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My new bbc combo thoughts

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Old Oct 21, 2011 | 12:24 PM
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gtanut's Avatar
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My new bbc combo thoughts

454 block .060 over 4.310,3.76 stroke,6.535 rod, srp pistons approx 11.0 compression,brodix 294 cc rec race rite,custom grind cam adv duration int288 exh 297 duration @.050 int 256 exh 261 lift intake .721 exh .685 solid roller,super victor intake carb undecided any thoughts thanks
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Old Oct 21, 2011 | 02:53 PM
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Weird lift split.

No guts below 4500 RPMs. Hope you have good rod bolts.
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Old Oct 21, 2011 | 03:46 PM
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Re: My new bbc combo thoughts

Originally Posted by five7kid
Weird lift split.

No guts below 4500 RPMs. Hope you have good rod bolts.
arp 2000
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Old Oct 22, 2011 | 07:46 PM
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Car: A Portly 85 Z28
Engine: 4.530 X 4.250 BBC
Transmission: under rated for this application
Axle/Gears: also under rated
Re: My new bbc combo thoughts

so a long rod 427 with some bore, why not use the 4 inch arm for some more torque? 11 to 1 compression, I assume its gonna be a street beater and torque is king. Super victor is also gonna kill alot of torque, I would use a victor R, or the new wieand team g if using a single plane but lloking at your combo I`m thinking if it were me I`d be doing a dual plane intake...how much does the car weigh, what gear and what tire size, that would help paint the picture a bit more..application as well, street??
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Old Oct 23, 2011 | 06:33 PM
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Re: My new bbc combo thoughts

Originally Posted by greezemonkey
so a long rod 427 with some bore, why not use the 4 inch arm for some more torque? 11 to 1 compression, I assume its gonna be a street beater and torque is king. Super victor is also gonna kill alot of torque, I would use a victor R, or the new wieand team g if using a single plane but lloking at your combo I`m thinking if it were me I`d be doing a dual plane intake...how much does the car weigh, what gear and what tire size, that would help paint the picture a bit more..application as well, street??
it is just a car i take to the track 1-2 times a month nothing more it weights about 3500 with me in it 275/50/50 mt drag radial
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Old Oct 31, 2011 | 11:01 AM
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Re: My new bbc combo thoughts

430ci - short stroke w/ a very long rod, going to have an overly long dwell time, thus making it very octane & timing sensitive. The smaller heads & cam will help some in maintaining low-end torque.

I don't run over a 6.385 rod with under a 4" stroke, and we do a lot of short stroke combos.
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Old Nov 4, 2011 | 04:10 AM
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From: sahuarita az
Car: 1988 camaro 1991 lifted suburban
Engine: 350 and 454
Transmission: bw5 and a 700r4
Axle/Gears: 4:10
Re: My new bbc combo thoughts

i have a 1988 rs but i took out the v6 and put in a 454 bbc and a 4 core and that has 3 fans on it two 15's and a 12" and it still over heats i have changed out the thermostat to a 160degree from a 195 dagree and im running 97 octine and it still over heats only after 4 miles .... how can i get it to cool down to 200 i need some help on this .....
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Old Nov 4, 2011 | 07:57 AM
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Car: camaro sportcoupe
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Axle/Gears: Moser 9"
Re: My new bbc combo thoughts

^^is the air dam in place?

what's the combo look like? lots of compression? etc?
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Old Nov 4, 2011 | 12:30 PM
  #9  
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Re: My new bbc combo thoughts

Copper rad or alum? A 4-row copper won't do what a stock 2-row alum does.
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Old Nov 4, 2011 | 11:01 PM
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From: sahuarita az
Car: 1988 camaro 1991 lifted suburban
Engine: 350 and 454
Transmission: bw5 and a 700r4
Axle/Gears: 4:10
Re: My new bbc combo thoughts

copper rad and 4 core and the air dam is in place and its has lots of compression
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Old Nov 4, 2011 | 11:05 PM
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Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: My new bbc combo thoughts

go to aluminum rad, 4 core. aluminum dissipates heat better than copper
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Old Nov 7, 2011 | 08:53 AM
  #12  
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Re: My new bbc combo thoughts

My 15:1 motor could be left running on the jegs 2-row aluminum w/ a CSI electric wp & single 16" elec fan and never see over 180*.

As Matt noted, put a decent aluminum radiator in and go from there. Copper is considerably less efficient than aluminum; I had a four row copper that wouldn't keep up with my 11:1 street small block.
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Old Nov 7, 2011 | 02:07 PM
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From: sahuarita az
Car: 1988 camaro 1991 lifted suburban
Engine: 350 and 454
Transmission: bw5 and a 700r4
Axle/Gears: 4:10
Re: My new bbc combo thoughts

just did a 4 core aluminum with two 15" ad one 12" lewts see how it deals
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