SBF 185 Renegades

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SupStk
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SBF 185 Renegades

Post by SupStk »

Did a search here but didnt come up with anything except for a couple references to them. Just curious if anyone has the results from THEIR flowtests or any real world experience on 302-347 ci engines.
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Re: SBF 185 Renegades

Post by Old as Dirt »

Sorry, but just one of the references here(on a budget at that).. with quality machine work, the right cam(got my SFT from Jones) and good carb in the 650-750 CFM range.. along with a decent single plane manifold..
Expect to see 1.35+ ft/lbs. per CI of Torque output with 10.5-1 CR.. best I can do, as mine is in the build stage(347).. #1387 AFR 185 Renegade with CNC ported runners/chambers/5 angleVJ.. supposed to flow close to 300 CFM @ .600 lift.. looking at a nice tight squish of .036" and don't plan to spin it higher than 6500rpm.. JMHO, best of luck if you decide to go this way..

Theoretically, should produce close to 600HP, but wouldn't expect that unless you are going fully ported manifold/big compression ratio/big 850+ CFM carb/top of the line full solid roller setup with shaft rockers and spinning it 8500rpm.. sounds fun and expensive.. aftermarket block territory..
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Re: SBF 185 Renegades

Post by GARY C »

Here is a little write up on the 165 head on a 306 thats in line with what Old as Dirt said...The 185 should work good on a 347.
viewtopic.php?f=1&t=45826
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Re: SBF 185 Renegades

Post by SupStk »

thanks for the responses! Got a set of 1388s and flowed 'em. The numbers were so good on the two cylinders checked, I'm suspecting an issue with the bench. Yes the rocker hole was filled and spark plug installed! :D
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Re: SBF 185 Renegades

Post by hondo383 »

Did a 347, dart shp block, 236/240 .650 110 lsa hyd roller, 1387 heads, Harland sharp 1.6 rockers, 10.7 comp moroso pan, all out of the box stuff except the cam..made 534 hp at 6300 and like 490 tq iirc...it did have 4x2 bbl weber ida carbs so that a little better on tq than usual dual plane but very nice heads..I did not flow them.
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Re: SBF 185 Renegades

Post by Old as Dirt »

SupStk wrote:thanks for the responses! Got a set of 1388s and flowed 'em. The numbers were so good on the two cylinders checked, I'm suspecting an issue with the bench. Yes the rocker hole was filled and spark plug installed! :D
Sweet.. if you don't mind saying how much, how about it?
Close to the advertised 297@.600"?
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Re: SBF 185 Renegades

Post by SupStk »

At .600 they did 304.6 cfm. All my numbers are higher than AFR's posted data.
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Re: SBF 185 Renegades

Post by Old as Dirt »

Thanks Monty.. looking forward to my 347 in the little lake hotrod this summer..
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Re: SBF 185 Renegades

Post by SupStk »

Nice toy! A 347 and V-drive will make her scoot. Just curious are you using an aftermarket block?

This is what I'm building for.
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Re: SBF 185 Renegades

Post by bmcdaniel »

Put a set on a friend's 347 in his '66 fastback last year. CNC porting was nice, most of the rocker stud holes went through to the runners so be sure to put sealant on the stud threads. Oh, and check that the deck surfaces are flat.
If your car was blue instead of red you'd have identical twins!
Forgot to add, he had it on a chassis dyno but the tires kept going up in smoke so no good power/torque measurement...
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Re: SBF 185 Renegades

Post by Old as Dirt »

Nice Fastback.. not using an aftermarket block..
1969 302 block out of a Mustang(third one I had sonic checked/magged)..
Thinking if the tuneup is spot on, and kept below 6500rpm, she should live a decent life.. don't think she'll be loaded real hard, as the 16' hotrod weighs around 1400lbs.. should be a real lake hairdoo changer.. spending some dough on real good machine work(line hone and deck plates along with a real good balance) and will be running an AC Cobra 9 qt. pan along with a main girdle..
Casale gearbox is 1.08 ratio.. may have to swap out the gears to something a bit taller after seeing how things shake out with prop testing.. 8)
Boat is 1967 Vintage.. my Dad laid it up when I was 12..
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Re: SBF 185 Renegades

Post by SupStk »

OaD, your build is similar to what I'm thinking on. Going to do a small inch to begin with. Have all the parts rounded up, otherwise i'd consider a stroker. It will be a low buck deal since I have a race car to support. Some street manners and pump fuel is required.
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Re: SBF 185 Renegades

Post by Old as Dirt »

Fairly stout heads for a 289/302 build.. I'll have to check my copy of "Pipemax" and see what sort of Piston CFM demand a smaller CI build would like.. I know my 347 @ 6000rpm is around 256.3CFM @ 75 crank degrees.. and these heads will supply more than enough to meet that demand.. even with the manifold and carb bolted to them.. have an idea how much compression/cam details along with how high you plan to spin it that you are thinking about?
Up above 500HP, these factory blocks start showing main cap fretting and tend to crack right up through the middle.. I'll take my chances.. and not push it real hard..
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Re: SBF 185 Renegades

Post by SupStk »

The compression ratio will be 9.7 with 58cc chambers. I'd mill them but those heads, as they are, on a flat-top 331 would come in at 10.5.
The cam is solid FT, 248@.050 on 110 probably going to install at 104. With 1.7 intakes it will be .604 lift.
Have a China knock off of Terry Parkers funnel web. Gonna flow it on the heads and see what it does. Victor Jr. probably isn't up for consideration since they struggle to make 250 cfm.

If you could run it on pipemax I'm curious what insights it offers. Engine Jr. prediction was 497hp and right at your 1.35 tq per ci.
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Re: SBF 185 Renegades

Post by Old as Dirt »

I did, but ran it through as a 289.. as a 331 that will help with lowering the peak HP rpm, considering the piston demand required you to turn the 289 kinda hard in order to utilize the 2.024 CSA to get the right port velocity.. came up with 484 but that was turning it 7300 peak/10:1/with a 240-245 @ .050/.565" lift.. 108 LSA on a 106.. 1.7 rocker on the intake.. so I would say the numbers you came up with are reliable..
I have the same knock off Parker for my build.. the original ones were supposed to be good close to 300CFM.. the knock offs.. probably not as good.. i'll run it through for the 331 when I get a chance.. :mrgreen:
Some street manners and pump fuel is required
Sounds fairly snotty to me.. =D>
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