CHESTNUTXE 7,260 Posted November 22, 2019 i have time ,so i wanna buy a porting kit or something like that and match port the heads and maybe a bit more. 1 NZXD reacted to this Share this post Link to post Share on other sites
NZXD 2,328 Posted November 22, 2019 From the factory they have 155cc intake and flow a tad under 200cfm at .500 lift through a small 1.85 intake valve. Which isn’t too bad really for a little factory Windsor considering a stock 2V Cleveland head flows the same. Sent from my iPhone using Tapatalk 2 CHESTNUTXE and gerg reacted to this Share this post Link to post Share on other sites
gerg 10,871 Posted November 22, 2019 From the factory they have 155cc intake and flow a tad under 200cfm at .500 lift through a small 1.85 intake valve. Which isn’t too bad really for a little factory Windsor considering a stock 2V Cleveland head flows the same. Sent from my iPhone using Tapatalk200 is definitely none too shabby, earlier Windsors I think were in the 150s, 351Ws maybe high 170s, 4V Clevos were up around 260. 2Vs aren't as good as you think, I believe Aussie castings were in the low 180s. US ones around 200. I think our casting methods and bowl work left much to be desired on our 2Vs. I reckon mine being very mildly ported puts them up around the 200 mark (of course not tested).I can see why GT40Ps were sought after in the day. Sort of like how Vortech heads are to Chev guys... Cheap, factory made upgrades.Sent from my CPH1903 using Tapatalk 2 NZXD and CHESTNUTXE reacted to this Share this post Link to post Share on other sites
CHESTNUTXE 7,260 Posted November 22, 2019 just looking at boss 302 alloy heads agghhhhh,,, 1 NZXD reacted to this Share this post Link to post Share on other sites
NZXD 2,328 Posted November 22, 2019 Just reading about the 302 boss from 1969/70, rated at 290hp at 5200, great advertising by ford to try and pull the wool over the eyes of the muscle car haters and insurance companies back in the day, that motor could spin to 8000. Sent from my iPhone using Tapatalk 1 gerg reacted to this Share this post Link to post Share on other sites
gerg 10,871 Posted November 22, 2019 Just reading about the 302 boss from 1969/70, rated at 290hp at 5200, great advertising by ford to try and pull the wool over the eyes of the muscle car haters and insurance companies back in the day, that motor could spin to 8000. Sent from my iPhone using TapatalkI think the street-going engines were tamed with a rather mild camshaft (to retain a stock-like valvetrain) something like 228 @ 0.050" and around 0.500" lift on a solid cam, and with a very wide 114 LSA (probably for smog). But yes I have seen figures of 370 HP in street trim (at over 6000 rpm) so Ford was still grossly underrating this engine.Still, at that rpm, the heads are just starting to work properly yet the cam would be strangling them. The race engines were good for over 500 HP at around 7500, so obviously had a cam with better lift and overlap to take advantage of the breathing. They would be a dog on the street though.Sent from my CPH1903 using Tapatalk 1 CHESTNUTXE reacted to this Share this post Link to post Share on other sites
CHESTNUTXE 7,260 Posted November 22, 2019 i was looking at what is involved to modify a set of 2v closed chamber heads,block off the water jacket and mill where needed at intake side for coolant,late model alloy heads have the best of both worlds can make a clevor easy but pricey,can imagine the 2v would be good on the street,but you need a special piston to suit canted valves and factory motors used 289 rods,but TRW does a mock boss piston to suit the std 302 rod as most mock motors would be doing this as 289 rods are not as easy to find,then the cam not sure if it would be clevo or winsor firing order,but a nice hyd roller and bolt on roller rockers would be fine for a street car,it has been done before but all that work just to have a boss 302 ? probly just as easy to chux in a 331 stroker kit and same hp it is. 1 gerg reacted to this Share this post Link to post Share on other sites
bear351c 10,260 Posted November 23, 2019 Plus Stroker = Torque monster 1 CHESTNUTXE reacted to this Share this post Link to post Share on other sites
CHESTNUTXE 7,260 Posted November 23, 2019 i bet there is hardly anyone on this site that has actually seen a boss 302 in the flesh,very rare in aus,gerg also knows about the tunnel port 302 1 gerg reacted to this Share this post Link to post Share on other sites
NZXD 2,328 Posted November 23, 2019 i bet there is hardly anyone on this site that has actually seen a boss 302 in the flesh,very rare in aus,gerg also knows about the tunnel port 302 I know of a made up boss using 2V Cleveland and 302w bottom end in an XY. Runs a toploader and a 9 inch, made 290hp at the wheels at 5500rpm. For the money you would spend on setting up Cleveland heads you could put some Trickflow 11r Windsor heads on the 302w for probably less money and have more power. Sent from my iPhone using Tapatalk 1 CHESTNUTXE reacted to this Share this post Link to post Share on other sites
CHESTNUTXE 7,260 Posted November 23, 2019 but just for the wow factor building a mock boss would be cool,also can run clevo extractors Share this post Link to post Share on other sites
