and cam...motor doesn't feel like it should"
08-13-2003, 10:47 PM
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the heads just came off a 383 with dome pistons, he ran it with 93 oct mixed with 112 oct
and before they were on a 350 30 over, it pinged a little with 93 oct and as if the heads will flow he doesnt have junk work done on his engines......takes his racing seriously...drag racing...and as for my situation I more than likely will be running either avgas or 112 mixed with pump...and have plenty of starters sitting around
and before they were on a 350 30 over, it pinged a little with 93 oct and as if the heads will flow he doesnt have junk work done on his engines......takes his racing seriously...drag racing...and as for my situation I more than likely will be running either avgas or 112 mixed with pump...and have plenty of starters sitting around
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