bear351c 10,260 Posted November 23, 2019 Not that special nowadays...... 4 bolt mains, screw in welsh plugs, 7/16" rocker bolts etc. Can all be done in a machine shop, but, obviously without the bragging rights. Would be nice to own one, and sit it in the corner of the shed, and stare at it. 2 CHESTNUTXE and NZXD reacted to this Share this post Link to post Share on other sites
CHESTNUTXE 7,260 Posted November 23, 2019 Not that special nowadays...... 4 bolt mains, screw in welsh plugs, 7/16" rocker bolts etc. Can all be done in a machine shop, but, obviously without the bragging rights. Would be nice to own one, and sit it in the corner of the shed, and stare at it. Done some more cleaning i find these lifter holders interesting Sent from my SM-G570Y using Tapatalk Share this post Link to post Share on other sites
gerg 10,871 Posted November 23, 2019 i bet there is hardly anyone on this site that has actually seen a boss 302 in the flesh,very rare in aus,gerg also knows about the tunnel port 302 Might have seen a Boss mustang at a car show or something, but otherwise just read shitloads about them. The Boss block is really nothing more than a tunnel port ie: high nickel, forged crank, hipo rods with 3/8 bolts, thicker deck, etcSent from my CPH1903 using Tapatalk 1 CHESTNUTXE reacted to this Share this post Link to post Share on other sites
Thom 6,639 Posted November 23, 2019 302 Windsors post 86 have the same firing order as clevo, boss 302 uses clevo firing order as does 351 Windsor 2 CHESTNUTXE and gerg reacted to this Share this post Link to post Share on other sites
CHESTNUTXE 7,260 Posted November 23, 2019 there is a add on e bay atm for mock but good boss 302 parts with MEXICAN BLOCK of high nickel Share this post Link to post Share on other sites
CHESTNUTXE 7,260 Posted November 23, 2019 last night i was trolling thru you tube and found a video on this rare boss 302 engine and assorted full factory race parts,very interesting video with so many nos parts in boxes ,like the CROSS BOSS intake,plus 8 autolite carby trumpet stacks. 2 gerg and NZXD reacted to this Share this post Link to post Share on other sites
NZXD 2,328 Posted November 24, 2019 I’ve seen some really cool builds on the net for the little Windsor, one liked the most was:Dart block 4.125 boreSteel 302 size crankAlloy Cleveland style heads etcBig roller camComes out at around 330ciMade just under 800hp on engine dyno. Wasn’t street friendly. Anyone know the bore and stroke and in a Ford 5.0 V8 supercar? I’m thinking the biggest bore possible around 4.185 and a stroke of 2.8 inch or similar???Sent from my iPhone using Tapatalk 2 CHESTNUTXE and gerg reacted to this Share this post Link to post Share on other sites
CHESTNUTXE 7,260 Posted November 24, 2019 i can imagine that engine sings to 8000 odd,i have caught smallblock fever this month,so many builds and mustangs out there on you tube,its like going shopping at a massive supermarket where you dont have to worry will it fit a cleveland,im still trying to find a 1v set up for my pulleys,seems only the early smallblocks had the 3 bolt balancer. Share this post Link to post Share on other sites
NZXD 2,328 Posted November 24, 2019 You can get four bolt pulleys, I have a set. The issue is that there’s different depth water pumps and balancers, is getting them to line up is a pain. You can get spaces though. That’s why I run a gilmour belt. If I could ever build another Windsor it would be pretty much what I described above. Sent from my iPhone using Tapatalk 1 CHESTNUTXE reacted to this Share this post Link to post Share on other sites
FORD_MAN 1,026 Posted November 24, 2019 There is a local factory Boss 302 is a street/circuit car has drag raced it a few times, Have thought a few times of getting my bros spare 5.0lt, basic reco with 230°ish cam, some Aeroflow alloy heads or AFD alloys, air gap or victor jr & maybe some nitrous... another idea was Aussie Speed Boss 302 hi rise to suit 2V Cleveland heads, & SRP BOSS 302 piston to suit Aussie 2v heads (302C closed chamber) 3.5cc dome, As for porting I brought a Makita 240V 1/4" die grinder (GD0600) & a long shank burr, heaps nicer then waiting on the compressor to try & keep up with my bluepoint die grinder. 2 NZXD and CHESTNUTXE reacted to this Share this post Link to post Share on other sites
CHESTNUTXE 7,260 Posted November 24, 2019 lucky there is a video on porting and cleaning up gt40p iron heads,shows a strange bump in the exhaust roof used for emissions in usa ,it can be cleaned up . Share this post Link to post Share on other sites
NZXD 2,328 Posted November 24, 2019 Cleaning up the exhaust side is where you get good gains on these heads. Sent from my iPhone using Tapatalk 1 CHESTNUTXE reacted to this Share this post Link to post Share on other sites
CHESTNUTXE 7,260 Posted November 24, 2019 Cleaning up the exhaust side is where you get good gains on these heads. Sent from my iPhone using TapatalkPlus some intake match porting should give them some flow over the std e7Sent from my SM-G570Y using Tapatalk Share this post Link to post Share on other sites
CHESTNUTXE 7,260 Posted November 24, 2019 Plus some intake match porting should give them some flow over the std e7Sent from my SM-G570Y using TapatalkThese are the pipes that came off the au ltd they seem factory and bigger than the eb onesSent from my SM-G570Y using Tapatalk Share this post Link to post Share on other sites